如何根据条件移动XML元素

Question

我有一个XML:

<?xml version="1.0" encoding="UTF-8"?>
<COLLECTION>
<AddedBOMs NAME="AddedBOMs" TYPE="Unknown" STATUS="0">
<BOMHeader>
    <Number>One</Number>
    <StartEffectivity>One 00:00:00</StartEffectivity>
    <EndEffectivity>One 00:00:00</EndEffectivity>
</BOMHeader>
</AddedBOMs>
<ChangedBOMs NAME="ChangedBOMs" TYPE="Unknown" STATUS="0">
<BOMHeader>
    <Number>Two</Number>
    <StartEffectivity>Two 00:00:00</StartEffectivity>
    <EndEffectivity>Two 00:00:00</EndEffectivity>
</BOMHeader>
</ChangedBOMs>
<UnchangedBOMs NAME="UnchangedBOMs" TYPE="Unknown" STATUS="0">
<BOMHeader>
    <Number>Three</Number>
    <StartEffectivity>Three 00:00:00</StartEffectivity>
    <EndEffectivity>Three 00:00:00</EndEffectivity>
</BOMHeader>
</UnchangedBOMs>
<DeletedBOMComponents NAME="DeletedBOMComponents" TYPE="Unknown" STATUS="0">
<BOMComponent>
    <PartNumber>Three</PartNumber>
</BOMComponent>
</DeletedBOMComponents>
<AddedBOMComponents NAME="AddedBOMComponents" TYPE="Unknown" STATUS="0">
<BOMComponent>
    <PartNumber>Two</PartNumber>
</BOMComponent>
</AddedBOMComponents>
<ChangedBOMComponents NAME="ChangedBOMComponents" TYPE="Unknown" STATUS="0">
<BOMComponent>
    <PartNumber>One</PartNumber>
</BOMComponent>
</ChangedBOMComponents>
</COLLECTION>

我想移动 startefftivity 和 endefftivity 从 addeddboms/BOMHeader，但它应该与链接…/BOMComponent/PartNumber即BOMComponent的部件号与BOMHeader的编号相匹配，其各自的startffectif和endffectif在BOMComponent

中复制预期输出:

<DeletedBOMComponents NAME="DeletedBOMComponents" TYPE="Unknown" STATUS="0">
<BOMComponent>
    <PartNumber>Three</PartNumber>
    <StartEffectivity>Three 00:00:00</StartEffectivity>
    <EndEffectivity>Three 00:00:00</EndEffectivity>
</BOMComponent>
</DeletedBOMComponents>
<AddedBOMComponents NAME="AddedBOMComponents" TYPE="Unknown" STATUS="0">
<BOMComponent>
    <PartNumber>Two</PartNumber>
    <StartEffectivity>Two 00:00:00</StartEffectivity>
    <EndEffectivity>Two 00:00:00</EndEffectivity>
</BOMComponent>
</AddedBOMComponents>
<ChangedBOMComponents NAME="ChangedBOMComponents" TYPE="Unknown" STATUS="0">
<BOMComponent>
    <PartNumber>One</PartNumber>
    <StartEffectivity>One 00:00:00</StartEffectivity>
    <EndEffectivity>One 00:00:00</EndEffectivity>
</BOMComponent>
</ChangedBOMComponents>

Answer 1

这里需要应用的逻辑一点也不清楚。假设您只想复制"组件"，而从相应的BOMHeader复制节点，请尝试:

XSLT 1.0

<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:key name="header" match="BOMHeader" use="Number" />
<!-- identity transform -->
<xsl:template match="@*|node()">
    <xsl:copy>
        <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
</xsl:template>
<xsl:template match="/COLLECTION">
    <xsl:copy>
        <xsl:apply-templates select="*[BOMComponent]"/>
    </xsl:copy>
</xsl:template>
<xsl:template match="BOMComponent">
    <xsl:variable name="head" select="key('header', PartNumber)" />
    <xsl:copy>
        <xsl:copy-of select="PartNumber"/>
        <xsl:copy-of select="$head/StartEffectivity | $head/EndEffectivity"/>
    </xsl:copy>
</xsl:template>
</xsl:stylesheet>