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class="vp-page"><!--[--><!--[--><!----><!--]--><!----><nav class="vp-breadcrumb disable"></nav><div class="vp-page-title"><h1><!---->C++ Native API</h1><div class="page-info"><!----><!----><span class="page-date-info" aria-label="Writing Date"><svg xmlns="http://www.w3.org/2000/svg" class="icon calendar-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="calendar icon"><path d="M716.4 110.137c0-18.753-14.72-33.473-33.472-33.473-18.753 0-33.473 14.72-33.473 33.473v33.473h66.993v-33.473zm-334.87 0c0-18.753-14.72-33.473-33.473-33.473s-33.52 14.72-33.52 33.473v33.473h66.993v-33.473zm468.81 33.52H716.4v100.465c0 18.753-14.72 33.473-33.472 33.473a33.145 33.145 0 01-33.473-33.473V143.657H381.53v100.465c0 18.753-14.72 33.473-33.473 33.473a33.145 33.145 0 01-33.473-33.473V143.657H180.6A134.314 134.314 0 0046.66 277.595v535.756A134.314 134.314 0 00180.6 947.289h669.74a134.36 134.36 0 00133.94-133.938V277.595a134.314 134.314 0 00-133.94-133.938zm33.473 267.877H147.126a33.145 33.145 0 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385.696-130.048 473.216-321.696 1.376-2.496 2.24-4.832 2.848-6.912.256-.608.48-1.184.672-1.728 1.536-4.48 1.856-8.32 1.728-8.32l-.032.032c.608-3.104 1.568-7.744 1.568-13.28zM512 672c-88.224 0-160-71.776-160-160s71.776-160 160-160 160 71.776 160 160-71.776 160-160 160z"></path></svg><span id="ArtalkPV" class="vp-pageview waline-pageview-count" data-path="/UserGuide/latest/API/Programming-Cpp-Native-API.html" data-page-key="/UserGuide/latest/API/Programming-Cpp-Native-API.html">...</span></span><span class="page-reading-time-info" aria-label="Reading Time"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon"><path d="M799.387 122.15c4.402-2.978 7.38-7.897 7.38-13.463v-1.165c0-8.933-7.38-16.312-16.312-16.312H256.33c-8.933 0-16.311 7.38-16.311 16.312v1.165c0 5.825 2.977 10.874 7.637 13.592 4.143 194.44 97.22 354.963 220.201 392.763-122.204 37.542-214.893 196.511-220.2 389.397-4.661 5.049-7.638 11.651-7.638 19.03v5.825h566.49v-5.825c0-7.379-2.849-13.981-7.509-18.9-5.049-193.016-97.867-351.985-220.2-389.527 123.24-37.67 216.446-198.453 220.588-392.892zM531.16 450.445v352.632c117.674 1.553 211.787 40.778 211.787 88.676H304.097c0-48.286 95.149-87.382 213.728-88.676V450.445c-93.077-3.107-167.901-81.297-167.901-177.093 0-8.803 6.99-15.793 15.793-15.793 8.803 0 15.794 6.99 15.794 15.793 0 80.261 63.69 145.635 142.01 145.635s142.011-65.374 142.011-145.635c0-8.803 6.99-15.793 15.794-15.793s15.793 6.99 15.793 15.793c0 95.019-73.789 172.82-165.96 177.093z"></path></svg><span>About 9 min</span><meta property="timeRequired" content="PT9M"></span><!----><!----></div><hr></div><div class="vp-toc-placeholder"><aside id="toc"><!--[--><!----><!--]--><div class="vp-toc-header">On This Page<button type="button" class="print-button" title="Print"><svg xmlns="http://www.w3.org/2000/svg" class="icon print-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="print icon"><path d="M819.2 364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button><div class="arrow end"></div></div><div class="vp-toc-wrapper"><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#dependencies">Dependencies</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#installation-from-source-code">Installation From Source Code</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#install-cpp-dependencies">Install CPP Dependencies</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#compile">Compile</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#compile-q-a">Compile Q&A</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#native-apis">Native APIs</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#initialization">Initialization</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#data-definition-interface-ddl">Data Definition Interface (DDL)</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#data-manipulation-interface-dml">Data Manipulation Interface (DML)</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#iotdb-sql-interface">IoTDB-SQL Interface</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#examples">Examples</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#faq">FAQ</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#on-mac">on Mac</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#on-windows">on Windows</a></li><!----><!--]--></ul></li><!--]--></ul><div class="vp-toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!--[--><!----><!--]--><div class="theme-hope-content"><h1 id="c-native-api" tabindex="-1"><a class="header-anchor" href="#c-native-api"><span>C++ Native API</span></a></h1><h2 id="dependencies" tabindex="-1"><a class="header-anchor" href="#dependencies"><span>Dependencies</span></a></h2><ul><li>Java 8+</li><li>Maven 3.5+</li><li>Flex</li><li>Bison 2.7+</li><li>Boost 1.56+</li><li>OpenSSL 1.0+</li><li>GCC 5.5.0+</li></ul><h2 id="installation-from-source-code" tabindex="-1"><a class="header-anchor" href="#installation-from-source-code"><span>Installation From Source Code</span></a></h2><h3 id="install-cpp-dependencies" tabindex="-1"><a class="header-anchor" href="#install-cpp-dependencies"><span>Install CPP Dependencies</span></a></h3><ul><li><p><strong>MAC</strong></p><ol><li><p>Install Bison ：Bison 2.3 is preinstalled on OSX, but this version is too low.</p><p>When building Thrift with Bison 2.3, the following error would pop out:<br><code>invalid directive: '%code'</code></p><p>For such case, please update <code>Bison</code>:</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code>brew <span class="token function">install</span> bison |
