import{_ as n,c as a,b as e,o as t}from"./app-CftaLYVE.js";const p={};function o(l,s){return t(),a("div",null,s[0]||(s[0]=[e(`<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: &#39;%code&#39;</code></p><p>使用下面 brew 命令更新 bison 版本：</p><div class="language-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line">brew <span class="token function">install</span> bison</span>
<span class="line">brew <span class="token function">link</span> bison <span class="token parameter variable">--force</span></span>
<span class="line"></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-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line"><span class="token builtin class-name">echo</span> <span class="token string">&#39;export PATH=&quot;/usr/local/opt/bison/bin:$PATH&quot;&#39;</span> <span class="token operator">&gt;&gt;</span> ~/.bash_profile</span>
<span class="line"></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-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line">brew <span class="token function">install</span> boost</span>
<span class="line">brew <span class="token function">link</span> boost</span>
<span class="line"></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&quot;/usr/local/opt/openssl/include&quot;</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=&quot;&quot;</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-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line"><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</span>
<span class="line"></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-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line"><span class="token function">sudo</span> yum <span class="token function">install</span> bison flex openssl-devel</span>
<span class="line"></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-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line"><span class="token function">git</span> clone https://github.com/apache/iotdb.git</span>
<span class="line"></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-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line"><span class="token function">git</span> checkout rel/0.13</span>
<span class="line"></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 &amp; Linux</p><div class="language-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line">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></span>
<span class="line"></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-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line">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">&quot;your cmake generator&quot;</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></span>
<span class="line"></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=&quot;&quot;</code>选项来指定使用的生成器名称，例如： <code>-Dcmake.generator=&quot;Visual Studio 16 2019&quot;</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=&quot;C:\\Program Files (x86)\\boost_1_78_0&quot; -DboostLibraryDir=&quot;C:\\Program Files (x86)\\boost_1_78_0\\stage\\lib&quot;</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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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> </span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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> </span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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> </span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</span>storageGroupId<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</span>storageGroup<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"><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">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>storageGroups<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</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></span>
<span class="line">                          CompressionType<span class="token double-colon punctuation">::</span>CompressionType compressor<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">                          </span>
<span class="line"><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">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>paths<span class="token punctuation">,</span></span>
<span class="line">                           <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>dataTypes<span class="token punctuation">,</span></span>
<span class="line">                           <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>encodings<span class="token punctuation">,</span></span>
<span class="line">                           <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>compressors<span class="token punctuation">,</span></span>
<span class="line">                           std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>map<span class="token operator">&lt;</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">&gt;&gt;</span> <span class="token operator">*</span>propsList<span class="token punctuation">,</span></span>
<span class="line">                           std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>map<span class="token operator">&lt;</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">&gt;&gt;</span> <span class="token operator">*</span>tagsList<span class="token punctuation">,</span></span>
<span class="line">                           std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>map<span class="token operator">&lt;</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">&gt;&gt;</span> <span class="token operator">*</span>attributesList<span class="token punctuation">,</span></span>
<span class="line">                           std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">*</span>measurementAliasList<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</span>deviceId<span class="token punctuation">,</span></span>
<span class="line">                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span></span>
<span class="line">                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>dataTypes<span class="token punctuation">,</span></span>
<span class="line">                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>encodings<span class="token punctuation">,</span></span>
