(window.webpackJsonp=window.webpackJsonp||[]).push([[503],{1065:function(s,t,a){"use strict";a.r(t);var n=a(68),e=Object(n.a)({},(function(){var s=this,t=s.$createElement,a=s._self._c||t;return a("ContentSlotsDistributor",{attrs:{"slot-key":s.$parent.slotKey}},[a("h1",{attrs:{id:"编程-tsfile-api"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#编程-tsfile-api"}},[s._v("#")]),s._v(" 编程-TsFile API")]),s._v(" "),a("p",[s._v("TsFile是我们在IoTDB中使用的时间序列的文件格式。 在本节中，我们要介绍这种文件格式的用法。")]),s._v(" "),a("h2",{attrs:{id:"ts文件库安装"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#ts文件库安装"}},[s._v("#")]),s._v(" Ts文件库安装")]),s._v(" "),a("p",[s._v("在您自己的项目中有两种使用TsFile的方法。")]),s._v(" "),a("ul",[a("li",[a("p",[s._v("用作jars：")]),s._v(" "),a("ul",[a("li",[a("p",[s._v("编译源代码并构建为jars")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("git clone https://github.com/apache/incubator-iotdb.git\ncd tsfile/\nmvn clean package -Dmaven.test.skip=true\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br")])]),a("p",[s._v("然后，所有的jar都可以放在名为“ target /”的文件夹中。 将"),a("code",[s._v("target / tsfile-0.9.3-jar-with-dependencies.jar")]),s._v("导入您的项目。")])])])]),s._v(" "),a("li",[a("p",[s._v("用作Maven依赖项：")]),s._v(" "),a("p",[s._v("编译源代码并通过三个步骤将其部署到本地存储库：")]),s._v(" "),a("ul",[a("li",[a("p",[s._v("获取源代码")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("git clone https://github.com/apache/incubator-iotdb.git\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])])]),s._v(" "),a("li",[a("p",[s._v("编译源代码并部署")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("cd tsfile/\nmvn clean install -Dmaven.test.skip=true\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])])]),s._v(" "),a("li",[a("p",[s._v("在项目中添加依赖项：")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v(" <dependency>\n   <groupId>org.apache.iotdb</groupId>\n   <artifactId>tsfile</artifactId>\n   <version>0.9.3</version>\n </dependency>\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br"),a("span",{staticClass:"line-number"},[s._v("4")]),a("br"),a("span",{staticClass:"line-number"},[s._v("5")]),a("br")])])])]),s._v(" "),a("p",[s._v("或者，您可以从官方Maven存储库下载依赖项：")]),s._v(" "),a("ul",[a("li",[a("p",[s._v("第一, 在路径上找到您的Maven"),a("code",[s._v("settings.xml")]),s._v(": "),a("code",[s._v("${username}\\.m2\\settings.xml")]),s._v("\n, 将 "),a("code",[s._v("<profile>")]),s._v(" 加入到 "),a("code",[s._v("<profiles>")]),s._v(":")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("  <profile>\n       <id>allow-snapshots</id>\n          <activation><activeByDefault>true</activeByDefault></activation>\n       <repositories>\n         <repository>  \n            <id>apache.snapshots</id>\n            <name>Apache Development Snapshot Repository</name>\n            <url>https://repository.apache.org/content/repositories/snapshots/</url>\n            <releases>\n                <enabled>false</enabled>\n            </releases>\n            <snapshots>\n                <enabled>true</enabled>\n            </snapshots>\n          </repository>\n       </repositories>\n     </profile>\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br"),a("span",{staticClass:"line-number"},[s._v("4")]),a("br"),a("span",{staticClass:"line-number"},[s._v("5")]),a("br"),a("span",{staticClass:"line-number"},[s._v("6")]),a("br"),a("span",{staticClass:"line-number"},[s._v("7")]),a("br"),a("span",{staticClass:"line-number"},[s._v("8")]),a("br"),a("span",{staticClass:"line-number"},[s._v("9")]),a("br"),a("span",{staticClass:"line-number"},[s._v("10")]),a("br"),a("span",{staticClass:"line-number"},[s._v("11")]),a("br"),a("span",{staticClass:"line-number"},[s._v("12")]),a("br"),a("span",{staticClass:"line-number"},[s._v("13")]),a("br"),a("span",{staticClass:"line-number"},[s._v("14")]),a("br"),a("span",{staticClass:"line-number"},[s._v("15")]),a("br"),a("span",{staticClass:"line-number"},[s._v("16")]),a("br"),a("span",{staticClass:"line-number"},[s._v("17")]),a("br")])])]),s._v(" "),a("li",[a("p",[s._v("然后将依赖项添加到您的项目中：")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v(" <dependency>\n   <groupId>org.apache.iotdb</groupId>\n   <artifactId>tsfile</artifactId>\n   <version>0.9.3</version>\n </dependency>\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br"),a("span",{staticClass:"line-number"},[s._v("4")]),a("br"),a("span",{staticClass:"line-number"},[s._v("5")]),a("br")])])])])])]),s._v(" "),a("h2",{attrs:{id:"tsfile的用法"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#tsfile的用法"}},[s._v("#")]),s._v(" TSFile的用法")]),s._v(" "),a("p",[s._v("本节演示TsFile的详细用法。")]),s._v(" "),a("h3",{attrs:{id:"时间序列数据"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#时间序列数据"}},[s._v("#")]),s._v(" 时间序列数据")]),s._v(" "),a("p",[s._v("时间序列被视为四倍序列。 四元组定义为（设备，测量，时间，值）。")]),s._v(" "),a("ul",[a("li",[a("p",[a("strong",[s._v("测量")]),s._v(": 时间序列进行的物理或形式测量，例如城市温度，某些商品的销售数量或火车在不同时间的速度。 由于传统的传感器（例如温度计）也需要进行一次测量并生成一个时间序列，因此我们将在下面互换使用测量和传感器。")])]),s._v(" "),a("li",[a("p",[a("strong",[s._v("设备")]),s._v(": 设备是指正在执行多个测量（产生多个时间序列）的实体，例如，运行中的火车监视其速度，油表，行驶里程，当前乘客均被传送到一个时间序列。")])])]),s._v(" "),a("p",[s._v("表1说明了一组时间序列数据。 下表中显示的集合包含一个名为“ device \\ _1”的设备以及三个名为“ sensor \\ _1”，“ sensor \\ _2”和“ sensor \\ _3”的测量值。")]),s._v(" "),a("table",{staticStyle:{"text-align":"center"}},[a("tr",[a("th",{attrs:{colspan:"6"}},[s._v("device_1")])]),s._v(" "),a("tr",[a("th",{attrs:{colspan:"2"}},[s._v("sensor_1")]),a("th",{attrs:{colspan:"2"}},[s._v("sensor_2")]),a("th",{attrs:{colspan:"2"}},[s._v("sensor_3")])]),s._v(" "),a("tr",[a("th",[s._v("time")]),a("th",[s._v("value")]),a("th",[s._v("time")]),a("th",[s._v("value")]),a("th",[s._v("time")]),a("th",[s._v("value")])]),s._v(" "),a("tr",[a("td",[s._v("1")]),a("td",[s._v("1.2")]),a("td",[s._v("1")]),a("td",[s._v("20")]),a("td",[s._v("2")]),a("td",[s._v("50")])]),s._v(" "),a("tr",[a("td",[s._v("3")]),a("td",[s._v("1.4")]),a("td",[s._v("2")]),a("td",[s._v("20")]),a("td",[s._v("4")]),a("td",[s._v("51")])]),s._v(" "),a("tr",[a("td",[s._v("5")]),a("td",[s._v("1.1")]),a("td",[s._v("3")]),a("td",[s._v("21")]),a("td",[s._v("6")]),a("td",[s._v("52")])]),s._v(" "),a("tr",[a("td",[s._v("7")]),a("td",[s._v("1.8")]),a("td",[s._v("4")]),a("td",[s._v("20")]),a("td",[s._v("8")]),a("td",[s._v("53")])])]),s._v(" "),a("span",[s._v("一组时间序列数据")]),s._v(" "),a("p",[a("strong",[s._v("一行数据")]),s._v(":在许多工业应用中，设备通常包含多个传感器，并且这些传感器可能在同一时间戳上具有值，这称为一行数据。")]),s._v(" "),a("p",[s._v("形式上，一行数据由一个"),a("code",[s._v("device_id")]),s._v("，一个指示自1970年1月1日以来的毫秒数，00：00：00组成的时间戳，以及由"),a("code",[s._v("measurement_id")]),s._v("和对应的"),a("code",[s._v("value")]),s._v("组成的几对数据组成。 一行中的所有数据对都属于该"),a("code",[s._v("device_id")]),s._v("，并且具有相同的时间戳。 如果其中一个"),a("code",[s._v("measurements")]),s._v(" 在"),a("code",[s._v("timestamp")]),s._v("中没有"),a("code",[s._v("value")]),s._v(" ，请改用空格（实际上，TsFile不存储空值）。 其格式如下所示：")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("device_id, timestamp, <measurement_id, value>...\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[s._v("一个示例如下所示。 在此示例中，两个测量的数据类型分别为“ INT32”和“ FLOAT”。")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("device_1, 1490860659000, m1, 10, m2, 12.12\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("h3",{attrs:{id:"编写tsfile"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#编写tsfile"}},[s._v("#")]),s._v(" 编写TsFile")]),s._v(" "),a("h4",{attrs:{id:"生成一个tsfile文件"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#生成一个tsfile文件"}},[s._v("#")]),s._v(" 生成一个TsFile文件")]),s._v(" "),a("p",[s._v("可以通过以下三个步骤来生成TsFile，完整的代码将在“编写TsFile的示例”部分中给出。")]),s._v(" "),a("ul",[a("li",[a("p",[s._v("一，构造一个"),a("code",[s._v("TsFileWriter")]),s._v("实例。")]),s._v(" "),a("p",[s._v("以下是可用的构造函数：")]),s._v(" "),a("ul",[a("li",[s._v("没有预定义的架构")])]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("public TsFileWriter(File file) throws IOException\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("ul",[a("li",[s._v("使用预定义的架构")])]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("public TsFileWriter(File file, Schema schema) throws IOException\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[s._v("这是用于使用HDFS文件系统的。  "),a("code",[s._v("TsFileOutput")]),s._v("可以是"),a("code",[s._v("HDFSOutput")]),s._v("类的实例。")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("public TsFileWriter(TsFileOutput output, Schema schema) throws IOException \n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[s._v("如果您想自己设置一些TSFile配置，则可以使用param"),a("code",[s._v("config")]),s._v("。 例如：")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v('TSFileConfig conf = new TSFileConfig();\nconf.setTSFileStorageFs("HDFS");\nTsFileWriter tsFileWriter = new TsFileWriter(file, schema, conf);\n')])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br")])]),a("p",[s._v("在此示例中，数据文件将存储在HDFS中，而不是本地文件系统中。 如果要将数据文件存储在本地文件系统中，则可以使用"),a("code",[s._v("conf.setTSFileStorageFs（“ LOCAL”）")]),s._v("，这也是默认配置。")]),s._v(" "),a("p",[s._v("您也可以通过"),a("code",[s._v("config.setHdfsIp（...）")]),s._v("和"),a("code",[s._v("config.setHdfsPort（...）")]),s._v("配置HDFS的IP和端口。 默认ip为"),a("code",[s._v("localhost")]),s._v("，默认端口为"),a("code",[s._v("9000")]),s._v("。")]),s._v(" "),a("p",[a("strong",[s._v("Parameters:")])]),s._v(" "),a("ul",[a("li",[a("p",[s._v("file：要写入的TsFile")])]),s._v(" "),a("li",[a("p",[s._v("schema：文件模式将在下一部分中介绍。")])]),s._v(" "),a("li",[a("p",[s._v("config：TsFile的配置。")])])])]),s._v(" "),a("li",[a("p",[s._v("二，添加测量")]),s._v(" "),a("p",[s._v("或者，您可以先创建"),a("code",[s._v("Schema")]),s._v("类的实例，然后将其传递给"),a("code",[s._v("TsFileWriter")]),s._v("类的构造函数。"),a("code",[s._v("Schema")]),s._v("类包含一个映射，该映射的键是一个度量模式的名称，而值是该模式本身。")]),s._v(" "),a("p",[s._v("这里是接口：")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("// 创建一个空的架构或从现有的映射\npublic Schema()\npublic Schema(Map<String, MeasurementSchema> measurements)\n// Use this two interfaces to add measurements\npublic void registerMeasurement(MeasurementSchema descriptor)\npublic void registerMeasurements(Map<String, MeasurementSchema> measurements)\n// 一些有用的吸气剂和检查剂\npublic TSDataType getMeasurementDataType(String measurementId)\npublic MeasurementSchema getMeasurementSchema(String measurementId)\npublic Map<String, MeasurementSchema> getAllMeasurementSchema()\npublic boolean hasMeasurement(String measurementId)\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br"),a("span",{staticClass:"line-number"},[s._v("4")]),a("br"),a("span",{staticClass:"line-number"},[s._v("5")]),a("br"),a("span",{staticClass:"line-number"},[s._v("6")]),a("br"),a("span",{staticClass:"line-number"},[s._v("7")]),a("br"),a("span",{staticClass:"line-number"},[s._v("8")]),a("br"),a("span",{staticClass:"line-number"},[s._v("9")]),a("br"),a("span",{staticClass:"line-number"},[s._v("10")]),a("br"),a("span",{staticClass:"line-number"},[s._v("11")]),a("br")])]),a("p",[s._v("您始终可以在"),a("code",[s._v("TsFileWriter")]),s._v("类中使用以下接口来添加其他度量：")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("public void addMeasurement(MeasurementSchema measurementSchema) throws WriteProcessException\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[a("code",[s._v("MeasurementSchema")]),s._v("类包含一种度量的信息，有几种构造函数：")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("public MeasurementSchema(String measurementId, TSDataType type, TSEncoding encoding)\npublic MeasurementSchema(String measurementId, TSDataType type, TSEncoding encoding, CompressionType compressionType)\npublic MeasurementSchema(String measurementId, TSDataType type, TSEncoding encoding, CompressionType compressionType, \nMap<String, String> props)\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br"),a("span",{staticClass:"line-number"},[s._v("4")]),a("br")])]),a("p",[a("strong",[s._v("参数：")]),s._v("\n​")]),s._v(" "),a("ul",[a("li",[a("p",[s._v("measurementID：此测量的名称，通常是传感器的名称。")])]),s._v(" "),a("li",[a("p",[s._v("类型：数据类型，现在支持六种类型："),a("code",[s._v("BOOLEAN")]),s._v("，"),a("code",[s._v("INT32")]),s._v("，"),a("code",[s._v("INT64")]),s._v("，"),a("code",[s._v("FLOAT")]),s._v("，"),a("code",[s._v("DOUBLE")]),s._v("，"),a("code",[s._v("TEXT")]),s._v("。")])]),s._v(" "),a("li",[a("p",[s._v("encoding：数据编码。 见 "),a("RouterLink",{attrs:{to:"/document/V0.9.x/UserGuide/2-Concept/3-Encoding.html"}},[s._v("Chapter 2-3")]),s._v(".")],1)]),s._v(" "),a("li",[a("p",[s._v("compression：数据压缩。 现在支持"),a("code",[s._v("UNCOMPRESSED")]),s._v("和"),a("code",[s._v("SNAPPY")]),s._v("。")])]),s._v(" "),a("li",[a("p",[s._v("props：特殊数据类型的属性，例如"),a("code",[s._v("FLOAT")]),s._v("和"),a("code",[s._v("DOUBLE")]),s._v("的"),a("code",[s._v("max_point_number")]),s._v("，"),a("code",[s._v("TEXT")]),s._v("的"),a("code",[s._v("max_string_length")]),s._v("。 用作字符串对，例如（“ max_point_number”，“ 3”）。")])])]),s._v(" "),a("blockquote",[a("p",[s._v("**注意：**尽管一个度量名称可以在多个deltaObject中使用，但是不能更改属性。 即      不允许多次使用不同的类型或编码添加一个测量名称。\n​     这是一个不好的例子：")])]),s._v(" "),a("div",{staticClass:"language- extra-class"},[a("pre",[a("code",[s._v('  // 测量值“ sensor_1”为浮点型\n  addMeasurement(new MeasurementSchema("sensor_1", TSDataType.FLOAT, TSEncoding.RLE));\n  \n  // 此调用将引发WriteProcessException异常\n  addMeasurement(new MeasurementSchema("sensor_1", TSDataType.INT32, TSEncoding.RLE));\n')])])])]),s._v(" "),a("li",[a("p",[s._v("第三，连续插入和写入数据。\n​    使用此接口可以创建新的"),a("code",[s._v("TSRecord")]),s._v("（时间戳和设备对）。")])]),s._v(" "),a("li",[a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("  public TSRecord(long timestamp, String deviceId)\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[s._v("然后创建一个"),a("code",[s._v("DataPoint")]),s._v("（一个测量值和一个值对），并使用addTuple方法将DataPoint添加到正确的TsRecord。\n​    用这种方法写")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("public void write(TSRecord record) throws IOException, WriteProcessException\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])])]),s._v(" "),a("li",[a("p",[s._v("最后，调用"),a("code",[s._v("close")]),s._v("完成此编写过程。")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("public void close() throws IOException\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])])])]),s._v(" "),a("h4",{attrs:{id:"编写tsfile的示例"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#编写tsfile的示例"}},[s._v("#")]),s._v(" 编写TsFile的示例")]),s._v(" "),a("p",[s._v("您应该将TsFile安装到本地Maven存储库。")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("mvn clean install -pl tsfile -am -DskipTests\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[s._v("如果您具有"),a("strong",[s._v("未对齐")]),s._v("（例如，并非所有传感器都包含值）的时间序列数据，则可以通过构造**TSRecord **来编写TsFile。")]),s._v(" "),a("p",[s._v("可以在以下位置找到更详尽的示例"),a("code",[s._v("/example/tsfile/src/main/java/org/apache/iotdb/tsfile/TsFileWriteWithTSRecord.java")])]),s._v(" "),a("div",{staticClass:"language-java