如何在 XSLT 中应用多个分组

Question

My Input XML:

<root>
    <Charges>
        <Charge ChargeId="716501">
            <Currency>USD</Currency>
            <GrossPrice Currency="USD" Amount="402921" Round="true" />
            <PaxId>402921</PaxId>
        </Charge>
        <Charge ChargeId="716501">
            <Currency>USD</Currency>
            <ChargeType>SRN</ChargeType>
            <GrossPrice Currency="USD" Amount="402922" Round="true" />
            <PaxId>402922</PaxId>
        </Charge>
        <Charge ChargeId="716501">
            <Currency>USD</Currency>
            <ChargeType>CAB</ChargeType>
            <GrossPrice Currency="USD" Amount="402922" Round="true" />
            <PaxId>402922</PaxId>
        </Charge>
    </Charges>
    <ProductPromotions>
        <ProductPromotion>
            <PromotionCode>J4894090</PromotionCode>
            <PromotionName>J4894090</PromotionName>
            <PassengerSplitUps>
                <PassengerSplitUp>
                    <PaxId>402921</PaxId>
                    <ChargeType>CAB</ChargeType>
                    <ChargeCode></ChargeCode>
                    <PromoDiscountSplitUp Currency="USD"
                        Amount="3FP00.0" Round="true" />
                </PassengerSplitUp>
                <PassengerSplitUp>
                    <PaxId>402922</PaxId>
                    <ChargeType>SRN</ChargeType>
                    <ChargeCode></ChargeCode>
                    <PromoDiscountSplitUp Currency="USD"
                        Amount="2SP00.0" Round="true" />
                </PassengerSplitUp>
            </PassengerSplitUps>
            <IsRestrictedPromotion>false</IsRestrictedPromotion>
        </ProductPromotion>
        <ProductPromotion>
            <PromotionCode>J48SECOND</PromotionCode>
            <PromotionName>J4894090</PromotionName>
            <PassengerSplitUps>
                <PassengerSplitUp>
                    <PaxId>402921</PaxId>
                    <ChargeType>SRN</ChargeType>
                    <ChargeCode></ChargeCode>
                    <PromoDiscountSplitUp Currency="USD"
                        Amount="2FP00.0" Round="true" />
                </PassengerSplitUp>
                <PassengerSplitUp>
                    <PaxId>402922</PaxId>
                    <ChargeType>CAB</ChargeType>
                    <ChargeCode></ChargeCode>
                    <PromoDiscountSplitUp Currency="USD"
                        Amount="2SP00.0" Round="true" />
                </PassengerSplitUp>
            </PassengerSplitUps>
            <IsRestrictedPromotion>false</IsRestrictedPromotion>
        </ProductPromotion>
    </ProductPromotions>
</root>

要求：我想按 pax id 对费用和促销进行分组。 我能够对任何一项进行分组，无论是收费还是促销。 但我需要将两者分组并放在节点GuestPrice下。 GuestPrice 节点应使用不同的 paxId 重复。 每个 GuestPrice 都有一组具有相同 paxid 的费用和促销活动。

Expected OutPut:
<GuestPrices>
    <GuestPrice>
        <PriceInfos>
            <PriceInfo Amount="402921" PriceTypeCode="49"></PriceInfo>
            <PriceInfo Amount="3FP00.0" CodeDescription="J4894090"
                PriceTypeCode="34" PricedComponentCode="49" />
            <PriceInfo Amount="2FP00.0" CodeDescription="J48SECOND"
                PriceTypeCode="34" PricedComponentCode="60" />
        </PriceInfos>
    </GuestPrice>
    <GuestPrice>
        <PriceInfos>
            <PriceInfo Amount="402922" PriceTypeCode="60"></PriceInfo>
            <PriceInfo Amount="402922" PriceTypeCode="49"></PriceInfo>
            <PriceInfo Amount="2SP00.0" CodeDescription="J4894090"
                PriceTypeCode="34" PricedComponentCode="60" />
            <PriceInfo Amount="2SP00.0" CodeDescription="J48SECOND"
                PriceTypeCode="34" PricedComponentCode="49" />
        </PriceInfos>
    </GuestPrice>
</GuestPrices>