| brew <span class="token function">link</span> bison <span class="token parameter variable">--force</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><p>Then, you need to tell the OS where the new bison is.</p><p>For Bash users:</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code><span class="token builtin class-name">echo</span> <span class="token string">'export PATH="/usr/local/opt/bison/bin:$PATH"'</span> <span class="token operator">>></span> ~/.bash_profile |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>For zsh users:</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code><span class="token builtin class-name">echo</span> <span class="token string">'export PATH="/usr/local/opt/bison/bin:$PATH"'</span> <span class="token operator">>></span> ~/.zshrc |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div></li><li><p>Install Boost ：Please make sure a relative new version of Boost is ready on your machine.<br> If no Boost available, install the latest version of Boost:</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code>brew <span class="token function">install</span> boost |
| brew <span class="token function">link</span> boost |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div></li><li><p>OpenSSL ：Make sure the Openssl libraries has been install on your Mac. The default Openssl include file search path is "/usr/local/opt/openssl/include".</p><p>If Openssl header files can not be found when building Thrift, please add option<code>-Dopenssl.include.dir=""</code>.</p></li></ol></li><li><p><strong>Ubuntu 20</strong></p><p>To install all dependencies, run:</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code><span class="token function">sudo</span> <span class="token function">apt-get</span> <span class="token function">install</span> gcc-9 g++-9 libstdc++-9-dev bison flex libboost-all-dev libssl-dev zlib1g-dev |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div></li><li><p><strong>CentOS 7.x</strong></p><p>Some packages can be installed using Yum:</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code><span class="token function">sudo</span> yum <span class="token function">install</span> bison flex openssl-devel |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>The version of gcc and boost installed by yum is too low, therefore you should compile or download these binary packages by yourself.</p></li><li><p><strong>Windows</strong></p><ol><li><p>Building environment</p><ul><li>Install <code>MS Visual Studio</code>(recommend 2019 version): remember to install Visual Studio C/C++ IDE and compiler(supporting CMake, Clang, MinGW).</li><li>Download and install <a href="https://cmake.org/download/" target="_blank" rel="noopener noreferrer">CMake<span><svg class="external-link-icon" 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"><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="external-link-icon-sr-only">open in new window</span></span></a> .</li></ul></li><li><p>Download and install <code>Flex</code> & <code>Bison</code></p><ul><li>Download <a href="https://sourceforge.net/projects/winflexbison/" target="_blank" rel="noopener noreferrer">Win_Flex_Bison<span><svg class="external-link-icon" 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"><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="external-link-icon-sr-only">open in new window</span></span></a> .</li><li>After downloaded, please rename the executables to <code>flex.exe</code> and <code>bison.exe</code> and add them to "PATH" environment variables.</li></ul></li><li><p>Install <code>Boost</code></p><ul><li>Download <a href="https://www.boost.org/users/download/" target="_blank" rel="noopener noreferrer">Boost<span><svg class="external-link-icon" 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"><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="external-link-icon-sr-only">open in new window</span></span></a> .</li><li>Then build <code>Boost</code> by executing bootstrap.bat and b2.exe.</li></ul></li><li><p>Install <code>OpenSSL</code></p><ul><li>Download and install <a href="http://slproweb.com/products/Win32OpenSSL.html" target="_blank" rel="noopener noreferrer">OpenSSL<span><svg class="external-link-icon" 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"><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="external-link-icon-sr-only">open in new window</span></span></a> .</li></ul></li></ol></li></ul><h3 id="compile" tabindex="-1"><a class="header-anchor" href="#compile"><span>Compile</span></a></h3><p>You can download the source code from:</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code><span class="token function">git</span> clone https://github.com/apache/iotdb.git |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>The default dev branch is the master branch, If you want to use a released version (eg. <code>rel/0.13</code>):</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code><span class="token function">git</span> checkout rel/0.13 |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Under the root path of iotdb:</p><ul><li><p>Mac & Linux</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code>mvn package <span class="token parameter variable">-P</span> compile-cpp <span class="token parameter variable">-pl</span> example/client-cpp-example <span class="token parameter variable">-am</span> <span class="token parameter variable">-DskipTest</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div></li><li><p>Windows</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code>mvn