line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-java"}},[a("code",[a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("package")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("java"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("io"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("File")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("file"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("metadata"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("enums"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("file"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("metadata"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("enums"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("write"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("write"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("record"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSRecord")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("write"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("record"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("datapoint"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("DataPoint")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("write"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("record"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("datapoint"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("FloatDataPoint")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("write"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("record"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("datapoint"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IntDataPoint")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("write"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("schema"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("/**\n * An example of writing data to TsFile\n * It uses the interface:\n * public void addMeasurement(MeasurementSchema MeasurementSchema) throws WriteProcessException\n */")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("class")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriteWithTSRecord")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n\n  "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("static")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("main")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" args"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("try")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" path "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"test.tsfile"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("File")]),s._v(" f "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("File")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("path"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("if")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("f"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("exists")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n        f"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("delete")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),s._v(" tsFileWriter "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("f"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// add measurements into file schema")]),s._v("\n      tsFileWriter\n          "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("addMeasurement")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_1"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("INT64"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("RLE"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      tsFileWriter\n          "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("addMeasurement")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_2"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("INT64"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("RLE"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      tsFileWriter\n          "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("addMeasurement")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_3"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("INT64"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("RLE"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n            \n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// construct TSRecord")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSRecord")]),s._v(" tsRecord "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSRecord")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"device_1"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("DataPoint")]),s._v(" dPoint1 "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("LongDataPoint")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_1"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("DataPoint")]),s._v(" dPoint2 "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("LongDataPoint")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_2"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("2")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("DataPoint")]),s._v(" dPoint3 "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("LongDataPoint")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_3"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("3")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      tsRecord"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("addTuple")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("dPoint1"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      tsRecord"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("addTuple")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("dPoint2"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      tsRecord"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("addTuple")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("dPoint3"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n            \n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// write TSRecord")]),s._v("\n      tsFileWriter"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("write")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("tsRecord"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      \n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// close TsFile")]),s._v("\n      tsFileWriter"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("close")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("catch")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Throwable")]),s._v(" e"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n      e"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("printStackTrace")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("System")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("out"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("println")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("e"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("getMessage")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n  "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br"),a("span",{staticClass:"line-number"},[s._v("4")]),a("br"),a("span",{staticClass:"line-number"},[s._v("5")]),a("br"),a("span",{staticClass:"line-number"},[s._v("6")]),a("br"),a("span",{staticClass:"line-number"},[s._v("7")]),a("br"),a("span",{staticClass:"line-number"},[s._v("8")]),a("br"),a("span",{staticClass:"line-number"},[s._v("9")]),a("br"),a("span",{staticClass:"line-number"},[s._v("10")]),a("br"),a("span",{staticClass:"line-number"},[s._v("11")]),a("br"),a("span",{staticClass:"line-number"},[s._v("12")]),a("br"),a("span",{staticClass:"line-number"},[s._v("13")]),a("br"),a("span",{staticClass:"line-number"},[s._v("14")]),a("br"),a("span",{staticClass:"line-number"},[s._v("15")]),a("br"),a("span",{staticClass:"line-number"},[s._v("16")]),a("br"),a("span",{staticClass:"line-number"},[s._v("17")]),a("br"),a("span",{staticClass:"line-number"},[s._v("18")]),a("br"),a("span",{staticClass:"line-number"},[s._v("19")]),a("br"),a("span",{staticClass:"line-number"},[s._v("20")]),a("br"),a("span",{staticClass:"line-number"},[s._v("21")]),a("br"),a("span",{staticClass:"line-number"},[s._v("22")]),a("br"),a("span",{staticClass:"line-number"},[s._v("23")]),a("br"),a("span",{staticClass:"line-number"},[s._v("24")]),a("br"),a("span",{staticClass:"line-number"},[s._v("25")]),a("br"),a("span",{staticClass:"line-number"},[s._v("26")]),a("br"),a("span",{staticClass:"line-number"},[s._v("27")]),a("br"),a("span",{staticClass:"line-number"},[s._v("28")]),a("br"),a("span",{staticClass:"line-number"},[s._v("29")]),a("br"),a("span",{staticClass:"line-number"},[s._v("30")]),a("br"),a("span",{staticClass:"line-number"},[s._v("31")]),a("br"),a("span",{staticClass:"line-number"},[s._v("32")]),a("br"),a("span",{staticClass:"line-number"},[s._v("33")]),a("br"),a("span",{staticClass:"line-number"},[s._v("34")]),a("br"),a("span",{staticClass:"line-number"},[s._v("35")]),a("br"),a("span",{staticClass:"line-number"},[s._v("36")]),a("br"),a("span",{staticClass:"line-number"},[s._v("37")]),a("br"),a("span",{staticClass:"line-number"},[s._v("38")]),a("br"),a("span",{staticClass:"line-number"},[s._v("39")]),a("br"),a("span",{staticClass:"line-number"},[s._v("40")]),a("br"),a("span",{staticClass:"line-number"},[s._v("41")]),a("br"),a("span",{staticClass:"line-number"},[s._v("42")]),a("br"),a("span",{staticClass:"line-number"},[s._v("43")]),a("br"),a("span",{staticClass:"line-number"},[s._v("44")]),a("br"),a("span",{staticClass:"line-number"},[s._v("45")]),a("br"),a("span",{staticClass:"line-number"},[s._v("46")]),a("br"),a("span",{staticClass:"line-number"},[s._v("47")]),a("br"),a("span",{staticClass:"line-number"},[s._v("48")]),a("br"),a("span",{staticClass:"line-number"},[s._v("49")]),a("br"),a("span",{staticClass:"line-number"},[s._v("50")]),a("br"),a("span",{staticClass:"line-number"},[s._v("51")]),a("br"),a("span",{staticClass:"line-number"},[s._v("52")]),a("br"),a("span",{staticClass:"line-number"},[s._v("53")]),a("br"),a("span",{staticClass:"line-number"},[s._v("54")]),a("br"),a("span",{staticClass:"line-number"},[s._v("55")]),a("br"),a("span",{staticClass:"line-number"},[s._v("56")]),a("br")])]),a("p",[s._v("如果您具有"),a("strong",[s._v("对齐的")]),s._v("时间序列数据，则可以通过构造**RowBatch **来编写TsFile。\n​    可以在"),a("code",[s._v("/example/tsfile/src/main/java/org/apache/iotdb/tsfile/TsFileWriteWithRowBatch.java")]),s._v("中找到更详尽的示例。")]),s._v(" "),a("div",{staticClass:"language-java line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-java"}},[a("code",[a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("package")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("java"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("io"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("File")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("file"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("metadata"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("enums"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("file"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("metadata"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("enums"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("write"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("write"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("schema"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Schema")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("write"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("schema"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("write"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("record"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("RowBatch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("/**\n * An example of writing data with RowBatch to TsFile\n */")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("class")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriteWithRowBatch")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n\n  "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("static")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("main")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),s._v(" args"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("try")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" path "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"test.tsfile"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("File")]),s._v(" f "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("File")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("path"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("if")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("f"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("exists")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n        f"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("delete")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Schema")]),s._v(" schema "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Schema")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// the number of rows to include in the row batch")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("int")]),s._v(" rowNum "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1000000")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// the number of values to include in the row batch")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("int")]),s._v(" sensorNum "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("10")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// add measurements into file schema (all with INT64 data type)")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("for")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("int")]),s._v(" i "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("0")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" i "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("<")]),s._v(" sensorNum"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" i"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("++")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n        schema"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("registerMeasurement")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("\n                "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_"')]),s._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("+")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("i "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("+")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("INT64"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("TS_2DIFF"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n\n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// add measurements into TSFileWriter")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),s._v(" tsFileWriter "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("f"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" schema"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// construct the row batch")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("RowBatch")]),s._v(" rowBatch "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" schema"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("createRowBatch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"device_1"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("long")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),s._v(" timestamps "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" rowBatch"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("timestamps"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Object")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),s._v(" values "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" rowBatch"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("values"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("long")]),s._v(" timestamp "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("long")]),s._v(" value "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1000000L")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("for")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("int")]),s._v(" r "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("0")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" r "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("<")]),s._v(" rowNum"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" r"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("++")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" value"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("++")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n        "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("int")]),s._v(" row "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" rowBatch"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("batchSize"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("++")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n        timestamps"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),s._v("row"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" timestamp"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("++")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n        "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("for")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("int")]),s._v(" i "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("0")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" i "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("<")]),s._v(" sensorNum"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" i"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("++")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n          "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("long")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),s._v(" sensor "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("long")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" values"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),s._v("i"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n          sensor"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),s._v("row"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" value"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n        "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n        "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// write RowBatch to TsFile")]),s._v("\n        "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("if")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("rowBatch"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("batchSize "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("==")]),s._v(" rowBatch"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("getMaxBatchSize")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n          tsFileWriter"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("write")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("rowBatch"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n          rowBatch"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("reset")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n        "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// write RowBatch to TsFile")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("if")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("rowBatch"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("batchSize "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("!=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("0")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n        tsFileWriter"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("write")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("rowBatch"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n        rowBatch"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("reset")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n\n      "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// close TsFile")]),s._v("\n      tsFileWriter"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("close")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("catch")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Throwable")]),s._v(" e"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n      e"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("printStackTrace")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("System")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("out"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("println")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("e"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("getMessage")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n  "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br"),a("span",{staticClass:"line-number"},[s._v("4")]),a("br"),a("span",{staticClass:"line-number"},[s._v("5")]),a("br"),a("span",{staticClass:"line-number"},[s._v("6")]),a("br"),a("span",{staticClass:"line-number"},[s._v("7")]),a("br"),a("span",{staticClass:"line-number"},[s._v("8")]),a("br"),a("span",{staticClass:"line-number"},[s._v("9")]),a("br"),a("span",{staticClass:"line-number"},[s._v("10")]),a("br"),a("span",{staticClass:"line-number"},[s._v("11")]),a("br"),a("span",{staticClass:"line-number"},[s._v("12")]),a("br"),a("span",{staticClass:"line-number"},[s._v("13")]),a("br"),a("span",{staticClass:"line-number"},[s._v("14")]),a("br"),a("span",{staticClass:"line-number"},[s._v("15")]),a("br"),a("span",{staticClass:"line-number"},[s._v("16")]),a("br"),a("span",{staticClass:"line-number"},[s._v("17")]),a("br"),a("span",{staticClass:"line-number"},[s._v("18")]),a("br"),a("span",{staticClass:"line-number"},[s._v("19")]),a("br"),a("span",{staticClass:"line-number"},[s._v("20")]),a("br"),a("span",{staticClass:"line-number"},[s._v("21")]),a("br"),a("span",{staticClass:"line-number"},[s._v("22")]),a("br"),a("span",{staticClass:"line-number"},[s._v("23")]),a("br"),a("span",{staticClass:"line-number"},[s._v("24")]),a("br"),a("span",{staticClass:"line-number"},[s._v("25")]),a("br"),a("span",{staticClass:"line-number"},[s._v("26")]),a("br"),a("span",{staticClass:"line-number"},[s._v("27")]),a("br"),a("span",{staticClass:"line-number"},[s._v("28")]),a("br"),a("span",{staticClass:"line-number"},[s._v("29")]),a("br"),a("span",{staticClass:"line-number"},[s._v("30")]),a("br"),a("span",{staticClass:"line-number"},[s._v("31")]),a("br"),a("span",{staticClass:"line-number"},[s._v("32")]),a("br"),a("span",{staticClass:"line-number"},[s._v("33")]),a("br"),a("span",{staticClass:"line-number"},[s._v("34")]),a("br"),a("span",{staticClass:"line-number"},[s._v("35")]),a("br"),a("span",{staticClass:"line-number"},[s._v("36")]),a("br"),a("span",{staticClass:"line-number"},[s._v("37")]),a("br"),a("span",{staticClass:"line-number"},[s._v("38")]),a("br"),a("span",{staticClass:"line-number"},[s._v("39")]),a("br"),a("span",{staticClass:"line-number"},[s._v("40")]),a("br"),a("span",{staticClass:"line-number"},[s._v("41")]),a("br"),a("span",{staticClass:"line-number"},[s._v("42")]),a("br"),a("span",{staticClass:"line-number"},[s._v("43")]),a("br"),a("span",{staticClass:"line-number"},[s._v("44")]),a("br"),a("span",{staticClass:"line-number"},[s._v("45")]),a("br"),a("span",{staticClass:"line-number"},[s._v("46")]),a("br"),a("span",{staticClass:"line-number"},[s._v("47")]),a("br"),a("span",{staticClass:"line-number"},[s._v("48")]),a("br"),a("span",{staticClass:"line-number"},[s._v("49")]),a("br"),a("span",{staticClass:"line-number"},[s._v("50")]),a("br"),a("span",{staticClass:"line-number"},[s._v("51")]),a("br"),a("span",{staticClass:"line-number"},[s._v("52")]),a("br"),a("span",{staticClass:"line-number"},[s._v("53")]),a("br"),a("span",{staticClass