<span class="line">                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>compressors<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"><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">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>paths<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</span>templ<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</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">&amp;</span>prefix_path<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</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">&amp;</span>template_name<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><span class="token comment">// 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 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">&amp;</span>template_name<span class="token punctuation">,</span></span>
<span class="line">                                      <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span></span>
<span class="line">                                      <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>dataTypes<span class="token punctuation">,</span></span>
<span class="line">                                      <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>encodings<span class="token punctuation">,</span></span>
<span class="line">                                      <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>compressors<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"><span class="token comment">// 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 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">&amp;</span>template_name<span class="token punctuation">,</span></span>
<span class="line">                                      <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>measurement<span class="token punctuation">,</span></span>
<span class="line">                                      TSDataType<span class="token double-colon punctuation">::</span>TSDataType dataType<span class="token punctuation">,</span></span>
<span class="line">                                      TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding encoding<span class="token punctuation">,</span></span>
<span class="line">                                      CompressionType<span class="token double-colon punctuation">::</span>CompressionType compressor<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"><span class="token comment">// 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 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">&amp;</span>template_name<span class="token punctuation">,</span></span>
<span class="line">                                        <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span></span>
<span class="line">                                        <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>dataTypes<span class="token punctuation">,</span></span>
<span class="line">                                        <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>encodings<span class="token punctuation">,</span></span>
<span class="line">                                        <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>compressors<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"><span class="token comment">// 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 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">&amp;</span>template_name<span class="token punctuation">,</span></span>
<span class="line">                                        <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>measurement<span class="token punctuation">,</span></span>
<span class="line">                                        TSDataType<span class="token double-colon punctuation">::</span>TSDataType dataType<span class="token punctuation">,</span></span>
<span class="line">                                        TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding encoding<span class="token punctuation">,</span></span>
<span class="line">                                        CompressionType<span class="token double-colon punctuation">::</span>CompressionType compressor<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"><span class="token comment">// 从指定模板中删除一个节点及其子树</span></span>
<span class="line"><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">&amp;</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">&amp;</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><span class="token comment">// 查询返回目前模板中所有物理量的数量</span></span>
<span class="line"><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">&amp;</span>template_name<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"><span class="token comment">// 检查模板内指定路径是否为物理量</span></span>
<span class="line"><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">&amp;</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">&amp;</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"><span class="token comment">// 检查在指定模板内是否存在某路径</span></span>
<span class="line"><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">&amp;</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">&amp;</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"><span class="token comment">// 返回指定模板内所有物理量的路径</span></span>
<span class="line">std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</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">&amp;</span>template_name<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"><span class="token comment">// 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">std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</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">&amp;</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">&amp;</span>pattern<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><span class="token keyword">void</span> <span class="token function">insertTablet</span><span class="token punctuation">(</span>Tablet <span class="token operator">&amp;</span>tablet<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&lt;</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">&gt;</span> <span class="token operator">&amp;</span>tablets<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</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">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span></span>
<span class="line">                  <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</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">&lt;</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>values<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>deviceIds<span class="token punctuation">,</span></span>
<span class="line">                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span></span>
<span class="line">                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span></span>
