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class="content" data-v-5a9131ba><div class="content-container" data-v-5a9131ba><!--[--><!--]--><main class="main" data-v-5a9131ba><div style="position:relative;" class="vp-doc _tmagic-editor_docs_runtime-api_data-source_utils" data-v-5a9131ba><div><h1 id="工具函数" tabindex="-1">工具函数 <a class="header-anchor" href="#工具函数" aria-label="Permalink to “工具函数”">​</a></h1><p><code>@tmagic/data-source</code> 导出的工具函数。</p><h2 id="createdatasourcemanager" tabindex="-1">createDataSourceManager <a class="header-anchor" href="#createdatasourcemanager" aria-label="Permalink to “createDataSourceManager”">​</a></h2><ul><li><p><strong>参数:</strong></p><ul><li><code>{TMagicApp} app</code> 应用实例</li><li><code>{boolean} useMock</code> 是否使用 Mock 数据(可选)</li><li><code>{DataSourceManagerData} initialData</code> 初始数据(可选)</li></ul></li><li><p><strong>返回:</strong></p><ul><li><code>{DataSourceManager | undefined}</code> 数据源管理器实例;当 <code>app.dsl?.dataSources</code> 缺省时返回 <code>undefined</code></li></ul></li><li><p><strong>详情:</strong></p><p>创建数据源管理器的工厂函数,会自动设置数据变化监听并在 <code>change</code> 事件中向 <code>update-data</code> 转发受影响的节点。</p></li><li><p><strong>示例:</strong></p></li></ul><div class="language-typescript"><button title="Copy code" data-copied="Copied" class="copy"></button><span class="lang">typescript</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { createDataSourceManager } </span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;@tmagic/data-source&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">const</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> dsManager</span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> createDataSourceManager</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(app, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">false</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, initialData);</span></span></code></pre></div><h2 id="compiledcondition" tabindex="-1">compiledCondition <a class="header-anchor" href="#compiledcondition" aria-label="Permalink to “compiledCondition”">​</a></h2><ul><li><p><strong>参数:</strong></p><ul><li><code>{DisplayCondItem[]} conds</code> 条件项数组(同一组条件 AND 关系)</li><li><code>{DataSourceManagerData} data</code> 数据上下文</li></ul></li><li><p><strong>返回:</strong></p><ul><li><code>{boolean}</code> 条件是否满足</li></ul></li><li><p><strong>详情:</strong></p><p>编译一组显示条件,按 AND 语义返回是否全部满足。</p></li><li><p><strong>示例:</strong></p></li></ul><div class="language-typescript"><button title="Copy code" data-copied="Copied" class="copy"></button><span class="lang">typescript</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { compiledCondition } </span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;@tmagic/data-source&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
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<span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">const</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> result</span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> compiledCondition</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> [{ field: [</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;ds_1&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;user&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;age&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">], op: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;&gt;&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, value: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">18</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }],</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { ds_1: { user: { age: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">20</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> } } }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">console.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">log</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(result); </span><span style="--shiki-light:#62687b;--shiki-dark:#818e99;">// true</span></span></code></pre></div><h2 id="compliedconditions" tabindex="-1">compliedConditions <a class="header-anchor" href="#compliedconditions" aria-label="Permalink to “compliedConditions”">​</a></h2><ul><li><p><strong>参数:</strong></p><ul><li><code>{ { [NODE_CONDS_KEY]?: DisplayCond[] } } node</code> 带条件字段的结构</li><li><code>{DataSourceManagerData} data</code> 数据上下文</li></ul></li><li><p><strong>返回:</strong></p><ul><li><code>{boolean}</code> 节点是否应该显示</li></ul></li><li><p><strong>详情:</strong></p><p>编译条件组(OR 语义:只要其中一组 <code>cond</code> 全部满足即返回 <code>true</code>)。</p></li></ul><h2 id="compilednodefield" tabindex="-1">compiledNodeField <a class="header-anchor" href="#compilednodefield" aria-label="Permalink to “compiledNodeField”">​</a></h2><ul><li><p><strong>参数:</strong></p><ul><li><code>{any} value</code> 字段值</li><li><code>{DataSourceManagerData} data</code> 数据上下文</li></ul></li><li><p><strong>返回:</strong></p><ul><li><code>{any}</code> 编译后的值</li></ul></li><li><p><strong>详情:</strong></p><p>编译节点字段中的数据源配置。</p></li><li><p><strong>示例:</strong></p></li></ul><div class="language-typescript"><button title="Copy code" data-copied="Copied" class="copy"></button><span class="lang">typescript</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { compiledNodeField } </span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;@tmagic/data-source&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">const</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> compiled</span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> compiledNodeField</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isBindDataSource: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">true</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, dataSourceId: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;ds_1&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, template: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;${name}&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> },</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { ds_1: { name: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;test&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> } }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div><h2 id="complieddatasourcefield" tabindex="-1">compliedDataSourceField <a class="header-anchor" href="#complieddatasourcefield" aria-label="Permalink to “compliedDataSourceField”">​</a></h2><ul><li><p><strong>参数:</strong></p><ul><li><code>{any} value</code> 字段值</li><li><code>{DataSourceManagerData} data</code> 数据上下文</li></ul></li><li><p><strong>返回:</strong></p><ul><li><code>{any}</code> 编译后的值</li></ul></li><li><p><strong>详情:</strong></p><p>编译数据源字段选择器的值。</p></li></ul><h2 id="template" tabindex="-1">template <a class="header-anchor" href="#template" aria-label="Permalink to “template”">​</a></h2><ul><li><p><strong>参数:</strong></p><ul><li><code>{string} value</code> 模板字符串</li><li><code>{DataSourceManagerData} data</code> 数据上下文</li></ul></li><li><p><strong>返回:</strong></p><ul><li><code>{string}</code> 替换后的字符串</li></ul></li><li><p><strong>详情:</strong></p><p>模板字符串替换,支持 <code>${id.field}</code> 格式。</p></li><li><p><strong>示例:</strong></p></li></ul><div class="language-typescript"><button title="Copy code" data-copied="Copied" class="copy"></button><span class="lang">typescript</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { template } </span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;@tmagic/data-source&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">const</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> result</span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> template</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span></span>
