注意,这是另外两个问题的延续:Limit recursion with one deepest loop and assign exact id to all elements和Adding common attribute to all chains in recursion
但是,在问题的陈述中,问题与以下内容相同:(Recursion) auto-incrementation for all depth level elements and keeping heredity path in chain
因此,当前问题的措词保持不变,只是关于新的XSLT代码的实际情况有所不同。
1-来源
<root> <object id="a" id-3="COMMON-ID-1"/> <object id="b" id-3="COMMON-ID-2"/> <object id="c" id-3="COMMON-ID-3"/> <object id="aa" parent-id="a" id-3="value"/> <object id="bb" parent-id="b" id-3="value"/> <object id="cc" parent-id="c" id-3="value"/> <object id="aaa" parent-id="aa" id-3="value"/> <object id="aaaa" parent-id="aa" id-3="value"/> <object id="bbb" parent-id="bb" id-3="value"/> <object id="ccc" parent-id="cc" id-3="value"/> <object id="bbbb" parent-id="bbb" id-3="value"/> <object id="cccc" parent-id="ccc" id-3="value"/> <object id="bbbbb" parent-id="bbbb" id-3="value"/> </root>
2-XSLT
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:exsl="http://exslt.org/common" extension-element-prefixes="exsl"> <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/> <xsl:strip-space elements="*"/> <xsl:key name="child" match="object" use="@parent-id" /> <xsl:template match="/root"> <!-- generate chains --> <xsl:variable name="chains"> <xsl:apply-templates select="object[not(@parent-id)]"/> </xsl:variable> <!-- find the longest chain --> <root> <xsl:for-each select="exsl:node-set($chains)/object"> <xsl:sort select="count(descendant::object)" data-type="number" order="descending"/> <xsl:if test="position()"> <xsl:copy-of select="."/> </xsl:if> </xsl:for-each> </root> </xsl:template> <xsl:template match="object"> <xsl:param name="common-id" select="@id-3"/> <xsl:copy> <xsl:copy-of select="@*"/> <xsl:attribute name="COMMON-ID"> <xsl:value-of select="$common-id"/> </xsl:attribute> </xsl:copy> <xsl:apply-templates select="key('child', @id)"> <xsl:with-param name="common-id" select="$common-id"/> </xsl:apply-templates> </xsl:template> </xsl:stylesheet>
3-输出
<?xml version="1.0" encoding="utf-16"?>
<root>
<object id="a" id-3="COMMON-ID-1" STATUS="0" COMMON-ID="COMMON-ID-1" path="1"/>
<object id="aa" parent-id="a" id-3="value" STATUS="1" COMMON-ID="COMMON-ID-1" path="1/1"/>
<object id="aaa" parent-id="aa" id-3="value" STATUS="1" COMMON-ID="COMMON-ID-1" path="1/1/1"/>
<object id="b" id-3="COMMON-ID-2" COMMON-ID="COMMON-ID-2" path="2"/>
<object id="bb" parent-id="b" id-3="value" COMMON-ID="COMMON-ID-2" path="2/1"/>
<object id="bbb" parent-id="bb" id-3="value" COMMON-ID="COMMON-ID-2" path="2/1/1"/>
<object id="bbbb" parent-id="bbb" id-3="value" COMMON-ID="COMMON-ID-2" path="2/1/1/1"/>
<object id="bbbbb" parent-id="bbbb" id-3="value" COMMON-ID="COMMON-ID-2" path="2/1/1/1/1"/>
<object id="c" id-3="COMMON-ID-3" COMMON-ID="COMMON-ID-3" path="3"/>
<object id="cc" parent-id="c" id-3="value" COMMON-ID="COMMON-ID-3" path="3/1"/>
<object id="ccc" parent-id="cc" id-3="value" COMMON-ID="COMMON-ID-3" path="3/1/1"/>
<object id="cccc" parent-id="ccc" id-3="value" COMMON-ID="COMMON-ID-3" path="3/1/1/1"/>
</root>
注意,这是另外两个问题的延续:用一个最深层的循环限制递归并为所有元素分配精确的ID,并在递归中向所有链添加公共属性但是,在...