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clickable" type="button"><!----><span class="vp-sidebar-title">系统集成</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">SQL手册</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">FAQ</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">附录</span><span class="vp-arrow end"></span></button><!----></section></li></ul><!----></aside><!--[--><main id="main-content" class="vp-page"><!--[--><!----><!----><nav class="vp-breadcrumb disable"></nav><div class="vp-page-title"><h1><!---->C++ 原生接口</h1><div class="page-info"><!----><!----><span class="page-date-info" aria-label="写作日期📅" data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon calendar-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="calendar icon" name="calendar"><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 01-33.473-33.473c0-18.752 14.72-33.473 33.473-33.473h736.687c18.752 0 33.472 14.72 33.472 33.473a33.145 33.145 0 01-33.472 33.473z"></path></svg><span data-allow-mismatch="text">2023/7/10</span><meta property="datePublished" content="2023-07-10T03:11:17.000Z"></span><!----><span class="page-reading-time-info" aria-label="阅读时间⌛" data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon" name="timer"><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>大约 8 分钟</span><meta property="timeRequired" content="PT8M"></span><!----><!----></div><hr></div><!----><div class="" vp-content><!----><div id="markdown-content"><h1 id="c-原生接口" tabindex="-1"><a class="header-anchor" href="#c-原生接口"><span>C++ 原生接口</span></a></h1><h2 id="依赖" tabindex="-1"><a class="header-anchor" href="#依赖"><span>依赖</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="安装" tabindex="-1"><a class="header-anchor" href="#安装"><span>安装</span></a></h2><h3 id="安装相关依赖" tabindex="-1"><a class="header-anchor" href="#安装相关依赖"><span>安装相关依赖</span></a></h3><ul><li><p><strong>MAC</strong></p><ol><li><p>安装 Bison ：Mac 环境下预安装了 Bison 2.3 版本，但该版本过低不能够用来编译 Thrift。</p><p>使用 Bison 2.3 版本会报以下错误：<br><code>invalid directive: '%code'</code></p><p>使用下面 brew 命令更新 bison 版本：</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-shell"><span class="line"><span style="color:#61AFEF;">brew</span><span style="color:#98C379;"> install</span><span style="color:#98C379;"> bison</span></span> |
| <span class="line"><span style="color:#61AFEF;">brew</span><span style="color:#98C379;"> link</span><span style="color:#98C379;"> bison</span><span style="color:#D19A66;"> --force</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><p>添加环境变量：</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-shell"><span class="line"><span style="color:#56B6C2;">echo</span><span style="color:#98C379;"> 'export PATH="/usr/local/opt/bison/bin:$PATH"'</span><span style="color:#ABB2BF;"> >> </span><span style="color:#98C379;">~/.bash_profile</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div></li><li><p>安装 Boost ：确保安装较新的 Boost 版本。</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-shell"><span class="line"><span style="color:#61AFEF;">brew</span><span style="color:#98C379;"> install</span><span style="color:#98C379;"> boost</span></span> |
| <span class="line"><span style="color:#61AFEF;">brew</span><span style="color:#98C379;"> link</span><span style="color:#98C379;"> boost</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div></li><li><p>检查 OpenSSL ：确保 openssl 库已安装，默认的 openssl 头文件路径为"/usr/local/opt/openssl/include"</p><p>如果在编译过程中出现找不到 openssl 的错误，尝试添加<code>-Dopenssl.include.dir=""</code></p></li></ol></li><li><p><strong>Ubuntu 20</strong></p><p>使用以下命令安装所有依赖：</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-shell"><span class="line"><span style="color:#61AFEF;">sudo</span><span style="color:#98C379;"> apt-get</span><span style="color:#98C379;"> install</span><span style="color:#98C379;"> gcc-9</span><span style="color:#98C379;"> g++-9</span><span style="color:#98C379;"> libstdc++-9-dev</span><span style="color:#98C379;"> bison</span><span style="color:#98C379;"> flex</span><span style="color:#98C379;"> libboost-all-dev</span><span style="color:#98C379;"> libssl-dev</span><span style="color:#98C379;"> zlib1g-dev</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div></li><li><p><strong>CentOS 7.x</strong></p><p>使用 yum 命令安装部分依赖。</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-shell"><span class="line"><span style="color:#61AFEF;">sudo</span><span style="color:#98C379;"> yum</span><span style="color:#98C379;"> install</span><span style="color:#98C379;"> bison</span><span style="color:#98C379;"> flex</span><span style="color:#98C379;"> openssl-devel</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>使用 yum 安装的 GCC、Boost 版本过低，在编译时会报错，需自行安装或升级。</p></li><li><p><strong>Windows</strong></p><ol><li><p>构建编译环境</p><ul><li>安装 MS Visual Studio（推荐安装 2019 版本）：安装时需要勾选 Visual Studio C/C++ IDE and compiler(supporting CMake, Clang, MinGW)。</li><li>下载安装 <a href="https://cmake.org/download/" target="_blank" rel="noopener noreferrer">CMake</a> 。</li></ul></li><li><p>下载安装 Flex、Bison</p><ul><li>下载 <a href="https://sourceforge.net/projects/winflexbison/" target="_blank" rel="noopener noreferrer">Win_Flex_Bison</a> 。</li><li>下载后需要将可执行文件重命名为 flex.exe 和 bison.exe 以保证编译时能够被找到，添加可执行文件的目录到 PATH 环境变量中。</li></ul></li><li><p>安装 Boost</p><ul><li>下载 <a href="https://www.boost.org/users/download/" target="_blank" rel="noopener noreferrer">Boost</a> 。</li><li>本地编译 Boost ：依次执行 bootstrap.bat 和 b2.exe 。</li></ul></li><li><p>安装 OpenSSL</p><ul><li>下载安装 <a href="http://slproweb.com/products/Win32OpenSSL.html" target="_blank" rel="noopener noreferrer">OpenSSL</a> 。