:"line-number"},[s._v("54")]),a("br"),a("span",{staticClass:"line-number"},[s._v("55")]),a("br"),a("span",{staticClass:"line-number"},[s._v("56")]),a("br"),a("span",{staticClass:"line-number"},[s._v("57")]),a("br"),a("span",{staticClass:"line-number"},[s._v("58")]),a("br"),a("span",{staticClass:"line-number"},[s._v("59")]),a("br"),a("span",{staticClass:"line-number"},[s._v("60")]),a("br"),a("span",{staticClass:"line-number"},[s._v("61")]),a("br"),a("span",{staticClass:"line-number"},[s._v("62")]),a("br"),a("span",{staticClass:"line-number"},[s._v("63")]),a("br"),a("span",{staticClass:"line-number"},[s._v("64")]),a("br"),a("span",{staticClass:"line-number"},[s._v("65")]),a("br"),a("span",{staticClass:"line-number"},[s._v("66")]),a("br"),a("span",{staticClass:"line-number"},[s._v("67")]),a("br"),a("span",{staticClass:"line-number"},[s._v("68")]),a("br"),a("span",{staticClass:"line-number"},[s._v("69")]),a("br"),a("span",{staticClass:"line-number"},[s._v("70")]),a("br"),a("span",{staticClass:"line-number"},[s._v("71")]),a("br"),a("span",{staticClass:"line-number"},[s._v("72")]),a("br"),a("span",{staticClass:"line-number"},[s._v("73")]),a("br"),a("span",{staticClass:"line-number"},[s._v("74")]),a("br"),a("span",{staticClass:"line-number"},[s._v("75")]),a("br")])]),a("h3",{attrs:{id:"读取tsfile的接口"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#读取tsfile的接口"}},[s._v("#")]),s._v(" 读取TsFile的接口")]),s._v(" "),a("h4",{attrs:{id:"开始之前"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#开始之前"}},[s._v("#")]),s._v(" 开始之前")]),s._v(" "),a("p",[s._v("“时间序列数据”部分中的时间序列数据集在此用于本节的具体介绍。 下表中显示的集合包含一个名为“ device \\ _1”的deltaObject和三个名为“ sensor \\ _1”，“ sensor \\ _2”和“ sensor \\ _3”的测量值。 并简化了测量以进行简单说明，每个仅包含4个时间值对。")]),s._v(" "),a("table",{staticStyle:{"text-align":"center"}},[a("tr",[a("th",{attrs:{colspan:"6"}},[s._v("device_1")])]),s._v(" "),a("tr",[a("th",{attrs:{colspan:"2"}},[s._v("sensor_1")]),a("th",{attrs:{colspan:"2"}},[s._v("sensor_2")]),a("th",{attrs:{colspan:"2"}},[s._v("sensor_3")])]),s._v(" "),a("tr",[a("th",[s._v("time")]),a("th",[s._v("value")]),a("th",[s._v("time")]),a("th",[s._v("value")]),a("th",[s._v("time")]),a("th",[s._v("value")])]),s._v(" "),a("tr",[a("td",[s._v("1")]),a("td",[s._v("1.2")]),a("td",[s._v("1")]),a("td",[s._v("20")]),a("td",[s._v("2")]),a("td",[s._v("50")])]),s._v(" "),a("tr",[a("td",[s._v("3")]),a("td",[s._v("1.4")]),a("td",[s._v("2")]),a("td",[s._v("20")]),a("td",[s._v("4")]),a("td",[s._v("51")])]),s._v(" "),a("tr",[a("td",[s._v("5")]),a("td",[s._v("1.1")]),a("td",[s._v("3")]),a("td",[s._v("21")]),a("td",[s._v("6")]),a("td",[s._v("52")])]),s._v(" "),a("tr",[a("td",[s._v("7")]),a("td",[s._v("1.8")]),a("td",[s._v("4")]),a("td",[s._v("20")]),a("td",[s._v("8")]),a("td",[s._v("53")])])]),s._v(" "),a("span",[s._v("一组时间序列数据")]),s._v(" "),a("h4",{attrs:{id:"路径定义"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#路径定义"}},[s._v("#")]),s._v(" 路径定义")]),s._v(" "),a("p",[s._v("路径是用点分隔的字符串，该字符串在TsFile中唯一标识时间序列，例如“ root.area_1.device_1.sensor_1”。\n最后一部分“ sensor_1”称为“ measurementId”，其余部分“ root.area_1.device_1”称为deviceId。\n如上所述，不同设备中的相同测量具有相同的数据类型和编码，并且设备也是唯一的。")]),s._v(" "),a("p",[s._v("在读取接口中，参数路径指示要选择的测量。\n通过类"),a("code",[s._v("Path")]),s._v("可以轻松构造"),a("code",[s._v("Path实")]),s._v("例。 例如：")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v('Path p = new Path("device_1.sensor_1");\n')])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[s._v("我们将传递路径的ArrayList进行最终查询，以支持多个路径。")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v('List<Path> paths = new ArrayList<Path>();\npaths.add(new Path("device_1.sensor_1"));\npaths.add(new Path("device_1.sensor_3"));\n')])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br")])]),a("blockquote",[a("p",[s._v("**注意：**在构造路径时，参数的格式应为点分隔的字符串，最后一部分将被识别为MeasurementId，而其余部分将被识别为deviceId。")])]),s._v(" "),a("h4",{attrs:{id:"过滤器的定义"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#过滤器的定义"}},[s._v("#")]),s._v(" 过滤器的定义")]),s._v(" "),a("h5",{attrs:{id:"使用场景"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#使用场景"}},[s._v("#")]),s._v(" 使用场景")]),s._v(" "),a("p",[s._v("在TsFile读取过程中使用筛选器来选择满足一个或多个给定条件的数据。")]),s._v(" "),a("h4",{attrs:{id:"iexpression"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#iexpression"}},[s._v("#")]),s._v(" IExpression")]),s._v(" "),a("p",[a("code",[s._v("IExpression")]),s._v("是一个过滤器表达式接口，它将被传递给我们的最终查询调用。\n我们创建一个或多个过滤器表达式，并可以使用二进制过滤器运算符将它们链接到最终表达式。")]),s._v(" "),a("ul",[a("li",[a("p",[a("strong",[s._v("创建一个过滤器表达式")])]),s._v(" "),a("p",[s._v("有两种类型的过滤器。")]),s._v(" "),a("ul",[a("li",[a("p",[s._v("TimeFilter：时间序列数据中"),a("code",[s._v("时间")]),s._v("的过滤器。")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("IExpression timeFilterExpr = new GlobalTimeExpression(TimeFilter);\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[s._v("使用以下关系获取"),a("code",[s._v("TimeFilter")]),s._v("对象（值是一个long int变量）。\n"),a("center",[a("table",{staticStyle:{"text-align":"center"}},[a("tr",[a("th",[s._v("Relationship")]),a("th",[s._v("Description")])]),s._v(" "),a("tr",[a("td",[s._v("TimeFilter.eq(value)")]),a("td",[s._v("Choose the time equal to the value")])]),s._v(" "),a("tr",[a("td",[s._v("TimeFilter.lt(value)")]),a("td",[s._v("Choose the time less than the value")])]),s._v(" "),a("tr",[a("td",[s._v("TimeFilter.gt(value)")]),a("td",[s._v("Choose the time greater than the value")])]),s._v(" "),a("tr",[a("td",[s._v("TimeFilter.ltEq(value)")]),a("td",[s._v("Choose the time less than or equal to the value")])]),s._v(" "),a("tr",[a("td",[s._v("TimeFilter.gtEq(value)")]),a("td",[s._v("Choose the time greater than or equal to the value")])]),s._v(" "),a("tr",[a("td",[s._v("TimeFilter.notEq(value)")]),a("td",[s._v("Choose the time not equal to the value")])]),s._v(" "),a("tr",[a("td",[s._v("TimeFilter.not(TimeFilter)")]),a("td",[s._v("Choose the time not satisfy another TimeFilter")])])])])],1)]),s._v(" "),a("li",[a("p",[s._v("ValueFilter：时间序列数据中值的过滤器。")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("IExpression valueFilterExpr = new SingleSeriesExpression(Path, ValueFilter);\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[a("code",[s._v("ValueFilter")]),s._v("的用法与"),a("code",[s._v("TimeFilter")]),s._v("的用法相同，只是要确保值的类型等于度量值（在路径中定义）。")])])])]),s._v(" "),a("li",[a("p",[a("strong",[s._v("二元滤波器运算符")])]),s._v(" "),a("p",[s._v("二进制过滤器运算符可用于链接两个单个表达式。")]),s._v(" "),a("ul",[a("li",[s._v("BinaryExpression.and（Expression，Expression）：选择两个表达式都满足的值。")]),s._v(" "),a("li",[s._v("BinaryExpression.or（Expression，Expression）：选择至少满足一个表达式的值。")])])])]),s._v(" "),a("h5",{attrs:{id:"过滤器表达式示例"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#过滤器表达式示例"}},[s._v("#")]),s._v(" 过滤器表达式示例")]),s._v(" "),a("ul",[a("li",[a("p",[a("strong",[s._v("TimeFilterExpression示例")])]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("IExpression timeFilterExpr = new GlobalTimeExpression(TimeFilter.eq(15)); // series time = 15\n\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("IExpression timeFilterExpr = new GlobalTimeExpression(TimeFilter.ltEq(15)); // series time <= 15\n\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("IExpression timeFilterExpr = new GlobalTimeExpression(TimeFilter.lt(15)); // series time < 15\n\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("IExpression timeFilterExpr = new GlobalTimeExpression(TimeFilter.gtEq(15)); // series time >= 15\n\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("IExpression timeFilterExpr = new GlobalTimeExpression(TimeFilter.notEq(15)); // series time != 15\n\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("IExpression timeFilterExpr = BinaryExpression.and(new GlobalTimeExpression(TimeFilter.gtEq(15L)),\n                                         new GlobalTimeExpression(TimeFilter.lt(25L))); // 15 <= series time < 25\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("IExpression timeFilterExpr = BinaryExpression.or(new GlobalTimeExpression(TimeFilter.gtEq(15L)),\n                                         new GlobalTimeExpression(TimeFilter.lt(25L))); // series time >= 15 or series time < 25\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])])])]),s._v(" "),a("h4",{attrs:{id:"读取界面"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#读取界面"}},[s._v("#")]),s._v(" 读取界面")]),s._v(" "),a("p",[s._v("首先，我们打开TsFile并从文件路径字符串"),a("code",[s._v("path")]),s._v("获取一个"),a("code",[s._v("ReadOnlyTsFile")]),s._v("实例。")