<span class="line"><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;用户名:${ds_1.user.name},年龄:${ds_1.user.age}&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { ds_1: { user: { name: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;张三&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, age: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">20</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> } } }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">console.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">log</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(result); </span><span style="--shiki-light:#62687b;--shiki-dark:#818e99;">// &#39;用户名:张三,年龄:20&#39;</span></span></code></pre></div><h2 id="createiteratorcontentdata" tabindex="-1">createIteratorContentData <a class="header-anchor" href="#createiteratorcontentdata" aria-label="Permalink to “createIteratorContentData”">​</a></h2><ul><li><p><strong>参数:</strong></p><ul><li><code>{any} itemData</code> 迭代项数据</li><li><code>{string} dsId</code> 数据源 ID</li><li><code>{string[]} fields</code> 字段路径,如 <code>[&#39;a&#39;, &#39;b&#39;, &#39;c&#39;]</code></li><li><code>{DataSourceManagerData} dsData</code> 数据源数据(可选,默认 <code>{}</code>)</li></ul></li><li><p><strong>返回:</strong></p><ul><li><code>{DataSourceManagerData}</code> 迭代器数据上下文</li></ul></li><li><p><strong>详情:</strong></p><p>创建迭代器的数据上下文。</p></li></ul><h2 id="compliediteratoritem" tabindex="-1">compliedIteratorItem <a class="header-anchor" href="#compliediteratoritem" aria-label="Permalink to “compliedIteratorItem”">​</a></h2><ul><li><p><strong>参数:</strong></p><ul><li><code>{object} options</code> 编译选项</li></ul></li><li><p><strong>返回:</strong></p><ul><li><code>{MNode}</code> 编译后的节点</li></ul></li><li><p><strong>详情:</strong></p><p>编译迭代器项。</p></li></ul><h2 id="updatenode" tabindex="-1">updateNode <a class="header-anchor" href="#updatenode" aria-label="Permalink to “updateNode”">​</a></h2><ul><li><p><strong>参数:</strong></p><ul><li><code>{MNode} node</code> 节点配置</li><li><code>{MApp} dsl</code> DSL 配置</li></ul></li><li><p><strong>返回:</strong></p><ul><li><code>{MApp}</code> 更新后的 DSL</li></ul></li><li><p><strong>详情:</strong></p><p>更新 DSL 中的指定节点。</p></li><li><p><strong>示例:</strong></p></li></ul><div class="language-typescript"><button title="Copy code" data-copied="Copied" class="copy"></button><span class="lang">typescript</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { updateNode } </span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;@tmagic/data-source&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">const</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> newDsl</span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> updateNode</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { id: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;button_1&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, type: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;button&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, text: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;新文本&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> },</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> dsl</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div><h2 id="registerdatasourceondemand" tabindex="-1">registerDataSourceOnDemand <a class="header-anchor" href="#registerdatasourceondemand" aria-label="Permalink to “registerDataSourceOnDemand”">​</a></h2><ul><li><p><strong>参数:</strong></p><ul><li><code>{MApp} dsl</code> DSL 配置</li><li><code>{Record&lt;string, () =&gt; Promise&lt;any&gt;&gt;} dataSourceModules</code> 数据源模块映射</li></ul></li><li><p><strong>返回:</strong></p><ul><li><code>{Promise&lt;Record&lt;string, any&gt;&gt;}</code> 按需加载到的数据源模块表(key 为数据源 <code>type</code>,value 为模块的 <code>default</code> 导出)</li></ul></li><li><p><strong>详情:</strong></p><p>按需加载数据源模块。根据 DSL 中实际依赖到的数据源类型动态加载对应模块,并以模块表形式返回。</p></li><li><p><strong>示例:</strong></p></li></ul><div class="language-typescript"><button title="Copy code" data-copied="Copied" class="copy"></button><span class="lang">typescript</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { registerDataSourceOnDemand } </span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;@tmagic/data-source&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">const</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> moduleMap</span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;"> await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> registerDataSourceOnDemand</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(dsl, {</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> custom</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">: () </span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">=&gt;</span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;"> import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;./CustomDataSource&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">),</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> socket</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">: () </span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">=&gt;</span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;"> import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;./SocketDataSource&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">});</span></span></code></pre></div></div></div></main><footer class="VPDocFooter" data-v-5a9131ba data-v-0e42eeea><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-0e42eeea><span class="visually-hidden" id="doc-footer-aria-label" data-v-0e42eeea>Pager</span><div class="pager" data-v-0e42eeea><a class="VPLink link pager-link prev" href="/tmagic-editor/docs/runtime-api/data-source/observedData.html" data-v-0e42eeea><!--[--><span class="desc" data-v-0e42eeea>Previous page</span><span class="title" data-v-0e42eeea>观察者数据类</span><!--]--></a></div><div class="pager" data-v-0e42eeea><!----></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><footer class="VPFooter has-sidebar" data-v-440dbbdf data-v-2daa7712><div class="container" data-v-2daa7712><p class="message" data-v-2daa7712>Powered by 腾讯视频会员平台技术中心</p><p class="copyright" data-v-2daa7712>Copyright (C) 2025 Tencent.</p></div></footer><!--[--><!--]--></div></div>
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