package <span class="token parameter variable">-P</span> compile-cpp <span class="token parameter variable">-pl</span> iotdb-client/client-cpp,iotdb-core/datanode,example/client-cpp-example <span class="token parameter variable">-am</span> <span class="token parameter variable">-Dcmake.generator</span><span class="token operator">=</span><span class="token string">"your cmake generator"</span> <span class="token parameter variable">-Dboost.include.dir</span><span class="token operator">=</span><span class="token variable">${your boost header folder}</span> <span class="token parameter variable">-Dboost.library.dir</span><span class="token operator">=</span><span class="token variable">${your boost lib (stage) folder}</span> <span class="token parameter variable">-DskipTests</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>When building client-cpp project, use <code>-Dcmake.generator=""</code> option to specify a Cmake generator. E.g. <code>-Dcmake.generator="Visual Studio 16 2019"</code> (<code>cmake --help</code> shows a long list of supported Cmake generators.)</li><li>To help CMake find your Boost libraries on windows, you should set <code>-DboostIncludeDir="C:\Program Files (x86)\boost_1_78_0" -DboostLibraryDir="C:\Program Files (x86)\boost_1_78_0\stage\lib"</code> to your mvn build command.<br> ``</li></ul></li></ul><p>If the compilation finishes successfully, the packaged zip file will be placed under <code>client-cpp/target/client-cpp-1.3.0-SNAPSHOT-cpp-${os}.zip</code></p><h3 id="compile-q-a" tabindex="-1"><a class="header-anchor" href="#compile-q-a"><span>Compile Q&A</span></a></h3><p>Q：How to deal with compile error<code>undefined reference to '_libc_sinle_thread'</code>?</p><p>A：</p><ul><li>Delete the test-related compilation and running operations in the pom.xml of C++client. The modified pom is as follows:</li></ul><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code> |
| <?xml version="1.0" encoding="UTF-8"?> |
| <!-- |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| |
| --> |
| <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> |
| <modelVersion>4.0.0</modelVersion> |
| <parent> |
| <groupId>org.apache.iotdb</groupId> |
| <artifactId>iotdb-client</artifactId> |
| <version>1.3.1-SNAPSHOT</version> |
| </parent> |
| <artifactId>client-cpp</artifactId> |
| <packaging>pom</packaging> |
| <name>IoTDB: Client: Client for CPP</name> |
| <description>C++ client</description> |
| <!-- TODO: The tests don't run, if distribution has not been built locally and fails without reasoning --> |
| <properties> |
| <catch2.url>https://alioss.timecho.com/upload/catch.hpp</catch2.url> |
| <cmake.build.type>Release</cmake.build.type> |
| <!-- Default value of cmake root --> |
| <cmake.root.dir>${project.build.directory}/dependency/cmake/</cmake.root.dir> |
| <thrift.exec.absolute.path>${project.build.directory}/thrift/bin/${thrift.executable}</thrift.exec.absolute.path> |
| </properties> |
| <dependencies> |
| <dependency> |
| <groupId>org.apache.iotdb</groupId> |
| <artifactId>iotdb-thrift-commons</artifactId> |
| <version>1.3.1-SNAPSHOT</version> |
| <scope>provided</scope> |
| </dependency> |
| </dependencies> |
| <build> |
| <plugins> |
| <!-- Build and do session integration test --> |
| <plugin> |
| <groupId>org.apache.maven.plugins</groupId> |
| <artifactId>maven-dependency-plugin</artifactId> |
| <executions> |
| <execution> |
| <id>get-thrift</id> |
| <goals> |
| <goal>unpack</goal> |
| </goals> |
| <phase>generate-sources</phase> |
| <configuration> |
| <artifactItems> |
| <artifactItem> |
| <groupId>org.apache.iotdb.tools</groupId> |
| <artifactId>iotdb-tools-thrift</artifactId> |
| <version>${iotdb-tools-thrift.version}</version> |
| <classifier>${os.classifier}</classifier> |
| <type>zip</type> |
| <overWrite>true</overWrite> |
| <outputDirectory>${project.build.directory}/thrift</outputDirectory> |
| </artifactItem> |
| </artifactItems> |
| </configuration> |
| </execution> |
| </executions> |
| </plugin> |
| <plugin> |
| <groupId>com.googlecode.maven-download-plugin</groupId> |
| <artifactId>download-maven-plugin</artifactId> |
| <executions> |
| <execution> |
| <id>get-catch2</id> |
| <goals> |
| <goal>wget</goal> |
| </goals> |
| <phase>generate-resources</phase> |
| <configuration> |
| <url>${catch2.url}</url> |
| <unpack>false</unpack> |
| <outputDirectory>${project.build.directory}/build/test/catch2</outputDirectory> |
| </configuration> |
| </execution> |
| </executions> |
| </plugin> |
| <plugin> |
| <groupId>com.coderplus.maven.plugins</groupId> |
| <artifactId>copy-rename-maven-plugin</artifactId> |
| <executions> |
| <!-- TODO: Do this differently using the artifact downloader --> |
| <execution> |
| <id>copy-protocol-thrift-source</id> |
| <goals> |
| <goal>copy</goal> |
| </goals> |
| <configuration> |
| <fileSets> |
| <fileSet> |
| <sourceFile>../../iotdb-protocol/thrift-datanode/src/main/thrift/client.thrift</sourceFile> |
| <destinationFile>${project.build.directory}/protocols/client.thrift</destinationFile> |
| </fileSet> |
| <fileSet> |
| <sourceFile>../../iotdb-protocol/thrift-commons/src/main/thrift/common.thrift</sourceFile> |
| <destinationFile>${project.build.directory}/protocols/common.thrift</destinationFile> |
| </fileSet> |
| </fileSets> |
| </configuration> |
| </execution> |
| <!-- TODO: Do this differently using the maven-resources-plugin --> |
| <execution> |
| <!-- Copy source file and CmakeLists.txt into target directory --> |
| <id>copy-cmakelist-file</id> |
| <goals> |
| <goal>copy</goal> |
| </goals> |
| <phase>compile</phase> |
| <configuration> |
| <fileSets> |
| <fileSet> |
| <sourceFile>${project.basedir}/src/main/CMakeLists.txt</sourceFile> |
| <destinationFile>${project.build.directory}/build/main/CMakeLists.txt</destinationFile> |
| </fileSet> |
| <fileSet> |
| <sourceFile>${project.basedir}/src/main/Session.h</sourceFile> |
| <destinationFile>${project.build.directory}/build/main/generated-sources-cpp/Session.h</destinationFile> |
| </fileSet> |
| <fileSet> |
| <sourceFile>${project.basedir}/src/main/Session.cpp</sourceFile> |
| <destinationFile>${project.build.directory}/build/main/generated-sources-cpp/Session.cpp</destinationFile> |
| </fileSet> |
| </fileSets> |
| </configuration> |
| </execution> |
| </executions> |
| </plugin> |
| <plugin> |
| <groupId>org.apache.thrift.tools</groupId> |
| <artifactId>maven-thrift-plugin</artifactId> |
| <executions> |
| <execution> |
| <id>generate-thrift-sources-cpp</id> |
| <goals> |
| <goal>compile</goal> |
| </goals> |
| <!-- Move from generate-sources to generate-resources to avoid double executions --> |
| <phase>generate-resources</phase> |
| <configuration> |
| <generator>cpp:no_skeleton</generator> |
| <thriftExecutable>${thrift.exec.absolute.path}</thriftExecutable> |
| <thriftSourceRoot>${project.build.directory}/protocols</thriftSourceRoot> |
| <outputDirectory>${project.build.directory}/build/main/generated-sources-cpp</outputDirectory> |
| </configuration> |
| </execution> |
| </executions> |
| </plugin> |
| <plugin> |
| <groupId>com.googlecode.cmake-maven-project</groupId> |
| <artifactId>cmake-maven-plugin</artifactId> |
| <executions> |
| <!-- Uses a CMake generator to generate the build using the build tool of choice --> |
| <execution> |
| <id>cmake-generate</id> |
| <goals> |
| <goal>generate</goal> |
| </goals> |
| <phase>compile</phase> |
| <configuration> |
| <generator>${cmake.generator}</generator> |
| <sourcePath>${project.build.directory}/build/main</sourcePath> |
| <targetPath>${project.build.directory}/build/main</targetPath> |
| <options> |
| <option>-DBOOST_INCLUDEDIR=${boost.include.dir}</option> |
| </options> |
| </configuration> |
| </execution> |
| <!-- Generate Cmake build directory to compile testing program --> |
| <!-- Actually executes the build --> |
| <execution> |
| <id>cmake-compile</id> |
| <goals> |
| <goal>compile</goal> |
| </goals> |
| <phase>compile</phase> |
| <configuration> |
| <config>${cmake.build.type}</config> |
| <!-- The directory where the "generate" step generated the build configuration --> |
| <projectDirectory>${project.build.directory}/build/main</projectDirectory> |
| </configuration> |
| </execution> |
| <!-- Actually executes the testing compilation --> |
| </executions> |
| </plugin> |
| <!--Package all C++ header files and client library--> |
| <plugin> |
| <groupId>org.apache.maven.plugins</groupId> |
| <artifactId>maven-assembly-plugin</artifactId> |
| <executions> |
| <execution> |
| <id>package-client-cpp</id> |
| <goals> |
| <goal>single</goal> |
| </goals> |
| <phase>package</phase> |
| <configuration> |
| <finalName>${project.artifactId}-${project.version}</finalName> |
| <descriptors> |
| <descriptor>src/assembly/client-cpp.xml</descriptor> |
| </descriptors> |
| </configuration> |
| </execution> |
| </executions> |
| </plugin> |
| </plugins> |
| </build> |
| <profiles> |
| <profile> |
| <id>.os-unix</id> |
| <activation> |
| <os> |
| <name>Linux</name> |
| <family>unix</family> |
| <arch>!aarch64</arch> |
| </os> |
| </activation> |
| <properties> |
| <iotdb.start.script>start-standalone.sh</iotdb.start.script> |
| <iotdb.stop.script>stop-standalone.sh</iotdb.stop.script> |
| <os.suffix>linux</os.suffix> |
| </properties> |
| </profile> |
| <profile> |
| <id>.os-unix-arm</id> |
| <activation> |
| <os> |
| <name>Linux</name> |
| <family>unix</family> |
| <arch>aarch64</arch> |
| </os> |
| </activation> |
| <properties> |
| <iotdb.start.script>start-standalone.sh</iotdb.start.script> |
| <iotdb.stop.script>stop-standalone.sh</iotdb.stop.script> |
| <os.suffix>linux</os.suffix> |
| </properties> |
| </profile> |
| <profile> |
| <id>.os-mac</id> |
| <activation> |
| <os> |
| <family>mac</family> |
| <arch>!aarch64</arch> |
| </os> |
| </activation> |
| <properties> |
| <iotdb.start.script>start-standalone.sh</iotdb.start.script> |
| <iotdb.stop.script>stop-standalone.sh</iotdb.stop.script> |
| <os.suffix>mac</os.suffix> |
| </properties> |
| </profile> |
| <profile> |
| <id>.os-mac-arm</id> |
| <activation> |
| <os> |
| <family>mac</family> |
| <arch>aarch64</arch> |
| </os> |
| </activation> |
| <properties> |
| <iotdb.start.script>start-standalone.sh</iotdb.start.script> |
| <iotdb.stop.script>stop-standalone.sh</iotdb.stop.script> |
| <os.suffix>mac</os.suffix> |
| </properties> |
| </profile> |
| <profile> |
| <id>.os-windows</id> |
| <activation> |
| <os> |
| <family>windows</family> |
| </os> |
| </activation> |
| <properties> |
| <iotdb.start.script>start-standalone.bat</iotdb.start.script> |
| <iotdb.stop.script>stop-standalone.bat</iotdb.stop.script> |
| <os.suffix>win</os.suffix> |
| </properties> |
| </profile> |
| </profiles> |