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("TsFileSequenceReader reader = new TsFileSequenceReader(path);\n   \nReadOnlyTsFile readTsFile = new ReadOnlyTsFile(reader);\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br")])]),a("p",[s._v("接下来，我们准备路径数组和查询表达式，然后通过此接口获取最终的"),a("code",[s._v("QueryExpression")]),s._v("对象：")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("QueryExpression queryExpression = QueryExpression.create(paths, statement);\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[s._v("ReadOnlyTsFile类具有两种查询方法来执行查询。")]),s._v(" "),a("ul",[a("li",[a("p",[a("strong",[s._v("方法1")])]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("public QueryDataSet query(QueryExpression queryExpression) throws IOException\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])])]),s._v(" "),a("li",[a("p",[a("strong",[s._v("方法二")])]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("public QueryDataSet query(QueryExpression queryExpression, long partitionStartOffset, long partitionEndOffset) throws IOException\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br")])]),a("p",[s._v("此方法设计用于高级应用程序，例如TsFile-Spark连接器。")]),s._v(" "),a("ul",[a("li",[a("p",[a("strong",[s._v("参数")]),s._v(" : 对于方法2，添加了两个附加参数以支持部分查询：")]),s._v(" "),a("ul",[a("li",[a("code",[s._v("partitionStartOffset")]),s._v(": TsFile的起始偏移量")]),s._v(" "),a("li",[a("code",[s._v("partitionEndOffset")]),s._v(": TsFile的结束偏移量")])]),s._v(" "),a("blockquote",[a("p",[a("strong",[s._v("什么是部分查询？")])]),s._v(" "),a("p",[s._v("在某些分布式文件系统（例如HDFS）中，文件被分成几个部分，这些部分称为“块”，并存储在不同的节点中。 在涉及的每个节点中并行执行查询可以提高效率。 因此，需要部分查询。  Paritial Query只选择存储在零件中的结果，该零件由TsFile的"),a("code",[s._v("QueryConstant.PARTITION_START_OFFSET")]),s._v("和"),a("code",[s._v("QueryConstant.PARTITION_END_OFFSET")]),s._v("分开。")])])])])])]),s._v(" "),a("h3",{attrs:{id:"querydataset接口"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#querydataset接口"}},[s._v("#")]),s._v(" QueryDataset接口")]),s._v(" "),a("p",[s._v("上面执行的查询将返回一个"),a("code",[s._v("QueryDataset")]),s._v("对象。")]),s._v(" "),a("p",[s._v("这是对用户有用的界面。")]),s._v(" "),a("ul",[a("li",[a("p",[a("code",[s._v("bool hasNext();")])]),s._v(" "),a("p",[s._v("如果此数据集仍包含元素，则返回true。")])]),s._v(" "),a("li",[a("p",[a("code",[s._v("List<Path> getPaths()")])]),s._v(" "),a("p",[s._v("获取此数据集中的路径。")])]),s._v(" "),a("li",[a("p",[a("code",[s._v("List<TSDataType> getDataTypes();")])]),s._v(" "),a("p",[s._v("获取数据类型。  TSDataType类是一个枚举类，值将是以下值之一：")]),s._v(" "),a("div",{staticClass:"language- extra-class"},[a("pre",[a("code",[s._v(" BOOLEAN,\n INT32,\n INT64,\n FLOAT,\n DOUBLE,\n TEXT;\n")])])])]),s._v(" "),a("li",[a("p",[a("code",[s._v("RowRecord next() throws IOException;")])]),s._v(" "),a("p",[s._v("获取下一条记录。")]),s._v(" "),a("p",[a("code",[s._v("RowRecord")]),s._v("类由一个很长的时间戳和一个"),a("code",[s._v("List <Field>")]),s._v("组成，用于不同传感器中的数据，我们可以使用两种getter方法来获取它们。")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("long getTimestamp();\nList<Field> getFields();\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])]),a("p",[s._v("要从一个字段获取数据，请使用以下方法：")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("TSDataType getDataType();\nObject getObjectValue();\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])])])]),s._v(" "),a("h4",{attrs:{id:"读取现有tsfile的示例"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#读取现有tsfile的示例"}},[s._v("#")]),s._v(" 读取现有TsFile的示例")]),s._v(" "),a("p",[s._v("您应该将TsFile安装到本地Maven存储库。")]),s._v(" "),a("p",[s._v("有关查询语句的更详尽示例，请参见：\n"),a("code",[s._v("/tsfile/example/src/main/java/org/apache/iotdb/tsfile/TsFileRead.java")])]),s._v(" "),a("div",{staticClass:"language-java line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-java"}},[a("code",[a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("package")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("java"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("io"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("java"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("util"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ArrayList")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ReadOnlyTsFile")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileSequenceReader")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("common"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("expression"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("expression"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryExpression")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("expression"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("impl"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("BinaryExpression")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("expression"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("impl"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("expression"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("impl"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("SingleSeriesExpression")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("filter"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("filter"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ValueFilter")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("query"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("dataset"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryDataSet")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("/**\n * 该类将显示如何读取名为“ test.ts文件”的Ts文件文件。\n * TsFile文件“ test.tsfile”是从类TsFileWrite生成的。\n * 运行TsFileWrite首先生成test.tsfile\n */")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("class")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileRead")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n  "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("private")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("static")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("queryAndPrint")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ArrayList")]),a("span",{pre:!0,attrs:{class:"token generics"}},[a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v(" paths"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ReadOnlyTsFile")]),s._v(" readTsFile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" statement"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n          "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryExpression")]),s._v(" queryExpression "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryExpression")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("create")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("paths"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" statement"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryDataSet")]),s._v(" queryDataSet "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" readTsFile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("query")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("queryExpression"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("while")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("queryDataSet"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("hasNext")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n      "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("System")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("out"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("println")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("queryDataSet"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("next")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("System")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("out"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("println")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"------------"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n  "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n\n  "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("static")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("main")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),s._v(" args"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n\n    "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 文件路径")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" path "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"test.tsfile"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n    "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 创建阅读器并获取readTsFile接口")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileSequenceReader")]),s._v(" reader "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileSequenceReader")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("path"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ReadOnlyTsFile")]),s._v(" readTsFile "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ReadOnlyTsFile")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("reader"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 使用这些路径（所有传感器）进行所有查询")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ArrayList")]),a("span",{pre:!0,attrs:{class:"token generics"}},[a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v(" paths "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ArrayList")]),a("span",{pre:!0,attrs:{class:"token generics"}},[a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    paths"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("add")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"device_1.sensor_1"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    paths"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("add")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"device_1.sensor_2"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    paths"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("add")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v('"device_1.sensor_3"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n    "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 没有查询语句")]),s._v("\n    "),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("queryAndPrint")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("paths"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" readTsFile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("null")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n    "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("//离开时关闭阅读器")]),s._v("\n    reader"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("close")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n  "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br"),a("span",{staticClass:"line-number"},[s._v("4")]),a("br"),a("span",{staticClass:"line-number"},[s._v("5")]),a("br"),a("span",{staticClass:"line-number"},[s._v("6")]),a("br"),a("span",{staticClass:"line-number"},[s._v("7")]),a("br"),a("span",{staticClass:"line-number"},[s._v("8")]),a("br"),a("span",{staticClass:"line-number"},[s._v("9")]),a("br"),a("span",{staticClass:"line-number"},[s._v("10")]),a("br"),a("span",{staticClass:"line-number"},[s._v("11")]),a("br"),a("span",{staticClass:"line-number"},[s._v("12")]),a("br"),a("span",{staticClass:"line-number"},[s._v("13")]),a("br"),a("span",{staticClass:"line-number"},[s._v("14")]),a("br"),a("span",{staticClass:"line-number"},[s._v("15")]),a("br"),a("span",{staticClass:"line-number"},[s._v("16")]),a("br"),a("span",{staticClass:"line-number"},[s._v("17")]),a("br"),a("span",{staticClass:"line-number"},[s._v("18")]),a("br"),a("span",{staticClass:"line-number"},[s._v("19")]),a("br"),a("span",{staticClass:"line-number"},[s._v("20")]),a("br"),a("span",{staticClass:"line-number"},[s._v("21")]),a("br"),a("span",{staticClass:"line-number"},[s._v("22")]),a("br"),a("span",{staticClass:"line-number"},[s._v("23")]),a("br"),a("span",{staticClass:"line-number"},[s._v("24")]),a("br"),a("span",{staticClass:"line-number"},[s._v("25")]),a("br"),a("span",{staticClass:"line-number"},[s._v("26")]),a("br"),a("span",{staticClass:"line-number"},[s._v("27")]),a("br"),a("span",{staticClass:"line-number"},[s._v("28")]),a("br"),a("span",{staticClass:"line-number"},[s._v("29")]),a("br"),a("span",{staticClass:"line-number"},[s._v("30")]),a("br"),a("span",{staticClass:"line-number"},[s._v("31")]),a("br"),a("span",{staticClass:"line-number"},[s._v("32")]),a("br"),a("span",{staticClass:"line-number"},[s._v("33")]),a("br"),a("span",{staticClass:"line-number"},[s._v("34")]),a("br"),a("span",{staticClass:"line-number"},[s._v("35")]),a("br"),a("span",{staticClass:"line-number"},[s._v("36")]),a("br"),a("span",{staticClass:"line-number"},[s._v("37")]),a("br"),a("span",{staticClass:"line-number"},[s._v("38")]),a("br"),a("span",{staticClass:"line-number"},[s._v("39")]),a("br"),a("span",{staticClass:"line-number"},[s._v("40")]),a("br"),a("span",{staticClass:"line-number"},[s._v("41")]),a("br"),a("span",{staticClass:"line-number"},[s._v("42")]),a("br"),a("span",{staticClass:"line-number"},[s._v("43")]),a("br"),a("span",{staticClass:"line-number"},[s._v("44")]),a("br"),a("span",{staticClass:"line-number"},[s._v("45")]),a("br"),a("span",{staticClass:"line-number"},[s._v("46")]),a("br"),a("span",{staticClass:"line-number"},[s._v("47")]),a("br"),a("span",{staticClass:"line-number"},[s._v("48")]),a("br"),a("span",{staticClass:"line-number"},[s._v("49")]),a("br"),a("span",{staticClass:"line-number"},[s._v("50")]),a("br"),a("span",{staticClass:"line-number"},[s._v("51")]),a("br"),a("span",{staticClass:"line-number"},[s._v("52")]),a("br"),a("span",{staticClass:"line-number"},[s._v("53")]),a("br")])]),a("h2",{attrs:{id:"修改-tsfile-配置项"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#修改-tsfile-配置项"}},[s._v("#")]),s._v(" 修改 TsFile 配置项")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("TSFileConfig config = TSFileDescriptor.getInstance().getConfig();\nconfig.setXXX()\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])]),a("h2",{attrs:{id:"布隆过滤器"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#布隆过滤器"}},[s._v("#")]),s._v(" 布隆过滤器")]),s._v(" "),a("p",[s._v("布隆过滤器在加载元数据之前检查给定的时间序列是否在ts文件中。 这样可以提高加载元数据的性能，并跳过不包含指定时间序列的tsfile。\n如果要了解有关其机制的更多信息，可以参考： "),a("a",{attrs:{href:"https://en.wikipedia.org/wiki/Bloom_filter",target:"_blank",rel:"noopener noreferrer"}},[s._v("wiki page of bloom filter"),a("OutboundLink")],1),s._v(".")]),s._v(" "),a("h4",{attrs:{id:"配置"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#配置"}},[s._v("#")]),s._v(" 配置")]),s._v(" "),a("p",[s._v("您可以通过修改 TSFileConfig 里的 bloomFilterErrorRate 参数来控制Bloom过滤器的误报率。")]),s._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[s._v("# The acceptable error rate of bloom filter, should be in [0.01, 0.1], default is 0.05\nbloom_filter_error_rate=0.05\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br")])])])}),[],!1,null,null,null);t.default=e.exports}}]);