(window.webpackJsonp=window.webpackJsonp||[]).push([[382],{951:function(s,a,t){"use strict";t.r(a);var n=t(70),e=Object(n.a)({},(function(){var s=this,a=s.$createElement,t=s._self._c||a;return t("ContentSlotsDistributor",{attrs:{"slot-key":s.$parent.slotKey}},[t("h2",{attrs:{id:"tsfile-api"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#tsfile-api"}},[s._v("#")]),s._v(" TsFile API")]),s._v(" "),t("p",[s._v("TsFile 是在 IoTDB 中使用的时间序列的文件格式。在这个章节中，我们将介绍这种文件格式的用法。")]),s._v(" "),t("h3",{attrs:{id:"安装-tsfile-library"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#安装-tsfile-library"}},[s._v("#")]),s._v(" 安装 TsFile library")]),s._v(" "),t("p",[s._v("在您自己的项目中有两种方法使用 TsFile .")]),s._v(" "),t("ul",[t("li",[s._v("使用 jar 包: 编译源码生成 jar 包")])]),s._v(" "),t("div",{staticClass:"language-shell line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-shell"}},[t("code",[t("span",{pre:!0,attrs:{class:"token function"}},[s._v("git")]),s._v(" clone https://github.com/apache/iotdb.git\n"),t("span",{pre:!0,attrs:{class:"token builtin class-name"}},[s._v("cd")]),s._v(" tsfile/\nmvn clean package -Dmaven.test.skip"),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v("true\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br")])]),t("p",[s._v("命令执行完成之后，所有的 jar 包都可以从 "),t("code",[s._v("target/")]),s._v(" 目录下找到。之后您可以在自己的工程中导入 "),t("code",[s._v("target/tsfile-0.13.0-SNAPSHOT.jar")]),s._v(".")]),s._v(" "),t("ul",[t("li",[s._v("使用 Maven 依赖:")])]),s._v(" "),t("p",[s._v("编译源码并且部署到您的本地仓库中需要 3 步:")]),s._v(" "),t("ol",[t("li",[s._v("下载源码")])]),s._v(" "),t("div",{staticClass:"language-shell line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-shell"}},[t("code",[t("span",{pre:!0,attrs:{class:"token function"}},[s._v("git")]),s._v(" clone https://github.com/apache/iotdb.git\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("ol",{attrs:{start:"2"}},[t("li",[s._v("编译源码和部署到本地仓库")])]),s._v(" "),t("div",{staticClass:"language-shell line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-shell"}},[t("code",[t("span",{pre:!0,attrs:{class:"token builtin class-name"}},[s._v("cd")]),s._v(" tsfile/\nmvn clean "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("install")]),s._v(" -Dmaven.test.skip"),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v("true\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br")])]),t("ol",{attrs:{start:"3"}},[t("li",[s._v("在您自己的工程中增加依赖:")])]),s._v(" "),t("div",{staticClass:"language-xml line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-xml"}},[t("code",[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("dependency")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("groupId")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("org.apache.iotdb"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("groupId")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("artifactId")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("artifactId")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("version")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("0.12.0"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("version")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("dependency")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br"),t("span",{staticClass:"line-number"},[s._v("4")]),t("br"),t("span",{staticClass:"line-number"},[s._v("5")]),t("br")])]),t("p",[s._v("或者，您可以直接使用官方的 Maven 仓库:")]),s._v(" "),t("ol",[t("li",[s._v("首先，在"),t("code",[s._v("${username}\\.m2\\settings.xml")]),s._v("目录下的"),t("code",[s._v("settings.xml")]),s._v("文件中"),t("code",[s._v("<profiles>")]),s._v("\n节中增加"),t("code",[s._v("<profile>")]),s._v("，内容如下:")])]),s._v(" "),t("div",{staticClass:"language-xml line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-xml"}},[t("code",[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("profile")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("id")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("allow-snapshots"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("id")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n     "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("activation")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("activeByDefault")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("true"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("activeByDefault")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("activation")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("repositories")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("repository")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("  \n       "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("id")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("apache.snapshots"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("id")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n       "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("name")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("Apache Development Snapshot Repository"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("name")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n       "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("url")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("https://repository.apache.org/content/repositories/snapshots/"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("url")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n       "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("releases")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n           "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("enabled")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("false"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("enabled")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n       "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("releases")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n       "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("snapshots")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n           "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("enabled")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("true"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("enabled")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n       "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("snapshots")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n     "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("repository")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("repositories")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("profile")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br"),t("span",{staticClass:"line-number"},[s._v("4")]),t("br"),t("span",{staticClass:"line-number"},[s._v("5")]),t("br"),t("span",{staticClass:"line-number"},[s._v("6")]),t("br"),t("span",{staticClass:"line-number"},[s._v("7")]),t("br"),t("span",{staticClass:"line-number"},[s._v("8")]),t("br"),t("span",{staticClass:"line-number"},[s._v("9")]),t("br"),t("span",{staticClass:"line-number"},[s._v("10")]),t("br"),t("span",{staticClass:"line-number"},[s._v("11")]),t("br"),t("span",{staticClass:"line-number"},[s._v("12")]),t("br"),t("span",{staticClass:"line-number"},[s._v("13")]),t("br"),t("span",{staticClass:"line-number"},[s._v("14")]),t("br"),t("span",{staticClass:"line-number"},[s._v("15")]),t("br"),t("span",{staticClass:"line-number"},[s._v("16")]),t("br"),t("span",{staticClass:"line-number"},[s._v("17")]),t("br")])]),t("ol",{attrs:{start:"2"}},[t("li",[s._v("之后您可以在您的工程中增加如下依赖:")])]),s._v(" "),t("div",{staticClass:"language-xml line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-xml"}},[t("code",[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("dependency")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("groupId")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("org.apache.iotdb"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("groupId")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("artifactId")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("artifactId")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),s._v("version")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("0.13.0-SNAPSHOT"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("version")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token tag"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("</")]),s._v("dependency")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br"),t("span",{staticClass:"line-number"},[s._v("4")]),t("br"),t("span",{staticClass:"line-number"},[s._v("5")]),t("br")])]),t("h3",{attrs:{id:"tsfile-的使用"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#tsfile-的使用"}},[s._v("#")]),s._v(" TsFile 的使用")]),s._v(" "),t("p",[s._v("本章节演示TsFile的详细用法。")]),s._v(" "),t("p",[s._v("时序数据(Time-series Data)\n一个时序是由4个序列组成，分别是 device, measurement, time, value。")]),s._v(" "),t("ul",[t("li",[t("p",[t("strong",[s._v("measurement")]),s._v(": 时间序列描述的是一个物理或者形式的测量(measurement)，比如：城市的温度，一些商品的销售数量或者是火车在不同时间的速度。\n传统的传感器(如温度计)也采用单次测量(measurement)并产生时间序列，我们将在下面交替使用测量(measurement)和传感器。")])]),s._v(" "),t("li",[t("p",[t("strong",[s._v("device")]),s._v(": 一个设备指的是一个正在进行多次测量(产生多个时间序列)的实体，例如，\n​    ​    ​    一列正在运行的火车监控它的速度、油表、它已经运行的英里数，当前的乘客每个都被传送到一个时间序列。")])])]),s._v(" "),t("p",[t("strong",[s._v("单行数据")]),s._v(": 在许多工业应用程序中，一个设备通常包含多个传感器，这些传感器可能同时具有多个值，这称为一行数据。")]),s._v(" "),t("p",[s._v("在形式上，一行数据包含一个"),t("code",[s._v("device_id")]),s._v("，它是一个时间戳，表示从 1970年1月1日 00:00:00 开始的毫秒数,\n以及由"),t("code",[s._v("measurement_id")]),s._v("和相应的"),t("code",[s._v("value")]),s._v("组成的几个数据对。一行中的所有数据对都属于这个"),t("code",[s._v("device_id")]),s._v("，并且具有相同的时间戳。\n如果其中一个度量值"),t("code",[s._v("measurements")]),s._v("在某个时间戳"),t("code",[s._v("timestamp")]),s._v("没有值"),t("code",[s._v("value")]),s._v("，将使用一个空格表示(实际上 TsFile 并不存储 null 值)。\n其格式如下：")]),s._v(" "),t("div",{staticClass:"language- line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-text"}},[t("code",[s._v("device_id, timestamp, <measurement_id, value>...\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("示例数据如下所示。在本例中，两个度量值(measurement)的数据类型分别是"),t("code",[s._v("INT32")]),s._v("和"),t("code",[s._v("FLOAT")]),s._v("。")]),s._v(" "),t("div",{staticClass:"language- line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-text"}},[t("code",[s._v("device_1, 1490860659000, m1, 10, m2, 12.12\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("h4",{attrs:{id:"写入-tsfile"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#写入-tsfile"}},[s._v("#")]),s._v(" 写入 TsFile")]),s._v(" "),t("p",[s._v('TsFile可以通过以下三个步骤生成，完整的代码参见"写入 TsFile 示例"章节。')]),s._v(" "),t("ol",[t("li",[t("p",[s._v("构造一个"),t("code",[s._v("TsFileWriter")]),s._v("实例。")]),s._v(" "),t("p",[s._v("以下是可用的构造函数:")]),s._v(" "),t("ul",[t("li",[s._v("没有预定义 schema")])]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("File")]),s._v(" file"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("ul",[t("li",[s._v("预定义 schema")])]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("File")]),s._v(" file"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Schema")]),s._v(" schema"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("这个是用于使用 HDFS 文件系统的。"),t("code",[s._v("TsFileOutput")]),s._v("可以是"),t("code",[s._v("HDFSOutput")]),s._v("类的一个实例。")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileOutput")]),s._v(" output"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Schema")]),s._v(" schema"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v(" \n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("如果你想自己设置一些 TSFile 的配置，你可以使用"),t("code",[s._v("config")]),s._v("参数。比如:")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSFileConfig")]),s._v(" conf "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSFileConfig")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\nconf"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("setTSFileStorageFs")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"HDFS"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),s._v(" tsFileWriter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("file"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" schema"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" conf"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br")])]),t("p",[s._v("在上面的例子中，数据文件将存储在 HDFS 中，而不是本地文件系统中。如果你想在本地文件系统中存储数据文件，你可以使用"),t("code",[s._v('conf.setTSFileStorageFs("LOCAL")')]),s._v("，这也是默认的配置。")]),s._v(" "),t("p",[s._v("您还可以通过"),t("code",[s._v("config.setHdfsIp(...)")]),s._v("和"),t("code",[s._v("config.setHdfsPort(...)")]),s._v("来配置 HDFS 的 IP 和端口。