需要XQuery语法来实现搜索API中的'if Exists()'行为 [英] Need XQuery syntax for 'if Exists()' behaviour in search api

问题描述

我有一个要求，我们仅需要在活动版本中具有<associated-bundles>元素的文档中执行marklogic搜索.

I have a requirement that we need to perform marklogic search only within the documents which have <associated-bundles> element in it's active version.

下面是我们的文档结构

 <document document-status='active'>
 <file> 
     <version id=1 version-status='active'>
         <file-name/>
         <associated-bundles>
            <bundle doc-id="100082"></bundle>
            <bundle doc-id="100083"></bundle>
            <bundle doc-id="100000"></bundle>
         </associated-bundles>
         ...
         <file-level-visits>3</file-level-visits>
     </version>
     <version id=2 version-status='archived'>
         <file-name/>
         <uploaded-by>
         ...
         <file-level-visits>2</file-level-visits>
     </version>
     <version id=3 version-status='archived'>
         <file-name/>
         <uploaded-by>
         ...
         <file-level-visits>4</file-level-visits>
     </version>
 </file>

考虑到上述文档结构，我只需要对有效版本中具有<associated-bundles>元素的文档执行搜索.

Considering above document structure, I need to perform search only on the documents which have <associated-bundles> element in their active version.

注意:文档中只有1个活动版本.

Note: There is only 1 active version in the document.

以下是仅在活动文件版本状态"内搜索的查询.但是除此之外，我想在文档中包括<associated-bundles>的'ifExists'检查.

Below is the query to search only within active file "version-status". But in addition to this, I want to include 'ifExists' check of <associated-bundles> for the document.

cts:element-query (xs:QName ("version"),cts:and-query ((cts:element-attribute-value-query(fn:QName("","version"), fn:QName("","version-status"), "active", ("lang=en"), 1)
)));

请让我知道如何实现这一目标.

Please let me know, how to achieve this.

推荐答案

您可以使用 cts:element-query()使用以下文档中的语法:

You can check for the existence of an element using cts:element-query() using the syntax below from the documentation:

cts:element-query(xs:QName("my-element"),cts:and-query( () ))

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