<span class="line">                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>typesList<span class="token punctuation">,</span></span>
<span class="line">                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</span>deviceId<span class="token punctuation">,</span></span>
<span class="line">                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span></span>
<span class="line">                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span></span>
<span class="line">                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>typesList<span class="token punctuation">,</span></span>
<span class="line">                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</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">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span></span>
<span class="line">                  <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>values<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"></span>
<span class="line"><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">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>deviceIds<span class="token punctuation">,</span></span>
<span class="line">                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span></span>
<span class="line">                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span></span>
<span class="line">                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"></span>
<span class="line"><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">&amp;</span>deviceId<span class="token punctuation">,</span></span>
<span class="line">                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span></span>
<span class="line">                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span></span>
<span class="line">                              <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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点前或这个时间点的数据</li></ul><div class="language-cpp line-numbers-mode" data-highlighter="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</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>
<span class="line"><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">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</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></span>
<span class="line"></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><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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line">unique_ptr<span class="token operator">&lt;</span>SessionDataSet<span class="token operator">&gt;</span> <span class="token function">executeQueryStatement</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">&amp;</span>sql<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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="prismjs" data-ext="cpp" data-title="cpp"><pre><code><span class="line"><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">&amp;</span>sql<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></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-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">Failed to delete cached file C:\\Users\\Administrator\\.m2\\repository\\.cache\\download-maven-plugin\\index.ser</span>
<span class="line"></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 &quot;.m2\\repository\\.cache&quot; 目录并重试。</li><li>在添加 pom 文件对应的 download-maven-plugin 中添加 &quot;&lt;skipCache&gt;true&lt;/skipCache&gt;&quot;</li></ul></li></ol>`,86)]))}const i=n(p,[["render",o],["__file","Programming-Cpp-Native-API.html.vue"]]),r=JSON.parse('{"path":"/zh/UserGuide/V1.2.x/API/Programming-Cpp-Native-API.html","title":"C++ 原生接口","lang":"zh-CN","frontmatter":{"description":"C++ 原生接口 依赖 Java 8+ Maven 3.5+ Flex Bison 2.7+ Boost 1.56+ OpenSSL 1.0+ GCC 5.5.0+ 安装 安装相关依赖 MAC 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。 使用 Bison 2.3 版本会报以下错误： ...","head":[["link",{"rel":"alternate","hreflang":"en-us","href":"https://iotdb.apache.org/UserGuide/V1.2.x/API/Programming-Cpp-Native-API.html"}],["meta",{"property":"og:url","content":"https://iotdb.apache.org/zh/UserGuide/V1.2.x/API/Programming-Cpp-Native-API.html"}],["meta",{"property":"og:site_name","content":"IoTDB Website"}],["meta",{"property":"og:title","content":"C++ 原生接口"}],["meta",{"property":"og:description","content":"C++ 原生接口 依赖 Java 8+ Maven 3.5+ Flex Bison 2.7+ Boost 1.56+ OpenSSL 1.0+ GCC 5.5.0+ 安装 安装相关依赖 MAC 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。 使用 Bison 2.3 版本会报以下错误： ..."}],["meta",{"property":"og:type","content":"article"}],["meta",{"property":"og:locale","content":"zh-CN"}],["meta",{"property":"og:locale:alternate","content":"en-US"}],["meta",{"property":"og:updated_time","content":"2023-12-15T13:16:16.000Z"}],["meta",{"property":"article:modified_time","content":"2023-12-15T13:16:16.000Z"}],["script",{"type":"application/ld+json"},"{\\"@context\\":\\"https://schema.org\\",\\"@type\\":\\"Article\\",\\"headline\\":\\"C++ 原生接口\\",\\"image\\":[\\"\\"],\\"dateModified\\":\\"2023-12-15T13:16:16.000Z\\",\\"author\\":[]}"]]},"headers":[{"level":2,"title":"依赖","slug":"依赖","link":"#依赖","children":[]},{"level":2,"title":"安装","slug":"安装","link":"#安装","children":[{"level":3,"title":"安装相关依赖","slug":"安装相关依赖","link":"#安装相关依赖","children":[]},{"level":3,"title":"执行编译","slug":"执行编译","link":"#执行编译","children":[]}]},{"level":2,"title":"基本接口说明","slug":"基本接口说明","link":"#基本接口说明","children":[{"level":3,"title":"初始化","slug":"初始化","link":"#初始化","children":[]},{"level":3,"title":"数据定义接口（DDL）","slug":"数据定义接口-ddl","link":"#数据定义接口-ddl","children":[]},{"level":3,"title":"数据操作接口（DML）","slug":"数据操作接口-dml","link":"#数据操作接口-dml","children":[]},{"level":3,"title":"IoTDB-SQL 接口","slug":"iotdb-sql-接口","link":"#iotdb-sql-接口","children":[]}]},{"level":2,"title":"示例代码","slug":"示例代码","link":"#示例代码","children":[]},{"level":2,"title":"FAQ","slug":"faq","link":"#faq","children":[{"level":3,"title":"Thrift 编译相关问题","slug":"thrift-编译相关问题","link":"#thrift-编译相关问题","children":[]}]}],"git":{"createdTime":1688958677000,"updatedTime":1702646176000,"contributors":[{"name":"Christofer Dutz","email":"christofer.dutz@c-ware.de","commits":1},{"name":"CritasWang","email":"critas@outlook.com","commits":1},{"name":"Lei","email":"33376433+LeiRui@users.noreply.github.com","commits":1},{"name":"wanghui42","email":"105700158+wanghui42@users.noreply.github.com","commits":1}]},"readingTime":{"minutes":7.79,"words":2338},"filePathRelative":"zh/UserGuide/V1.2.x/API/Programming-Cpp-Native-API.md","localizedDate":"2023年7月10日","autoDesc":true}');export{i as comp,r as data};