将模板应用于具有具有属性的子节点的节点 [英] Apply template to nodes that have children with attribute
问题描述
我想将模板应用于具有指定属性的子节点的节点,我很好奇是否可以使用 <template match=...
I'd like to apply a template to nodes that have children with a specified attribute, and I'm curious if it's possible with a <template match=...
所以如果我有一个输入 xml
So if i have an input xml
<?xml version="1.0"?>
<parent-node>
<child-node>
<label>value1</label>
<name>name1</name>
<desc src="anything">description1</desc>
</child-node>
<child-node>
<label>value2</label>
<desc>description2</desc>
</child-node>
<some-node>
<name>name3</name>
<desc src="something">description3</desc>
</some-node>
</parent-node>
所需的模板将应用于具有 desc
子节点并定义了 src
属性的节点,例如.第一个和最后一个节点:
the required template will be applied to the nodes that have desc
children with src
attribute defined, eg. the first and last nodes:
<child-node>
<label>value1</label>
<name>name1</name>
<desc src="anything">description1</desc>
</child-node>
<some-node>
<name>name3</name>
<desc src="something">description3</desc>
</some-node>
到目前为止我拥有的最好的是一个模板匹配具有 desc
子节点的节点,其余的(测试是否有任何 desc
节点具有 @src
) 位于模板内,位于 xsl:choose
子句中:
The best i have so far is a template matching the nodes that have desc
children, and the rest (testing if any of the desc
nodes have @src
) is inside the template, in an xsl:choose
clause:
<xsl:template match="*[desc]">
<xsl:choose>
<xsl:when test="desc[@src]">
<xsl:element name="node-with-src">
[...]
</xsl:element>
</xsl:when>
<xsl:otherwise>
<xsl:element name="node">
[...]
</xsl:element>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
有了这样一个模板,我可以离开这个模板中的 otherwise
部分,无论如何,它会更好.
By having such a template, i could leave but the otherwise
part inside this template, and anyway, it would be a lot nicer.
预先感谢您的每一个回答!
Thank you in advance for every answer!
编辑我更喜欢 1.0 解决方案,但这不是标准.
Edit I'd prefer a 1.0 solution, but it's not a criteria.
推荐答案
允许使用更复杂(嵌套)的谓词.使用这个:
More complex (nested) predicates are allowed. Use this:
<xsl:template match="*[desc[@src]]">
以及没有src
属性的节点的相应模板:
And a corresponding template for the nodes without a src
attribute:
<xsl:template match="*[desc[not(@src)]]">
例如:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="*[desc[@src]]">
<xsl:element name="node-with-src"/>
</xsl:template>
<xsl:template match="*[desc[not(@src)]]">
<xsl:element name="node"/>
</xsl:template>
</xsl:stylesheet>
适用于:
<parent-node>
<child-node>
<label>value1</label>
<name>name1</name>
<desc src="anything">description1</desc>
</child-node>
<child-node>
<label>value2</label>
<desc>description2</desc>
</child-node>
<some-node>
<name>name3</name>
<desc src="something">description3</desc>
</some-node>
</parent-node>
输出:
<node-with-src/>
<node/>
<node-with-src/>
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