</li></ul></li></ol></li></ul><h3 id="执行编译" tabindex="-1"><a class="header-anchor" href="#执行编译"><span>执行编译</span></a></h3><p>从 git 克隆源代码:</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-shell"><span class="line"><span style="color:#61AFEF;">git</span><span style="color:#98C379;"> clone</span><span style="color:#98C379;"> https://github.com/apache/iotdb.git</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>默认的主分支是master分支，如果你想使用某个发布版本，请切换分支 (如 0.13 版本):</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-shell"><span class="line"><span style="color:#61AFEF;">git</span><span style="color:#98C379;"> checkout</span><span style="color:#98C379;"> rel/0.13</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>在 IoTDB 根目录下执行 maven 编译:</p><ul><li><p>Mac & Linux</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-shell"><span class="line"><span style="color:#61AFEF;">mvn</span><span style="color:#98C379;"> package</span><span style="color:#D19A66;"> -P</span><span style="color:#98C379;"> compile-cpp</span><span style="color:#D19A66;"> -pl</span><span style="color:#98C379;"> example/client-cpp-example</span><span style="color:#D19A66;"> -am</span><span style="color:#D19A66;"> -DskipTest</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div></li><li><p>Windows</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-shell"><span class="line"><span style="color:#61AFEF;">mvn</span><span style="color:#98C379;"> package</span><span style="color:#D19A66;"> -P</span><span style="color:#98C379;"> compile-cpp</span><span style="color:#D19A66;"> -pl</span><span style="color:#98C379;"> iotdb-client/client-cpp,iotdb-core/datanode,example/client-cpp-example</span><span style="color:#D19A66;"> -am</span><span style="color:#D19A66;"> -Dcmake.generator=</span><span style="color:#98C379;">"your cmake generator"</span><span style="color:#D19A66;"> -Dboost.include.dir=${</span><span style="color:#E06C75;">your</span><span style="color:#E06C75;"> boost</span><span style="color:#E06C75;"> header</span><span style="color:#E06C75;"> folder</span><span style="color:#D19A66;">}</span><span style="color:#D19A66;"> -Dboost.library.dir=${</span><span style="color:#E06C75;">your</span><span style="color:#E06C75;"> boost</span><span style="color:#E06C75;"> lib</span><span style="color:#D19A66;"> (</span><span style="color:#E06C75;">stage</span><span style="color:#D19A66;">) </span><span style="color:#E06C75;">folder</span><span style="color:#D19A66;">}</span><span style="color:#D19A66;"> -DskipTests</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>CMake 根据不同编译平台使用不同的生成器，需添加<code>-Dcmake.generator=""</code>选项来指定使用的生成器名称，例如： <code>-Dcmake.generator="Visual Studio 16 2019"</code>。（通过<code>cmake --help</code>命令可以查看 CMake 支持的生成器列表）</li><li>为了帮助 CMake 找到本地安装好的 Boost，在编译命令中需添加相关参数，例如：<code>-DboostIncludeDir="C:\Program Files (x86)\boost_1_78_0" -DboostLibraryDir="C:\Program Files (x86)\boost_1_78_0\stage\lib"</code></li></ul></li></ul><p>编译成功后，打包好的 zip 文件位于 <code>client-cpp/target/client-cpp-1.3.0-SNAPSHOT-cpp-${os}.zip</code></p><h2 id="基本接口说明" tabindex="-1"><a class="header-anchor" href="#基本接口说明"><span>基本接口说明</span></a></h2><p>下面将给出 Session 接口的简要介绍和原型定义：</p><h3 id="初始化" tabindex="-1"><a class="header-anchor" href="#初始化"><span>初始化</span></a></h3><ul><li>开启 Session</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> open</span><span style="color:#ABB2BF;">();</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>开启 Session，并决定是否开启 RPC 压缩</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> open</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">bool</span><span style="color:#E06C75;font-style:italic;"> enableRPCCompression</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>注意: 客户端的 RPC 压缩开启状态需和服务端一致。</p><ul><li>关闭 Session</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> close</span><span style="color:#ABB2BF;">();</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="数据定义接口-ddl" tabindex="-1"><a class="header-anchor" href="#数据定义接口-ddl"><span>数据定义接口（DDL）</span></a></h3><h4 id="database-管理" tabindex="-1"><a class="header-anchor" href="#database-管理"><span>Database 管理</span></a></h4><ul><li>设置 database</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> setStorageGroup</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">storageGroupId</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>删除单个或多个 database</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> deleteStorageGroup</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">storageGroup</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> deleteStorageGroups</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">storageGroups</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="时间序列管理" tabindex="-1"><a class="header-anchor" href="#时间序列管理"><span>时间序列管理</span></a></h4><ul><li>创建单个或多个非对齐时间序列</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> createTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">path</span><span style="color:#ABB2BF;">, TSDataType::</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#E06C75;font-style:italic;"> dataType</span><span style="color:#ABB2BF;">, TSEncoding::</span><span style="color:#E5C07B;">TSEncoding</span><span style="color:#E06C75;font-style:italic;"> encoding</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> CompressionType::</span><span style="color:#E5C07B;">CompressionType</span><span style="color:#E06C75;font-style:italic;"> compressor</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> createMultiTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">paths</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSDataType::</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">dataTypes</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSEncoding::</span><span