| </project> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div 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class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Execute <code>mvn clean package -P with-cpp -pl iotdb-client/client-cpp -am -DskipTests</code>，successfully build.</li></ul><h2 id="native-apis" tabindex="-1"><a class="header-anchor" href="#native-apis"><span>Native APIs</span></a></h2><p>Here we show the commonly used interfaces and their parameters in the Native API:</p><h3 id="initialization" tabindex="-1"><a class="header-anchor" href="#initialization"><span>Initialization</span></a></h3><ul><li>Open a Session</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">open</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Open a session, with a parameter to specify whether to enable RPC compression</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">open</span><span class="token punctuation">(</span><span class="token keyword">bool</span> enableRPCCompression<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Notice: this RPC compression status of client must comply with that of IoTDB server</p><ul><li>Close a Session</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="data-definition-interface-ddl" tabindex="-1"><a class="header-anchor" href="#data-definition-interface-ddl"><span>Data Definition Interface (DDL)</span></a></h3><h4 id="database-management" tabindex="-1"><a class="header-anchor" href="#database-management"><span>Database Management</span></a></h4><ul><li>CREATE DATABASE</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">setStorageGroup</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>storageGroupId<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Delete one or several databases</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">deleteStorageGroup</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>storageGroup<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| <span class="token keyword">void</span> <span class="token function">deleteStorageGroups</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>storageGroups<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="timeseries-management" tabindex="-1"><a class="header-anchor" href="#timeseries-management"><span>Timeseries Management</span></a></h4><ul><li>Create one or multiple timeseries</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">createTimeseries</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>path<span class="token punctuation">,</span> TSDataType<span class="token double-colon punctuation">::</span>TSDataType dataType<span class="token punctuation">,</span> TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding encoding<span class="token punctuation">,</span> |
| CompressionType<span class="token double-colon punctuation">::</span>CompressionType compressor<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| <span class="token keyword">void</span> <span class="token function">createMultiTimeseries</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>paths<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">></span> <span class="token operator">&</span>dataTypes<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">></span> <span class="token operator">&</span>encodings<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">></span> <span class="token operator">&</span>compressors<span class="token punctuation">,</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>map<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token punctuation">,</span> std<span class="token double-colon punctuation">::</span>string<span class="token operator">>></span> <span class="token operator">*</span>propsList<span class="token punctuation">,</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>map<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token punctuation">,</span> std<span class="token double-colon punctuation">::</span>string<span class="token operator">>></span> <span class="token operator">*</span>tagsList<span class="token punctuation">,</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>map<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token punctuation">,</span> std<span class="token double-colon punctuation">::</span>string<span class="token operator">>></span> <span class="token operator">*</span>attributesList<span class="token punctuation">,</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">*</span>measurementAliasList<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Create aligned timeseries</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">createAlignedTimeseries</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>deviceId<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>measurements<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">></span> <span class="token operator">&</span>dataTypes<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">></span> <span class="token operator">&</span>encodings<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">></span> <span class="token operator">&</span>compressors<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Delete one or several timeseries</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">deleteTimeseries</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| <span class="token keyword">void</span> <span class="token function">deleteTimeseries</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>paths<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Check whether the specific timeseries exists.</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">bool</span> <span class="token function">checkTimeseriesExists</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h4 id="schema-template" tabindex="-1"><a class="header-anchor" href="#schema-template"><span>Schema Template</span></a></h4><ul><li>Create a schema template</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">createSchemaTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> Template <span class="token operator">&</span>templ<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Set the schema template named <code>templateName</code> at path <code>prefixPath</code>.</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">setSchemaTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>prefix_path<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Unset the schema template</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">unsetSchemaTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>prefix_path<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>After measurement template created, you can edit the template with belowed APIs.</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token comment">// Add aligned measurements to a template</span> |
| <span class="token keyword">void</span> <span class="token function">addAlignedMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>measurements<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">></span> <span class="token operator">&</span>dataTypes<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">></span> <span class="token operator">&</span>encodings<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">></span> <span class="token operator">&</span>compressors<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| <span class="token comment">// Add one aligned measurement to a template</span> |
| <span class="token keyword">void</span> <span class="token function">addAlignedMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>measurement<span class="token punctuation">,</span> |
| TSDataType<span class="token double-colon punctuation">::</span>TSDataType dataType<span class="token punctuation">,</span> |
| TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding encoding<span class="token punctuation">,</span> |
| CompressionType<span class="token double-colon punctuation">::</span>CompressionType compressor<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| <span class="token comment">// Add unaligned measurements to a template</span> |
| <span class="token keyword">void</span> <span class="token function">addUnalignedMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>measurements<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">></span> <span class="token operator">&</span>dataTypes<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">></span> <span class="token operator">&</span>encodings<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">></span> <span class="token operator">&</span>compressors<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| <span class="token comment">// Add one unaligned measurement to a template</span> |
| <span class="token keyword">void</span> <span class="token function">addUnalignedMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>measurement<span class="token punctuation">,</span> |
| TSDataType<span class="token double-colon punctuation">::</span>TSDataType dataType<span class="token punctuation">,</span> |
| TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding encoding<span class="token punctuation">,</span> |
| CompressionType<span class="token double-colon punctuation">::</span>CompressionType compressor<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| <span class="token comment">// Delete a node in template and its children</span> |
| <span class="token keyword">void</span> <span class="token function">deleteNodeInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>You can query measurement templates with these APIS:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token comment">// Return the amount of measurements inside a template</span> |
| <span class="token keyword">int</span> <span class="token function">countMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| <span class="token comment">// Return true if path points to a measurement, otherwise returne false</span> |
| <span class="token keyword">bool</span> <span class="token function">isMeasurementInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| <span class="token comment">// Return true if path exists in template, otherwise return false</span> |
| <span class="token keyword">bool</span> <span class="token function">isPathExistInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| <span class="token comment">// Return all measurements paths inside template</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token function">showMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| <span class="token comment">// Return all measurements paths under the designated patter inside template</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token function">showMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>template_name<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>pattern<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="data-manipulation-interface-dml" tabindex="-1"><a class="header-anchor" href="#data-manipulation-interface-dml"><span>Data Manipulation Interface (DML)</span></a></h3><h4 id="insert" tabindex="-1"><a class="header-anchor" href="#insert"><span>Insert</span></a></h4><blockquote><p>It is recommended to use insertTablet to help improve write efficiency.</p></blockquote><ul><li>Insert a Tablet，which is multiple rows of a device, each row has the same measurements <ul><li>Better Write Performance</li><li>Support null values: fill the null value with any value, and then mark the null value via BitMap</li></ul></li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertTablet</span><span class="token punctuation">(</span>Tablet <span class="token operator">&</span>tablet<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Insert multiple Tablets</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertTablets</span><span class="token punctuation">(</span>std<span class="token double-colon punctuation">::</span>unordered_map<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token punctuation">,</span> Tablet <span class="token operator">*</span><span class="token operator">></span> <span class="token operator">&</span>tablets<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Insert a Record, which contains multiple measurement value of a device at a timestamp</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertRecord</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>deviceId<span class="token punctuation">,</span> <span class="token keyword">int64_t</span> time<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>measurements<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">></span> <span class="token operator">&</span>types<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">></span> <span class="token operator">&</span>values<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Insert multiple Records</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertRecords</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>deviceIds<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span><span class="token keyword">int64_t</span><span class="token operator">></span> <span class="token operator">&</span>times<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">>></span> <span class="token operator">&</span>measurementsList<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">>></span> <span class="token operator">&</span>typesList<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">>></span> <span class="token operator">&</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Insert multiple Records that belong to the same device. With type info the server has no need to do type inference, which leads a better performance</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertRecordsOfOneDevice</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>deviceId<span class="token punctuation">,</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span><span class="token keyword">int64_t</span><span class="token operator">></span> <span class="token operator">&</span>times<span class="token punctuation">,</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">>></span> <span class="token operator">&</span>measurementsList<span class="token punctuation">,</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">>></span> <span class="token operator">&</span>typesList<span class="token punctuation">,</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">>></span> <span class="token operator">&</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="insert-with-type-inference" tabindex="-1"><a class="header-anchor" href="#insert-with-type-inference"><span>Insert with type inference</span></a></h4><p>Without type information, server has to do type inference, which may cost some time.</p><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertRecord</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>deviceId<span class="token punctuation">,</span> <span class="token keyword">int64_t</span> time<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>measurements<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>values<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| |
| <span class="token keyword">void</span> <span class="token function">insertRecords</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>deviceIds<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span><span class="token keyword">int64_t</span><span class="token operator">></span> <span class="token operator">&</span>times<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">>></span> <span class="token operator">&</span>measurementsList<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">>></span> <span class="token operator">&</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| |
| |
| <span class="token keyword">void</span> <span class="token function">insertRecordsOfOneDevice</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>deviceId<span class="token punctuation">,</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span><span class="token keyword">int64_t</span><span class="token operator">></span> <span class="token operator">&</span>times<span class="token punctuation">,</span> |
| std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">>></span> <span class="token operator">&</span>measurementsList<span class="token punctuation">,</span> |
| <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">>></span> <span class="token operator">&</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="insert-data-into-aligned-timeseries" tabindex="-1"><a class="header-anchor" href="#insert-data-into-aligned-timeseries"><span>Insert data into Aligned Timeseries</span></a></h4><p>The Insert of aligned timeseries uses interfaces like <code>insertAlignedXXX</code>, and others are similar to the above interfaces:</p><ul><li>insertAlignedRecord</li><li>insertAlignedRecords</li><li>insertAlignedRecordsOfOneDevice</li><li>insertAlignedTablet</li><li>insertAlignedTablets</li></ul><h4 id="delete" tabindex="-1"><a class="header-anchor" href="#delete"><span>Delete</span></a></h4><ul><li>Delete data before or equal to a timestamp of one or several timeseries</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">deleteData</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>path<span class="token punctuation">,</span> <span class="token keyword">int64_t</span> time<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| <span class="token keyword">void</span> <span class="token function">deleteData</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator"><</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">></span> <span class="token operator">&</span>deviceId<span class="token punctuation">,</span> <span class="token keyword">int64_t</span> time<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="iotdb-sql-interface" tabindex="-1"><a class="header-anchor" href="#iotdb-sql-interface"><span>IoTDB-SQL Interface</span></a></h3><ul><li>Execute query statement</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">executeNonQueryStatement</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>sql<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Execute non query statement</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp" data-title="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">executeNonQueryStatement</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&</span>sql<span class="token punctuation">)</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h2 id="examples" tabindex="-1"><a class="header-anchor" href="#examples"><span>Examples</span></a></h2><p>The sample code of using these interfaces is in:</p><ul><li><code>example/client-cpp-example/src/SessionExample.cpp</code></li><li><code>example/client-cpp-example/src/AlignedTimeseriesSessionExample.cpp</code> （使用对齐时间序列）</li></ul><p>If the compilation finishes successfully, the example project will be placed under <code>example/client-cpp-example/target</code></p><h2 id="faq" tabindex="-1"><a class="header-anchor" href="#faq"><span>FAQ</span></a></h2><h3 id="on-mac" tabindex="-1"><a class="header-anchor" href="#on-mac"><span>on Mac</span></a></h3><p>If errors occur when compiling thrift source code, try to downgrade your xcode-commandline from 12 to 11.5</p><p>see <a href="https://stackoverflow.com/questions/63592445/ld-unsupported-tapi-file-type-tapi-tbd-in-yaml-file/65518087#65518087" target="_blank" rel="noopener noreferrer">https://stackoverflow.com/questions/63592445/ld-unsupported-tapi-file-type-tapi-tbd-in-yaml-file/65518087#65518087<span><svg class="external-link-icon" 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"><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="external-link-icon-sr-only">open in new window</span></span></a></p><h3 id="on-windows" tabindex="-1"><a class="header-anchor" href="#on-windows"><span>on Windows</span></a></h3><p>When Building Thrift and downloading packages via "wget", a possible annoying issue may occur with<br> error message looks like:</p><div class="language-bash line-numbers-mode" data-ext="sh" data-title="sh"><pre class="language-bash"><code>Failed to delete cached <span class="token function">file</span> C:<span class="token punctuation">\</span>Users<span class="token punctuation">\</span>Administrator<span class="token punctuation">\</span>.m2<span class="token punctuation">\</span>repository<span class="token punctuation">\</span>.cache<span class="token punctuation">\</span>download-maven-plugin<span class="token punctuation">\</span>index.ser |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Possible fixes:</p><ul><li>Try to delete the ".m2\repository\.cache" directory and try again.</li><li>Add "<skipCache>true</skipCache>" configuration to the download-maven-plugin maven phase that complains this error.</li></ul></div><!--[--><!----><!--]--><footer class="vp-page-meta"><div class="vp-meta-item edit-link"><a href="https://github.com/apache/iotdb-docs/edit/main/src/UserGuide/latest/API/Programming-Cpp-Native-API.md" rel="noopener noreferrer" target="_blank" aria-label="Found Error? Edit this page on GitHub" class="nav-link vp-meta-label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->Found Error? Edit this page on GitHub<span><svg class="external-link-icon" 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"><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="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="vp-meta-item git-info"><div class="update-time"><span class="vp-meta-label">Last update: </span><!----></div><!----></div></footer><nav class="vp-page-nav"><a class="route-link nav-link prev" href="/UserGuide/latest/API/Programming-Python-Native-API.html" aria-label="Python Native API"><div class="hint"><span class="arrow start"></span>Prev</div><div class="link"><!---->Python Native API</div></a><a class="route-link nav-link next" href="/UserGuide/latest/API/Programming-Go-Native-API.html" aria-label="Go Native API"><div class="hint">Next<span class="arrow end"></span></div><div class="link">Go Native API<!----></div></a></nav><!----><!--[--><!----><!--]--><!--]--></main><!--]--><footer style="padding-bottom:2rem;"><span id="doc-version" style="display:none;">latest</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2024 The Apache Software Foundation.<br> Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>Have a question?</strong> Connect with us on QQ, WeChat, or Slack. <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> now.</p></footer></div><!--]--><!--]--><!--[--><!----><!--]--><!--]--></div> |
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