默认的 IP是"),t("code",[s._v("localhost")]),s._v("，默认的"),t("code",[s._v("RPC")]),s._v("端口是"),t("code",[s._v("9000")]),s._v(".")]),s._v(" "),t("p",[t("strong",[s._v("参数:")])]),s._v(" "),t("ul",[t("li",[s._v("file : 写入 TsFile 数据的文件")]),s._v(" "),t("li",[s._v("schema : 文件的 schemas，将在下章进行介绍")]),s._v(" "),t("li",[s._v("config : TsFile 的一些配置项")])])]),s._v(" "),t("li",[t("p",[s._v("添加测量值(measurement)")]),s._v(" "),t("p",[s._v("你也可以先创建一个"),t("code",[s._v("Schema")]),s._v("类的实例然后把它传递给"),t("code",[s._v("TsFileWriter")]),s._v("类的构造函数")]),s._v(" "),t("p",[t("code",[s._v("Schema")]),s._v("类保存的是一个映射关系，key 是一个 measurement 的名字，value 是 measurement schema.")]),s._v(" "),t("p",[s._v("下面是一系列接口:")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// Create an empty Schema or from an existing map")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Schema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Schema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Map")]),t("span",{pre:!0,attrs:{class:"token generics"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v(" measurements"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// Use this two interfaces to add measurements")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("registerMeasurement")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),s._v(" descriptor"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("registerMeasurements")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Map")]),t("span",{pre:!0,attrs:{class:"token generics"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v(" measurements"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// Some useful getter and checker")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("getMeasurementDataType")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" measurementId"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("getMeasurementSchema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" measurementId"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Map")]),t("span",{pre:!0,attrs:{class:"token generics"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("getAllMeasurementSchema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("boolean")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("hasMeasurement")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" measurementId"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br"),t("span",{staticClass:"line-number"},[s._v("4")]),t("br"),t("span",{staticClass:"line-number"},[s._v("5")]),t("br"),t("span",{staticClass:"line-number"},[s._v("6")]),t("br"),t("span",{staticClass:"line-number"},[s._v("7")]),t("br"),t("span",{staticClass:"line-number"},[s._v("8")]),t("br"),t("span",{staticClass:"line-number"},[s._v("9")]),t("br"),t("span",{staticClass:"line-number"},[s._v("10")]),t("br"),t("span",{staticClass:"line-number"},[s._v("11")]),t("br")])]),t("p",[s._v("你可以在"),t("code",[s._v("TsFileWriter")]),s._v("类中使用以下接口来添加额外的测量(measurement):\n​")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("addMeasurement")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),s._v(" measurementSchema"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("WriteProcessException")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[t("code",[s._v("MeasurementSchema")]),s._v("类保存了一个测量(measurement)的信息，有几个构造函数:")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" measurementId"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),s._v(" type"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),s._v(" encoding"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" measurementId"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),s._v(" type"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),s._v(" encoding"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("CompressionType")]),s._v(" compressionType"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" measurementId"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),s._v(" type"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),s._v(" encoding"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("CompressionType")]),s._v(" compressionType"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" \n"),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Map")]),t("span",{pre:!0,attrs:{class:"token generics"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v(" props"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br"),t("span",{staticClass:"line-number"},[s._v("4")]),t("br")])]),t("p",[t("strong",[s._v("参数:")]),s._v("\n​")]),s._v(" "),t("ul",[t("li",[t("p",[s._v("measurementID: 测量的名称，通常是传感器的名称。")])]),s._v(" "),t("li",[t("p",[s._v("type: 数据类型，现在支持六种类型: "),t("code",[s._v("BOOLEAN")]),s._v(", "),t("code",[s._v("INT32")]),s._v(", "),t("code",[s._v("INT64")]),s._v(", "),t("code",[s._v("FLOAT")]),s._v(", "),t("code",[s._v("DOUBLE")]),s._v(", "),t("code",[s._v("TEXT")]),s._v(";")])]),s._v(" "),t("li",[t("p",[s._v("encoding: 编码类型.")])]),s._v(" "),t("li",[t("p",[s._v("compression: 压缩方式. 现在支持 "),t("code",[s._v("UNCOMPRESSED")]),s._v(" 和 "),t("code",[s._v("SNAPPY")]),s._v(".")])]),s._v(" "),t("li",[t("p",[s._v("props: 特殊数据类型的属性。比如说"),t("code",[s._v("FLOAT")]),s._v("和"),t("code",[s._v("DOUBLE")]),s._v("可以设置"),t("code",[s._v("max_point_number")]),s._v("，"),t("code",[s._v("TEXT")]),s._v("可以设置"),t("code",[s._v("max_string_length")]),s._v('。\n可以使用Map来保存键值对，比如("max_point_number", "3")。')])])]),s._v(" "),t("blockquote",[t("p",[t("strong",[s._v("注意:")]),s._v(" 虽然一个测量(measurement)的名字可以被用在多个deltaObjects中, 但是它的参数是不允许被修改的。比如:\n不允许多次为同一个测量(measurement)名添加不同类型的编码。下面是一个错误示例:")])]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token comment"}},[s._v('// The measurement "sensor_1" is float type')]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("addMeasurement")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_1"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("FLOAT"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("RLE"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// This call will throw a WriteProcessException exception")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("addMeasurement")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("MeasurementSchema")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_1"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("INT32"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSEncoding")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("RLE"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br"),t("span",{staticClass:"line-number"},[s._v("4")]),t("br")])])]),s._v(" "),t("li",[t("p",[s._v("插入和写入数据。")]),s._v(" "),t("p",[s._v("使用这个接口创建一个新的"),t("code",[s._v("TSRecord")]),s._v("(时间戳和设备对)。")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSRecord")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("long")]),s._v(" timestamp"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" deviceId"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("然后创建一个"),t("code",[s._v("DataPoint")]),s._v("(度量(measurement)和值的对应)，并使用 addTuple 方法将数据 DataPoint 添加正确的值到 TsRecord。")]),s._v(" "),t("p",[s._v("用下面这种方法写")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("write")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSRecord")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("record")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("WriteProcessException")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])])]),s._v(" "),t("li",[t("p",[s._v("调用"),t("code",[s._v("close")]),s._v("方法来完成写入过程。")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("close")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])])])]),s._v(" "),t("p",[s._v("我们也支持将数据写入已关闭的 TsFile 文件中。")]),s._v(" "),t("ol",[t("li",[t("p",[s._v("使用"),t("code",[s._v("ForceAppendTsFileWriter")]),s._v("打开已经关闭的文件。")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ForceAppendTsFileWriter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("File")]),s._v(" file"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])])]),s._v(" "),t("li",[t("p",[s._v("调用 "),t("code",[s._v("doTruncate")]),s._v(" 去掉文件的Metadata部分")])]),s._v(" "),t("li",[t("p",[s._v("使用  "),t("code",[s._v("ForceAppendTsFileWriter")]),s._v(" 构造另一个"),t("code",[s._v("TsFileWriter")])]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileWriter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileIOWriter")]),s._v(" fileWriter"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])])])]),s._v(" "),t("p",[s._v("请注意 此时需要重新添加测量值(measurement) 再进行上述写入操作。")]),s._v(" "),t("h4",{attrs:{id:"写入-tsfile-示例"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#写入-tsfile-示例"}},[s._v("#")]),s._v(" 写入 TsFile 示例")]),s._v(" "),t("p",[s._v("您需要安装 TsFile 到本地的 Maven 仓库中。")]),s._v(" "),t("div",{staticClass:"language-shell line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-shell"}},[t("code",[s._v("mvn clean "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("install")]),s._v(" -pl tsfile -am -DskipTests\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("如果存在"),t("strong",[s._v("非对齐")]),s._v("的时序数据(比如：不是所有的传感器都有值)，您可以通过构造"),t("strong",[s._v("TSRecord")]),s._v("来写入。")]),s._v(" "),t("p",[s._v("更详细的例子可以在")]),s._v(" "),t("div",{staticClass:"language- line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-text"}},[t("code",[s._v("/example/tsfile/src/main/java/org/apache/iotdb/tsfile/TsFileWriteWithTSRecord.java\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("中查看")]),s._v(" "),t("p",[s._v("如果所有时序数据都是"),t("strong",[s._v("对齐")]),s._v("的，您可以通过构造"),t("strong",[s._v("Tablet")]),s._v("来写入数据。")]),s._v(" "),t("p",[s._v("更详细的例子可以在")]),s._v(" "),t("div",{staticClass:"language- line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-text"}},[t("code",[s._v("/example/tsfile/src/main/java/org/apache/iotdb/tsfile/TsFileWriteWithTablet.java\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("中查看")]),s._v(" "),t("p",[s._v("在已关闭的TsFile 文件中写入新数据的详细例子可以在")]),s._v(" "),t("div",{staticClass:"language- line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-text"}},[t("code",[s._v("/example/tsfile/src/main/java/org/apache/iotdb/tsfile/TsFileForceAppendWrite.java\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("中查看")]),s._v(" "),t("h4",{attrs:{id:"读取-tsfile-接口"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#读取-tsfile-接口"}},[s._v("#")]),s._v(" 读取 TsFile 接口")]),s._v(" "),t("ul",[t("li",[s._v("路径的定义")])]),s._v(" "),t("p",[s._v('路径是一个点(.)分隔的字符串，它唯一地标识 TsFile 中的时间序列，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正如之前提到的，不同设备中的相同测量(measurement)具有相同的数据类型和编码，设备也是唯一的。')]),s._v(" "),t("p",[s._v("在read接口中，参数"),t("code",[s._v("paths")]),s._v("表示要选择的测量值(measurement)。\nPath实例可以很容易地通过类"),t("code",[s._v("Path")]),s._v("来构造。例如:")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),s._v(" p "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"device_1.sensor_1"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("我们可以为查询传递一个 ArrayList 路径，以支持多个路径查询。")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("List")]),t("span",{pre:!0,attrs:{class:"token generics"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v(" paths "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ArrayList")]),t("span",{pre:!0,attrs:{class:"token generics"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\npaths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("add")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"device_1.sensor_1"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\npaths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("add")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"device_1.sensor_3"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br")])]),t("blockquote",[t("p",[t("strong",[s._v("注意:")]),s._v(" 在构造路径时，参数的格式应该是一个点(.)分隔的字符串，最后一部分是measurement，其余部分确认为deviceId。")])]),s._v(" "),t("ul",[t("li",[t("p",[s._v("定义 Filter")]),s._v(" "),t("ul",[t("li",[t("p",[s._v("使用条件过滤\n在 TsFile 读取过程中使用 Filter 来选择满足一个或多个给定条件的数据。")])]),s._v(" "),t("li",[t("p",[s._v("IExpression\n"),t("code",[s._v("IExpression")]),s._v("是一个过滤器表达式接口，它将被传递给系统查询时调用。\n我们创建一个或多个筛选器表达式，并且可以使用"),t("code",[s._v("Binary Filter Operators")]),s._v("将它们连接形成最终表达式。")])])])]),s._v(" "),t("li",[t("p",[t("strong",[s._v("创建一个Filter表达式")])]),s._v(" "),t("p",[s._v("有两种类型的过滤器。")]),s._v(" "),t("ul",[t("li",[s._v("TimeFilter: 使用时序数据中的"),t("code",[s._v("time")]),s._v("过滤。")])]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" timeFilterExpr "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])])])]),s._v(" "),t("p",[s._v("使用以下关系获得一个"),t("code",[s._v("TimeFilter")]),s._v("对象(值是一个 long 型变量)。")]),s._v(" "),t("table",[t("thead",[t("tr",[t("th",[s._v("Relationship")]),s._v(" "),t("th",[s._v("Description")])])]),s._v(" "),t("tbody",[t("tr",[t("td",[s._v("TimeFilter.eq(value)")]),s._v(" "),t("td",[s._v("选择时间等于值的数据")])]),s._v(" "),t("tr",[t("td",[s._v("TimeFilter.lt(value)")]),s._v(" "),t("td",[s._v("选择时间小于值的数据")])]),s._v(" "),t("tr",[t("td",[s._v("TimeFilter.gt(value)")]),s._v(" "),t("td",[s._v("选择时间大于值的数据")])]),s._v(" "),t("tr",[t("td",[s._v("TimeFilter.ltEq(value)")]),s._v(" "),t("td",[s._v("选择时间小于等于值的数据")])]),s._v(" "),t("tr",[t("td",[s._v("TimeFilter.gtEq(value)")]),s._v(" "),t("td",[s._v("选择时间大于等于值的数据")])]),s._v(" "),t("tr",[t("td",[s._v("TimeFilter.notEq(value)")]),s._v(" "),t("td",[s._v("选择时间不等于值的数据")])]),s._v(" "),t("tr",[t("td",[s._v("TimeFilter.not(TimeFilter)")]),s._v(" "),t("td",[s._v("选择时间不满足另一个时间过滤器的数据")])])])]),s._v(" "),t("ul",[t("li",[s._v("ValueFilter: 使用时序数据中的"),t("code",[s._v("value")]),s._v("过滤。")])]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" valueFilterExpr "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("SingleSeriesExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ValueFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[t("code",[s._v("ValueFilter")]),s._v("的用法与"),t("code",[s._v("TimeFilter")]),s._v("相同，只是需要确保值的类型等于measurement(在路径中定义)的类型。")]),s._v(" "),t("ul",[t("li",[t("p",[t("strong",[s._v("Binary Filter Operators")])]),s._v(" "),t("p",[s._v("Binary filter operators 可以用来连接两个单独的表达式。")]),s._v(" "),t("ul",[t("li",[s._v("BinaryExpression.and(Expression, Expression): 选择同时满足两个表达式的数据。")]),s._v(" "),t("li",[s._v("BinaryExpression.or(Expression, Expression): 选择满足任意一个表达式值的数据。")])])])]),s._v(" "),t("p",[s._v("Filter Expression 示例")]),s._v(" "),t("ul",[t("li",[t("strong",[s._v("TimeFilterExpression 示例")])])]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" timeFilterExpr "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("eq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("15")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// series time = 15")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" timeFilterExpr "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("ltEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("15")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// series time <= 15")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" timeFilterExpr "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("lt")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("15")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// series time < 15")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" timeFilterExpr "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("gtEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("15")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// series time >= 15")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" timeFilterExpr "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("notEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("15")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// series time != 15")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" timeFilterExpr "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("BinaryExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("and")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("\n\t\t"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("gtEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("15L")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("lt")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("25L")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 15 <= series time < 25")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br")])]),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" timeFilterExpr "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("BinaryExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("or")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("gtEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("15L")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("lt")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("25L")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// series time >= 15 or series time < 25")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br")])]),t("ul",[t("li",[s._v("读取接口")])]),s._v(" "),t("p",[s._v("首先，我们打开 TsFile 并从文件路径"),t("code",[s._v("path")]),s._v("中获取一个"),t("code",[s._v("ReadOnlyTsFile")]),s._v("实例。")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileSequenceReader")]),s._v(" reader "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileSequenceReader")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("path"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ReadOnlyTsFile")]),s._v(" readTsFile "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ReadOnlyTsFile")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("reader"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br")])]),t("p",[s._v("接下来，我们准备路径数组和查询表达式，然后通过这个接口得到最终的"),t("code",[s._v("QueryExpression")]),s._v("对象:")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryExpression")]),s._v(" queryExpression "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("create")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("paths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" statement"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("ReadOnlyTsFile类有两个"),t("code",[s._v("query")]),s._v("方法来执行查询。")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryDataSet")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("query")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryExpression")]),s._v(" queryExpression"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryDataSet")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("query")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryExpression")]),s._v(" queryExpression"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("long")]),s._v(" partitionStartOffset"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("long")]),s._v(" partitionEndOffset"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br")])]),t("p",[s._v("此方法是为高级应用(如 TsFile-Spark 连接器)设计的。")]),s._v(" "),t("ul",[t("li",[t("strong",[s._v("参数")]),s._v(" : 对于第二个方法，添加了两个额外的参数来支持部分查询(Partial Query):\n"),t("ul",[t("li",[t("code",[s._v("partitionStartOffset")]),s._v(": TsFile 的开始偏移量")]),s._v(" "),t("li",[t("code",[s._v("partitionEndOffset")]),s._v(": TsFile 的结束偏移量")])])])]),s._v(" "),t("blockquote",[t("p",[s._v("什么是部分查询?")])]),s._v(" "),t("blockquote",[t("p",[s._v('在一些分布式文件系统中(比如：HDFS), 文件被分成几个部分，这些部分被称为"Blocks"并存储在不同的节点中。在涉及的每个节点上并行执行查询可以提高效率。因此需要部分查询(Partial Query)。部分查询(Partial Query)仅支持查询 TsFile 中被'),t("code",[s._v("QueryConstant.PARTITION_START_OFFSET")]),s._v("和"),t("code",[s._v("QueryConstant.PARTITION_END_OFFSET")]),s._v("分割的部分。")])]),s._v(" "),t("ul",[t("li",[s._v("QueryDataset 接口")])]),s._v(" "),t("p",[s._v("上面执行的查询将返回一个"),t("code",[s._v("QueryDataset")]),s._v("对象。")]),s._v(" "),t("p",[s._v("以下是一些用户常用的接口：")]),s._v(" "),t("ul",[t("li",[t("p",[t("code",[s._v("bool hasNext();")])]),s._v(" "),t("p",[s._v("如果该数据集仍然有数据，则返回true。")])]),s._v(" "),t("li",[t("p",[t("code",[s._v("List<Path> getPaths()")])]),s._v(" "),t("p",[s._v("获取这个数据集中的路径。")])]),s._v(" "),t("li",[t("p",[t("code",[s._v("List<TSDataType> getDataTypes();")])]),s._v(" "),t("p",[s._v("获取数据类型。")])]),s._v(" "),t("li",[t("p",[t("code",[s._v("RowRecord next() throws IOException;")])]),s._v(" "),t("p",[s._v("获取下一条记录。")]),s._v(" "),t("p",[t("code",[s._v("RowRecord")]),s._v("类包含一个"),t("code",[s._v("long")]),s._v("类型的时间戳和一个"),t("code",[s._v("List<Field>")]),s._v("，用于不同传感器中的数据，我们可以使用两个getter方法来获取它们。")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("long")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("getTimestamp")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("List")]),t("span",{pre:!0,attrs:{class:"token generics"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Field")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("getFields")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br")])]),t("p",[s._v("要从一个字段获取数据，请使用以下方法:")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSDataType")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("getDataType")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Object")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("getObjectValue")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br")])])])]),s._v(" "),t("h4",{attrs:{id:"读取现有-tsfile-示例"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#读取现有-tsfile-示例"}},[s._v("#")]),s._v(" 读取现有 TsFile 示例")]),s._v(" "),t("p",[s._v("您需要安装 TsFile 到本地的 Maven 仓库中。")]),s._v(" "),t("p",[s._v("有关查询语句的更详细示例，请参见\n"),t("code",[s._v("/example/tsfile/src/main/java/org/apache/iotdb/tsfile/TsFileRead.java")])]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("package")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("java"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("io"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("java"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("util"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ArrayList")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ReadOnlyTsFile")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileSequenceReader")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("common"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("expression"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("expression"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("expression"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("impl"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("BinaryExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("expression"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("impl"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("expression"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("impl"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("SingleSeriesExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("filter"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("filter"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ValueFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token namespace"}},[s._v("org"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("apache"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("iotdb"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("tsfile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("read"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("query"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("dataset"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")])]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryDataSet")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n"),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v('/**\n * The class is to show how to read TsFile file named "test.tsfile".\n * The TsFile file "test.tsfile" is generated from class TsFileWrite.\n * Run TsFileWrite to generate the test.tsfile first\n */')]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("class")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileRead")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("private")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("static")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("final")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" DEVICE1 "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"device_1"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n  \n  "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("private")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("static")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("queryAndPrint")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ArrayList")]),t("span",{pre:!0,attrs:{class:"token generics"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v(" paths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ReadOnlyTsFile")]),s._v(" readTsFile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" statement"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n          "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryExpression")]),s._v(" queryExpression "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("create")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("paths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" statement"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("QueryDataSet")]),s._v(" queryDataSet "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" readTsFile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("query")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("queryExpression"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("while")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("queryDataSet"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("hasNext")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n      "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("System")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("out"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("println")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("queryDataSet"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("next")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("System")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("out"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("println")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"------------"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n\n  "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("public")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("static")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("void")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("main")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),s._v(" args"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("throws")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IOException")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n\n    "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// file path")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("String")]),s._v(" path "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"test.tsfile"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n    "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// create reader and get the readTsFile interface")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("try")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileSequenceReader")]),s._v(" reader "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TsFileSequenceReader")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("path"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n         "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ReadOnlyTsFile")]),s._v(" readTsFile "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ReadOnlyTsFile")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("reader"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n\t \n    "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// use these paths(all sensors) for all the queries")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ArrayList")]),t("span",{pre:!0,attrs:{class:"token generics"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),s._v(" paths "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ArrayList")]),t("span",{pre:!0,attrs:{class:"token generics"}},[t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("<")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(">")])]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    paths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("add")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("DEVICE1"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_1"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    paths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("add")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("DEVICE1"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_2"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    paths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("add")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("DEVICE1"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_3"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n    "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// no filter, should select 1 2 3 4 6 7 8")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("queryAndPrint")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("paths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" readTsFile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("null")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n   "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// time filter : 4 <= time <= 10, should select 4 6 7 8")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" timeFilter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v("\n       "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("BinaryExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("and")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("\n           "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("gtEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("4L")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("\n           "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("ltEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("10L")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("queryAndPrint")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("paths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" readTsFile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" timeFilter"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n   "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// value filter : device_1.sensor_2 <= 20, should select 1 2 4 6 7")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" valueFilter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v("\n        "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("SingleSeriesExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("DEVICE1"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_2"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ValueFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("ltEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("20L")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("queryAndPrint")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("paths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" readTsFile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" valueFilter"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n   "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// time filter : 4 <= time <= 10, value filter : device_1.sensor_3 >= 20, should select 4 7 8")]),s._v("\n    timeFilter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v("\n        "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("BinaryExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("and")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("\n            "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("gtEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("4L")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("\n            "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("GlobalTimeExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TimeFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("ltEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("10L")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    valueFilter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v("\n        "),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("SingleSeriesExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Path")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("DEVICE1"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"sensor_3"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("ValueFilter")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("gtEq")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("20L")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("IExpression")]),s._v(" finalFilter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("BinaryExpression")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("and")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("timeFilter"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" valueFilter"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("queryAndPrint")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("paths"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" readTsFile"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" finalFilter"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n    "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n  "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br"),t("span",{staticClass:"line-number"},[s._v("4")]),t("br"),t("span",{staticClass:"line-number"},[s._v("5")]),t("br"),t("span",{staticClass:"line-number"},[s._v("6")]),t("br"),t("span",{staticClass:"line-number"},[s._v("7")]),t("br"),t("span",{staticClass:"line-number"},[s._v("8")]),t("br"),t("span",{staticClass:"line-number"},[s._v("9")]),t("br"),t("span",{staticClass:"line-number"},[s._v("10")]),t("br"),t("span",{staticClass:"line-number"},[s._v("11")]),t("br"),t("span",{staticClass:"line-number"},[s._v("12")]),t("br"),t("span",{staticClass:"line-number"},[s._v("13")]),t("br"),t("span",{staticClass:"line-number"},[s._v("14")]),t("br"),t("span",{staticClass:"line-number"},[s._v("15")]),t("br"),t("span",{staticClass:"line-number"},[s._v("16")]),t("br"),t("span",{staticClass:"line-number"},[s._v("17")]),t("br"),t("span",{staticClass:"line-number"},[s._v("18")]),t("br"),t("span",{staticClass:"line-number"},[s._v("19")]),t("br"),t("span",{staticClass:"line-number"},[s._v("20")]),t("br"),t("span",{staticClass:"line-number"},[s._v("21")]),t("br"),t("span",{staticClass:"line-number"},[s._v("22")]),t("br"),t("span",{staticClass:"line-number"},[s._v("23")]),t("br"),t("span",{staticClass:"line-number"},[s._v("24")]),t("br"),t("span",{staticClass:"line-number"},[s._v("25")]),t("br"),t("span",{staticClass:"line-number"},[s._v("26")]),t("br"),t("span",{staticClass:"line-number"},[s._v("27")]),t("br"),t("span",{staticClass:"line-number"},[s._v("28")]),t("br"),t("span",{staticClass:"line-number"},[s._v("29")]),t("br"),t("span",{staticClass:"line-number"},[s._v("30")]),t("br"),t("span",{staticClass:"line-number"},[s._v("31")]),t("br"),t("span",{staticClass:"line-number"},[s._v("32")]),t("br"),t("span",{staticClass:"line-number"},[s._v("33")]),t("br"),t("span",{staticClass:"line-number"},[s._v("34")]),t("br"),t("span",{staticClass:"line-number"},[s._v("35")]),t("br"),t("span",{staticClass:"line-number"},[s._v("36")]),t("br"),t("span",{staticClass:"line-number"},[s._v("37")]),t("br"),t("span",{staticClass:"line-number"},[s._v("38")]),t("br"),t("span",{staticClass:"line-number"},[s._v("39")]),t("br"),t("span",{staticClass:"line-number"},[s._v("40")]),t("br"),t("span",{staticClass:"line-number"},[s._v("41")]),t("br"),t("span",{staticClass:"line-number"},[s._v("42")]),t("br"),t("span",{staticClass:"line-number"},[s._v("43")]),t("br"),t("span",{staticClass:"line-number"},[s._v("44")]),t("br"),t("span",{staticClass:"line-number"},[s._v("45")]),t("br"),t("span",{staticClass:"line-number"},[s._v("46")]),t("br"),t("span",{staticClass:"line-number"},[s._v("47")]),t("br"),t("span",{staticClass:"line-number"},[s._v("48")]),t("br"),t("span",{staticClass:"line-number"},[s._v("49")]),t("br"),t("span",{staticClass:"line-number"},[s._v("50")]),t("br"),t("span",{staticClass:"line-number"},[s._v("51")]),t("br"),t("span",{staticClass:"line-number"},[s._v("52")]),t("br"),t("span",{staticClass:"line-number"},[s._v("53")]),t("br"),t("span",{staticClass:"line-number"},[s._v("54")]),t("br"),t("span",{staticClass:"line-number"},[s._v("55")]),t("br"),t("span",{staticClass:"line-number"},[s._v("56")]),t("br"),t("span",{staticClass:"line-number"},[s._v("57")]),t("br"),t("span",{staticClass:"line-number"},[s._v("58")]),t("br"),t("span",{staticClass:"line-number"},[s._v("59")]),t("br"),t("span",{staticClass:"line-number"},[s._v("60")]),t("br"),t("span",{staticClass:"line-number"},[s._v("61")]),t("br"),t("span",{staticClass:"line-number"},[s._v("62")]),t("br"),t("span",{staticClass:"line-number"},[s._v("63")]),t("br"),t("span",{staticClass:"line-number"},[s._v("64")]),t("br"),t("span",{staticClass:"line-number"},[s._v("65")]),t("br"),t("span",{staticClass:"line-number"},[s._v("66")]),t("br"),t("span",{staticClass:"line-number"},[s._v("67")]),t("br"),t("span",{staticClass:"line-number"},[s._v("68")]),t("br"),t("span",{staticClass:"line-number"},[s._v("69")]),t("br"),t("span",{staticClass:"line-number"},[s._v("70")]),t("br"),t("span",{staticClass:"line-number"},[s._v("71")]),t("br"),t("span",{staticClass:"line-number"},[s._v("72")]),t("br"),t("span",{staticClass:"line-number"},[s._v("73")]),t("br"),t("span",{staticClass:"line-number"},[s._v("74")]),t("br"),t("span",{staticClass:"line-number"},[s._v("75")]),t("br")])]),t("h3",{attrs:{id:"修改-tsfile-配置项"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#修改-tsfile-配置项"}},[s._v("#")]),s._v(" 修改 TsFile 配置项")]),s._v(" "),t("div",{staticClass:"language-java line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-java"}},[t("code",[t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSFileConfig")]),s._v(" config "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("TSFileDescriptor")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("getInstance")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("getConfig")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\nconfig"),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),t("span",{pre:!0,attrs:{class:"token function"}},[s._v("setXXX")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br")])])])}),[],!1,null,null,null);a.default=e.exports}}]);