style="color:#E5C07B;">TSEncoding</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">encodings</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><CompressionType::</span><span style="color:#E5C07B;">CompressionType</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">compressors</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">map</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">, std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">*</span><span style="color:#E06C75;font-style:italic;">propsList</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">map</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">, std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">*</span><span style="color:#E06C75;font-style:italic;">tagsList</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">map</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">, std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">*</span><span style="color:#E06C75;font-style:italic;">attributesList</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">*</span><span style="color:#E06C75;font-style:italic;">measurementAliasList</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>创建对齐时间序列</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> createAlignedTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">deviceId</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">measurements</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSDataType::</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">dataTypes</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSEncoding::</span><span style="color:#E5C07B;">TSEncoding</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">encodings</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><CompressionType::</span><span style="color:#E5C07B;">CompressionType</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">compressors</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>删除一个或多个时间序列</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> deleteTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">path</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> deleteTimeseries</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">paths</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>检查时间序列是否存在</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">bool</span><span style="color:#61AFEF;"> checkTimeseriesExists</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">path</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="元数据模版" tabindex="-1"><a class="header-anchor" href="#元数据模版"><span>元数据模版</span></a></h4><ul><li>创建元数据模板</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> createSchemaTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#E5C07B;"> Template</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">templ</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>挂载元数据模板</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> setSchemaTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">prefix_path</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>请注意，如果一个子树中有多个孩子节点需要使用模板，可以在其共同父母节点上使用 setSchemaTemplate 。而只有在已有数据点插入模板对应的物理量时，模板才会被设置为激活状态，进而被 show timeseries 等查询检测到。</p><ul><li>卸载元数据模板</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> unsetSchemaTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">prefix_path</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>注意：目前不支持从曾经在<code>prefixPath</code>路径及其后代节点使用模板插入数据后（即使数据已被删除）卸载模板。</p><ul><li>在创建概念元数据模板以后，还可以通过以下接口增加或删除模板内的物理量。请注意，已经挂载的模板不能删除内部的物理量。</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#7F848E;font-style:italic;">// 为指定模板新增一组对齐的物理量，若其父节点在模板中已经存在，且不要求对齐，则报错</span></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> addAlignedMeasurementsInTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">measurements</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSDataType::</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">dataTypes</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSEncoding::</span><span style="color:#E5C07B;">TSEncoding</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">encodings</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><CompressionType::</span><span style="color:#E5C07B;">CompressionType</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">compressors</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// 为指定模板新增一个对齐物理量, 若其父节点在模板中已经存在，且不要求对齐，则报错</span></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> addAlignedMeasurementsInTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">measurement</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> TSDataType::</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#E06C75;font-style:italic;"> dataType</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> TSEncoding::</span><span style="color:#E5C07B;">TSEncoding</span><span style="color:#E06C75;font-style:italic;"> encoding</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> CompressionType::</span><span style="color:#E5C07B;">CompressionType</span><span style="color:#E06C75;font-style:italic;"> compressor</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// 为指定模板新增一个不对齐物理量, 若其父节在模板中已经存在，且要求对齐，则报错</span></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> addUnalignedMeasurementsInTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">measurements</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSDataType::</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">dataTypes</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSEncoding::</span><span style="color:#E5C07B;">TSEncoding</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">encodings</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><CompressionType::</span><span style="color:#E5C07B;">CompressionType</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">compressors</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// 为指定模板新增一组不对齐的物理量, 若其父节在模板中已经存在，且要求对齐，则报错</span></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> addUnalignedMeasurementsInTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">measurement</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> TSDataType::</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#E06C75;font-style:italic;"> dataType</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> TSEncoding::</span><span style="color:#E5C07B;">TSEncoding</span><span style="color:#E06C75;font-style:italic;"> encoding</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> CompressionType::</span><span style="color:#E5C07B;">CompressionType</span><span style="color:#E06C75;font-style:italic;"> compressor</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// 从指定模板中删除一个节点及其子树</span></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> deleteNodeInTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">path</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>对于已经创建的元数据模板，还可以通过以下接口查询模板信息：</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#7F848E;font-style:italic;">// 查询返回目前模板中所有物理量的数量</span></span> |
| <span class="line"><span style="color:#C678DD;">int</span><span style="color:#61AFEF;"> countMeasurementsInTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// 检查模板内指定路径是否为物理量</span></span> |
| <span class="line"><span style="color:#C678DD;">bool</span><span style="color:#61AFEF;"> isMeasurementInTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">path</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// 检查在指定模板内是否存在某路径</span></span> |
| <span class="line"><span style="color:#C678DD;">bool</span><span style="color:#61AFEF;"> isPathExistInTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">path</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// 返回指定模板内所有物理量的路径</span></span> |
| <span class="line"><span style="color:#ABB2BF;">std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#61AFEF;">showMeasurementsInTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">// 返回指定模板内某前缀路径下的所有物理量的路径</span></span> |
| <span class="line"><span style="color:#ABB2BF;">std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#61AFEF;">showMeasurementsInTemplate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">template_name</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">pattern</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="数据操作接口-dml" tabindex="-1"><a class="header-anchor" href="#数据操作接口-dml"><span>数据操作接口（DML）</span></a></h3><h4 id="数据写入" tabindex="-1"><a class="header-anchor" href="#数据写入"><span>数据写入</span></a></h4><blockquote><p>推荐使用 insertTablet 帮助提高写入效率。</p></blockquote><ul><li>插入一个 Tablet，Tablet 是一个设备若干行数据块，每一行的列都相同。 <ul><li>写入效率高。</li><li>支持写入空值：空值处可以填入任意值，然后通过 BitMap 标记空值。</li></ul></li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> insertTablet</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">Tablet</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">tablet</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>插入多个 Tablet</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> insertTablets</span><span style="color:#ABB2BF;">(std::</span><span style="color:#E5C07B;">unordered_map</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">Tablet</span><span style="color:#C678DD;"> *</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">tablets</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>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</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> insertRecord</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">deviceId</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int64_t</span><span style="color:#E06C75;font-style:italic;"> time</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">measurements</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSDataType::</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">types</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><</span><span style="color:#C678DD;">char</span><span style="color:#C678DD;"> *</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">values</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>插入多个 Record</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> insertRecords</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">deviceIds</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><</span><span style="color:#C678DD;">int64_t</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">times</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">measurementsList</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSDataType::</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">typesList</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><</span><span style="color:#C678DD;">char</span><span style="color:#C678DD;"> *</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">valuesList</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>插入同属于一个 device 的多个 Record</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> insertRecordsOfOneDevice</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">deviceId</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><</span><span style="color:#C678DD;">int64_t</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">times</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">measurementsList</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><TSDataType::</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">typesList</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><</span><span style="color:#C678DD;">char</span><span style="color:#C678DD;"> *</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">valuesList</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="带有类型推断的写入" tabindex="-1"><a class="header-anchor" href="#带有类型推断的写入"><span>带有类型推断的写入</span></a></h4><p>服务器需要做类型推断，可能会有额外耗时，速度较无需类型推断的写入慢。</p><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> insertRecord</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">deviceId</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int64_t</span><span style="color:#E06C75;font-style:italic;"> time</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">measurements</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">values</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> insertRecords</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">deviceIds</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><</span><span style="color:#C678DD;">int64_t</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">times</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">measurementsList</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">valuesList</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> insertRecordsOfOneDevice</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">deviceId</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><</span><span style="color:#C678DD;">int64_t</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">times</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">measurementsList</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">>> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">valuesList</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="对齐时间序列写入" tabindex="-1"><a class="header-anchor" href="#对齐时间序列写入"><span>对齐时间序列写入</span></a></h4><p>对齐时间序列的写入使用 insertAlignedXXX 接口，其余与上述接口类似：</p><ul><li>insertAlignedRecord</li><li>insertAlignedRecords</li><li>insertAlignedRecordsOfOneDevice</li><li>insertAlignedTablet</li><li>insertAlignedTablets</li></ul><h4 id="数据删除" tabindex="-1"><a class="header-anchor" href="#数据删除"><span>数据删除</span></a></h4><ul><li>删除一个或多个时间序列在某个时间范围的数据</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> deleteData</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">path</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int64_t</span><span style="color:#E06C75;font-style:italic;"> endTime</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> deleteData</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">paths</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int64_t</span><span style="color:#E06C75;font-style:italic;"> endTime</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> deleteData</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">vector</span><span style="color:#ABB2BF;"><std::</span><span style="color:#E5C07B;">string</span><span style="color:#ABB2BF;">> </span><span style="color:#C678DD;">&</span><span style="color:#E06C75;font-style:italic;">paths</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int64_t</span><span style="color:#E06C75;font-style:italic;"> startTime</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int64_t</span><span style="color:#E06C75;font-style:italic;"> endTime</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="iotdb-sql-接口" tabindex="-1"><a class="header-anchor" href="#iotdb-sql-接口"><span>IoTDB-SQL 接口</span></a></h3><ul><li>执行查询语句</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#E5C07B;">unique_ptr</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">SessionDataSet</span><span style="color:#ABB2BF;">> </span><span style="color:#61AFEF;">executeQueryStatement</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">sql</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>执行非查询语句</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="shiki" data-ext="cpp" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-cpp"><span class="line"><span style="color:#C678DD;">void</span><span style="color:#61AFEF;"> executeNonQueryStatement</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">const</span><span style="color:#ABB2BF;"> std::</span><span style="color:#E5C07B;">string</span><span style="color:#C678DD;"> &</span><span style="color:#E06C75;font-style:italic;">sql</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="示例代码" tabindex="-1"><a class="header-anchor" href="#示例代码"><span>示例代码</span></a></h2><p>示例工程源代码：</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>编译成功后，示例代码工程位于 <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="thrift-编译相关问题" tabindex="-1"><a class="header-anchor" href="#thrift-编译相关问题"><span>Thrift 编译相关问题</span></a></h3><ol><li><p>MAC：本地 Maven 编译 Thrift 时如出现以下链接的问题，可以尝试将 xcode-commandline 版本从 12 降低到 11.5<br><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</a></p></li><li><p>Windows：Maven 编译 Thrift 时需要使用 wget 下载远端文件，可能出现以下报错：</p><div class="language- line-numbers-mode" data-highlighter="shiki" data-ext="" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-"><span class="line"><span>Failed to delete cached file C:\Users\Administrator\.m2\repository\.cache\download-maven-plugin\index.ser</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>解决方法：</p><ul><li>尝试删除 ".m2\repository\.cache" 目录并重试。</li><li>在添加 pom 文件对应的 download-maven-plugin 中添加 "<skipCache>true</skipCache>"</li></ul></li></ol></div><!----><!----><!----></div><footer class="vp-page-meta"><div class="vp-meta-item edit-link"><a class="auto-link external-link vp-meta-label" href="https://github.com/apache/iotdb-docs/edit/main/src/zh/UserGuide/V1.2.x/API/Programming-Cpp-Native-API.md" aria-label="发现错误？在 GitHub 上编辑此页" rel="noopener noreferrer" target="_blank"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 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