我的 XSLT 不起作用：

<xsl:stylesheet
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">

    <xsl:template match="root">
            <GuestPrices>
            <xsl:for-each-group select="Charges/Charge" 
            group-by="PaxId">
                <GuestPrice>
                    <PriceInfos>
                        <xsl:for-each select="current-group()">
                            <xsl:choose>
                                <xsl:when
                                    test="ChargeType='CAB' or ChargeType='SRN' or ChargeType='TAX' ">
                                    <PriceInfo>
                                        <xsl:attribute name="Amount"><xsl:value-of
                                            select="GrossPrice/@Amount" /></xsl:attribute>

                                        <xsl:if test="ChargeType='CAB'">
                                            <xsl:attribute name="PriceTypeCode"><xsl:value-of
                                                select="'49'" /></xsl:attribute>
                                        </xsl:if>
                                        <xsl:if test="ChargeType='SRN'">
                                            <xsl:attribute name="PriceTypeCode"><xsl:value-of
                                                select="'60'" /></xsl:attribute>
                                        </xsl:if>
                                        <xsl:if test="ChargeType='TAX'">
                                            <xsl:attribute name="PriceTypeCode"><xsl:value-of
                                                select="'18'" /></xsl:attribute>
                                        </xsl:if>

                                        <xsl:value-of select="ChargeType" />
                                    </PriceInfo>
                                </xsl:when>
                            </xsl:choose>
                        </xsl:for-each>
                        <!-- PROMOTIONS -->
                        <xsl:for-each select="../../ProductPromotions/ProductPromotion/PassengerSplitUps/PassengerSplitUp">

                            <PriceInfo>
                                <xsl:attribute name="Amount"><xsl:value-of
                                    select="PromoDiscountSplitUp/@Amount" /></xsl:attribute>
                                <xsl:attribute name="CodeDescription"><xsl:value-of
                                    select="../../PromotionCode" /></xsl:attribute>
                                    <xsl:attribute name="CodeDescription"><xsl:value-of
                                    select="../../PromotionCode" /></xsl:attribute>
                                <xsl:attribute name="PriceTypeCode"><xsl:value-of
                                    select="'34'" /></xsl:attribute>
                                <xsl:for-each select="ChargeType">
                                    <xsl:if test=".='CAB'">
                                        <xsl:attribute name="PricedComponentCode"><xsl:value-of
                                            select="'49'" /></xsl:attribute>
                                    </xsl:if>
                                    <xsl:if test=".='SRN'">
                                        <xsl:attribute name="PricedComponentCode"><xsl:value-of
                                            select="'60'" /></xsl:attribute>
                                    </xsl:if>
                                    <xsl:if test=".='TAX'">
                                        <xsl:attribute name="PricedComponentCode"><xsl:value-of
                                            select="'18'" /></xsl:attribute>
                                    </xsl:if>
                                </xsl:for-each>
                            </PriceInfo>
                        </xsl:for-each>
                    </PriceInfos>
                </GuestPrice>
                </xsl:for-each-group>
            </GuestPrices>
    </xsl:template>

</xsl:stylesheet> 

Answer 1

下面应该给你一个开始：

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    exclude-result-prefixes="#all"
    version="3.0">

  <xsl:mode on-no-match="shallow-skip"/>

  <xsl:output method="xml" indent="yes"/>

  <xsl:template match="root">
    <GuestPrices>
      <xsl:for-each-group select="Charges/Charge, ProductPromotions/ProductPromotion/PassengerSplitUps/PassengerSplitUp" group-by="PaxId">
        <GuestPrice>
          <xsl:apply-templates select="current-group()"/>
        </GuestPrice>
      </xsl:for-each-group>
    </GuestPrices>
  </xsl:template>
  
  <xsl:template match="Charge">
    <PriceInfo Amount="{GrossPrice/@Amount}"/>
  </xsl:template>
  
  <xsl:template match="PassengerSplitUp">
    <PriceInfo Amount="{PromoDiscountSplitUp/@Amount}"/>
  </xsl:template>
  
</xsl:stylesheet>

如果我了解了它进行分组的要求，您只需添加结果PriceInfo元素缺少的属性。