XSLT分组与子元素的添加/组合

时间：2011-11-22 15:30:21

标签： xml xslt muenchian-grouping xsl-grouping

我有以下XML 

    <InvestmentAccount Id="Element01_Source3_Sequqence002" Type="Standard" InvestmentStrategyId="Employer" ParameterOverrideIds="AllocationRateOverride">
      <Investment FundName="Fund032" FundValue="4754.82" />
      <Investment FundName="Fund034" FundValue="4643.48" />
      <Investment FundName="Fund035" FundValue="2509.46" />
      <Investment FundName="Fund038" FundValue="7104.71" />
      <Investment FundName="Fund042" FundValue="4244.08" />
    </InvestmentAccount>
    <InvestmentAccount Id="Element01_Source4_Sequence003" Type="DWPRebate" InvestmentStrategyId="DSS" ParameterOverrideIds="DWPAllocationRateOverride">
      <Investment FundName="Fund032" FundValue="1881.76" />
      <Investment FundName="Fund034" FundValue="1584.18" />
      <Investment FundName="Fund035" FundValue="872.99" />
      <Investment FundName="Fund038" FundValue="2899.53" />
      <Investment FundName="Fund042" FundValue="1762.62" />
    </InvestmentAccount>
     <InvestmentAccount Id="Element01_Source2_Sequence001" Type="Standard" InvestmentStrategyId="Employee" ParameterOverrideIds="AllocationRateOverride">
      <Investment FundName="Fund032" FundValue="7395.91" />
      <Investment FundName="Fund034" FundValue="7222.72" />
      <Investment FundName="Fund035" FundValue="3903.52" />
      <Investment FundName="Fund038" FundValue="11051.32" />
      <Investment FundName="Fund042" FundValue="6602.54" />
    </InvestmentAccount>
    <InvestmentAccount Id="Element02_Source2_Sequence004" