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| gitHub |
| <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>IoTDB用户手册 (V0.11.x)</span> <!----></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>开始</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>概述</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>概念</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>服务器端</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>客户端</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/zh/UserGuide/V0.11.x/Client/Command Line Interface.html" class="sidebar-link">命令行接口(CLI)</a></li><li><a href="/zh/UserGuide/V0.11.x/Client/Programming - Native API.html" class="active sidebar-link">原生接口</a></li><li><a href="/zh/UserGuide/V0.11.x/Client/Programming - JDBC.html" class="sidebar-link">JDBC</a></li><li><a href="/zh/UserGuide/V0.11.x/Client/Programming - Other Languages.html" class="sidebar-link">其他语言</a></li><li><a href="/zh/UserGuide/V0.11.x/Client/Programming - TsFile API.html" class="sidebar-link">TsFile API</a></li><li><a href="/zh/UserGuide/V0.11.x/Client/Programming - MQTT.html" class="sidebar-link">MQTT</a></li><li><a href="/zh/UserGuide/V0.11.x/Client/Status Codes.html" class="sidebar-link">状态码</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>操作指南</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>系统工具</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>生态集成</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>系统设计</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h1 id="编程-原生接口"><a href="#编程-原生接口" class="header-anchor">#</a> 编程 - 原生接口</h1> <h2 id="依赖"><a href="#依赖" class="header-anchor">#</a> 依赖</h2> <ul><li>JDK >= 1.8</li> <li>Maven >= 3.1</li></ul> <h2 id="安装到本地-maven-库"><a href="#安装到本地-maven-库" class="header-anchor">#</a> 安装到本地 maven 库</h2> <p>在根目录下运行:</p> <blockquote><p>mvn clean install -pl session -am -Dmaven.test.skip=true</p></blockquote> <h2 id="在-maven-中使用原生接口"><a href="#在-maven-中使用原生接口" class="header-anchor">#</a> 在 maven 中使用原生接口</h2> <div class="language- line-numbers-mode"><pre class="language-text"><code><dependencies> |
| <dependency> |
| <groupId>org.apache.iotdb</groupId> |
| <artifactId>iotdb-session</artifactId> |
| <version>0.11.1</version> |
| </dependency> |
| </dependencies> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><h2 id="原生接口使用示例"><a href="#原生接口使用示例" class="header-anchor">#</a> 原生接口使用示例</h2> <p>下面将给出Session对应的接口的简要介绍和对应参数：</p> <ul><li><p>初始化Session</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>Session(String host, int rpcPort) |
| Session(String host, String rpcPort, String username, String password) |
| Session(String host, int rpcPort, String username, String password) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div></li> <li><p>开启Session</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>Session.open() |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div></li> <li><p>关闭Session |
| </p> <div class="language- line-numbers-mode"><pre class="language-text"><code>Session.close() |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div></li> <li><p>设置存储组</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void setStorageGroup(String storageGroupId) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div></li> <li><p>删除单个或多个存储组</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void deleteStorageGroup(String storageGroup) |
| void deleteStorageGroups(List<String> storageGroups) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div></li> <li><p>创建单个或多个时间序列</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void createTimeseries(String path, TSDataType dataType, |
| TSEncoding encoding, CompressionType compressor, Map<String, String> props, |
| Map<String, String> tags, Map<String, String> attributes, String measurementAlias) |
| |
| void createMultiTimeseries(List<String> paths, List<TSDataType> dataTypes, |
| List<TSEncoding> encodings, List<CompressionType> compressors, |
| List<Map<String, String>> propsList, List<Map<String, String>> tagsList, |
| List<Map<String, String>> attributesList, List<String> measurementAliasList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br></div></div></li> <li><p>删除一个或多个时间序列</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void deleteTimeseries(String path) |
| void deleteTimeseries(List<String> paths) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div></li> <li><p>删除一个或多个时间序列在某个时间点前的数据</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void deleteData(String path, long time) |
| void deleteData(List<String> paths, long time) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div></li> <li><p>插入一个 Record，一个 Record 是一个设备一个时间戳下多个测点的数据。服务器需要做类型推断，可能会有额外耗时</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertRecord(String deviceId, long time, List<String> measurements, List<String> values) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div></li> <li><p>插入一个 Tablet，Tablet 是一个设备若干行非空数据块，每一行的列都相同</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertTablet(Tablet tablet) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div></li> <li><p>插入多个 Tablet</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertTablets(Map<String, Tablet> tablet) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div></li> <li><p>插入多个 Record。服务器需要做类型推断，可能会有额外耗时</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertRecords(List<String> deviceIds, List<Long> times, |
| List<List<String>> measurementsList, List<List<String>> valuesList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div></li> <li><p>插入一个 Record，一个 Record 是一个设备一个时间戳下多个测点的数据。提供数据类型后，服务器不需要做类型推断，可以提高性能</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertRecord(String deviceId, long time, List<String> measurements, |
| List<TSDataType> types, List<Object> values) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div></li> <li><p>插入多个 Record。提供数据类型后，服务器不需要做类型推断，可以提高性能</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertRecords(List<String> deviceIds, List<Long> times, |
| List<List<String>> measurementsList, List<List<TSDataType>> typesList, |
| List<List<Object>> valuesList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div></li></ul> <h2 id="测试客户端逻辑-网络传输代价的接口"><a href="#测试客户端逻辑-网络传输代价的接口" class="header-anchor">#</a> 测试客户端逻辑+网络传输代价的接口</h2> <ul><li><p>测试 testInsertRecords，不实际写入数据，只将数据传输到 server 即返回。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertRecords(List<String> deviceIds, List<Long> times, List<List<String>> measurementsList, List<List<String>> valuesList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>或 |
| or</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertRecords(List<String> deviceIds, List<Long> times, |
| List<List<String>> measurementsList, List<List<TSDataType>> typesList, |
| List<List<Object>> valuesList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div></li> <li><p>测试 insertRecord，不实际写入数据，只将数据传输到 server 即返回。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertRecord(String deviceId, long time, List<String> measurements, List<String> values) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>或</p> <div class="language- line-numbers-mode"><pre class="language-text"><code> void testInsertRecord(String deviceId, long time, List<String> measurements, |
| List<TSDataType> types, List<Object> values) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div></li> <li><p>测试 insertTablet，不实际写入数据，只将数据传输到 server 即返回。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertTablet(Tablet tablet) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div></li></ul> <h2 id="示例代码"><a href="#示例代码" class="header-anchor">#</a> 示例代码</h2> <p>浏览上述接口的详细信息，请参阅代码 <code>session/src/main/java/org/apache/iotdb/session/Session.java</code></p> <p>使用上述接口的示例代码在 <code>example/session/src/main/java/org/apache/iotdb/SessionExample.java</code></p> <h2 id="针对原生接口的连接池"><a href="#针对原生接口的连接池" class="header-anchor">#</a> 针对原生接口的连接池</h2> <p>我们提供了一个针对原生接口的连接池(<code>SessionPool</code>)，使用该接口时，你只需要指定连接池的大小，就可以在使用时从池中获取连接。 |
| 如果超过60s都没得到一个连接的话，那么会打印一条警告日志，但是程序仍将继续等待。</p> <p>当一个连接被用完后，他会自动返回池中等待下次被使用； |
| 当一个连接损坏后，他会从池中被删除，并重建一个连接重新执行用户的操作。</p> <p>对于查询操作：</p> <ol><li>使用SessionPool进行查询时，得到的结果集是<code>SessionDataSet</code>的封装类<code>SessionDataSetWrapper</code>;</li> <li>若对于一个查询的结果集，用户并没有遍历完且不再想继续遍历时，需要手动调用释放连接的操作<code>closeResultSet</code>;</li> <li>若对一个查询的结果集遍历时出现异常，也需要手动调用释放连接的操作<code>closeResultSet</code>.</li> <li>可以调用 <code>SessionDataSetWrapper</code> 的 <code>getColumnNames()</code> 方法得到结果集列名</li></ol> <p>使用示例可以参见 <code>session/src/test/java/org/apache/iotdb/session/pool/SessionPoolTest.java</code></p> <p>或 <code>example/session/src/main/java/org/apache/iotdb/SessionPoolExample.java</code></p> <h2 id="_0-9-0-10-版本iotdb-session-接口更新"><a href="#_0-9-0-10-版本iotdb-session-接口更新" class="header-anchor">#</a> 0.9-0.10 版本IoTDB Session 接口更新</h2> <p>从0.9到0.10版本的IoTDB session接口有了较大改变。一部分接口名称和参数类型发生了变化，另外新增了大量可用接口。所有session接口抛出的异常类型 <em>IoTDBSessionExeception</em> 更改为 <em>IoTDBConnectionException</em> 和 <em>StatementExecutionExeception</em> 。下面详细介绍具体接口的变化。</p> <h3 id="接口名称更改"><a href="#接口名称更改" class="header-anchor">#</a> 接口名称更改</h3> <h4 id="insert"><a href="#insert" class="header-anchor">#</a> insert()</h4> <p>用于插入一行数据，需提供数据点的deviceId, time, 所有measurement和相应的value值。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insert(String deviceId, long time, List<String> measurements, List<String> values) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>该方法在0.10版本中方法名发生变化</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertRecord(String deviceId, long time, List<String> measurements, List<String> values) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><h4 id="insertrowinbatch"><a href="#insertrowinbatch" class="header-anchor">#</a> insertRowInBatch()</h4> <p>用于插入多行数据，需提供各行数据的deviceId, time, 所有measurement名称和相应的value值。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertRowInBatch(List<String> deviceIds, List<Long> times, List<List<String>> measurementsList, |
| List<List<String>> valuesList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><p>该方法在0.10版本中方法名发生变化</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertRecords(List<String> deviceIds, List<Long> times, List<List<String>> measurementsList, |
| List<List<String>> valuesList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><h4 id="insertbatch"><a href="#insertbatch" class="header-anchor">#</a> insertBatch()</h4> <p>在0.9版本中用于以"RowBatch"结构为单位插入数据</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertBatch(RowBatch rowBatch) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>在0.10版本中"RowBatch"类型更改为"Tablet"类型，因此方法名也随之改变。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertTablet(Tablet tablet) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><h4 id="testinsertrow"><a href="#testinsertrow" class="header-anchor">#</a> testInsertRow()</h4> <p>用于测试插入一行接口的响应</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertRow(String deviceId, long time, List<String> measurements, List<String> values) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>在0.10版本中方法名改为testInsertRecord。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertRecord(String deviceId, long time, List<String> measurements, List<String> values) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><h4 id="testinsertrowinbatch"><a href="#testinsertrowinbatch" class="header-anchor">#</a> testInsertRowInBatch()</h4> <p>用于测试插入多行数据接口的响应</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertRowInBatch(List<String> deviceIds, List<Long> times, List<List<String>> measurementsList, |
| List<List<String>> valuesList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><p>在0.10版本中方法名改为testInsertRecords</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertRecords(List<String> deviceIds, List<Long> times, List<List<String>> measurementsList, |
| List<List<String>> valuesList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><h4 id="testinsertbatch"><a href="#testinsertbatch" class="header-anchor">#</a> testInsertBatch</h4> <p>用于测试以RowBatch结构为单位插入数据的响应</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertBatch(RowBatch rowBatch) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>在0.10版本中RowBatch类型更改为Tabet类型，因此方法名也随之改变为testInsertTablet</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertTablet(Tablet tablet) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><h3 id="新增接口"><a href="#新增接口" class="header-anchor">#</a> 新增接口</h3> <div class="language- line-numbers-mode"><pre class="language-text"><code>void open(boolean enableRPCCompression) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>开启一个session，并指定是否启用RPC压缩。注意客户端开启PRC压缩的状态需与服务端保持一致。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertRecord(String deviceId, long time, List<String> measurements, |
| List<TSDataType> types, List<Object> values) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><p>插入一行数据，该方法和已有的insertRecord()方法不同在于需额外提供每个measurement的类型信息types，且参数values以原始类型的方式提供。写入速度相对于参数为String格式的insertRecord接口要快一些。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertRecords(List<String> deviceIds, List<Long> times, List<List<String>> measurementsList, |
| List<List<TSDataType>> typesList, List<List<Object>> valuesList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><p>插入多行数据，该方法和已有的insertRecords()方法不同在于需额外提供每个measurement的类型信息typesList，且参数valuesList以原始类型的方式提供。写入速度相对于参数为String格式的insertRecords接口要快一些。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertTablet(Tablet tablet, boolean sorted) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>提供额外的sorted参数，表示tablet是否内部已排好序，如sorted为真则会省去排序的过程从而提升处理速度。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertTablets(Map<String, Tablet> tablets) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>新增insertTablets接口用于写入多个tablet结构，tablets参数为Map<device名, tablet数据></p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void insertTablets(Map<String, Tablet> tablets, boolean sorted) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>带额外sorted参数的insertTablets接口</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void testInsertRecord(String deviceId, long time, List<String> measurements, List<TSDataType> types, |
| List<Object> values) |
| void testInsertRecords(List<String> deviceIds, List<Long> times, List<List<String>> measurementsList, |
| List<List<TSDataType>> typesList, List<List<Object>> valuesList) |
| void testInsertTablet(Tablet tablet, boolean sorted) |
| void testInsertTablets(Map<String, Tablet> tablets) |
| void testInsertTablets(Map<String, Tablet> tablets, boolean sorted) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><p>以上接口均为新增的测试rpc响应的方法，用于测试新增的写入接口</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void createTimeseries(String path, TSDataType dataType, TSEncoding encoding, CompressionType compressor, |
| Map<String, String> props, Map<String, String> tags, Map<String, String> attributes, |
| String measurementAlias) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><p>在原来createTimeseries接口的基础上，创建时间序列可以额外指定时间序列的props, tags, attributes和measurementAlias。如果不需要指定以上额外参数可以将参数设为null。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>void createMultiTimeseries(List<String> paths, List<TSDataType> dataTypes, List<TSEncoding> encodings, |
| List<CompressionType> compressors, List<Map<String, String>> propsList, |
| List<Map<String, String>> tagsList, List<Map<String, String>> attributesList, |
| List<String> measurementAliasList) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><p>一次性创建多个时间序列，同时也可以指定多个时间序列的props, tags, attributes和measurementAlias。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>boolean checkTimeseriesExists(String path) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>用于检测时间序列是否存在</p></div> <div class="page-nav"><p class="inner"><span class="prev"> |
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