[英]xslt: whats the easiest way to do a negated selection?
Basically what I would like is something like this that finds all nodes where the ID cannot be lookup'ed up ('broken links') : 基本上我想要的是找到ID不能被查找的所有节点('断开的链接'):
<xsl:variable name="failedIDLookups" select="//inventory/box[@boxtypeID != //boxtypes/@ID]"/>
But this is not working as expected - I suppose the syntax is wrong, what should be the correct way of doing this ? 但是这没有按预期工作 - 我认为语法错误,这样做的正确方法是什么?
I suspect you want 我怀疑你想要
<xsl:variable name="failedIDLookups" select="//inventory/box[not(@boxtypeID = //boxtypes/@ID)]"/>
which then could be optimized with a key declaration (as a child of xsl:stylesheet
) 然后可以使用键声明进行优化(作为
xsl:stylesheet
的子代)
<xsl:key name="boxtypes-ref" match="boxtypes" use="@ID"/>
and 和
<xsl:variable name="failedIDLookups" select="//inventory/box[not(key('boxtypes-ref', @boxtypeID))]"/>
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