[英]XSLT 1.0: Efficiently Compare Two Nodesets for a Match
I have a sequence of Color elements like this: 我有一系列这样的Color元素:
<Colors>
<Color Name ="AliceBlue" Hex="#F0F8FF"/>
<Color Name ="AntiqueWhite" Hex="#FAEBD7"/>
<!-- more values... -->
</Colors>
And a sequence of words: 和一系列单词:
<Words>
<Element>1px</Element>
<Element>Blue</Element>
<Element>Solid</Element>
</Words>
What is an efficient way to find where a Colors/Color/@name
attribute exactly matches a node in Words/Element/text()
, and retrieve that @name? 找到
Colors/Color/@name
属性与Words/Element/text()
中的节点完全匹配并检索该@name的有效方法是什么?
As @michael.hor257k suggested, you could use keys for this; 正如@ michael.hor257k所建议的那样,您可以为此使用密钥。 assuming this sample document:
假设此样本文档:
<root>
<Colors>
<Color Name ="AliceBlue" Hex="#F0F8FF"/>
<Color Name ="AntiqueWhite" Hex="#FAEBD7"/>
<Color Name="AnotherColor" Hex="123" />
<!-- more values... -->
</Colors>
<Words>
<Element>1px</Element>
<Element>Blue</Element>
<Element>AntiqueWhite</Element>
<Element>AliceBlue</Element>
</Words>
</root>
This XSLT: 此XSLT:
<?xml version="1.0" encoding="UTF-8" ?>
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
<xsl:output method="xml" omit-xml-declaration="yes" encoding="UTF-8" indent="yes" />
<xsl:key name="colors" match="/root/Colors/Color" use="@Name" />
<xsl:template match="/root/Words/Element[key('colors', .)]">
<xsl:value-of select="." />
</xsl:template>
<xsl:template match="text()" />
</xsl:transform>
Would output the names of colors that match in both the Element
and Color
nodes. 将输出在“
Element
和“ Color
节点中都匹配的颜色名称。 Here's the XSLTransform . 这是XSLTransform 。
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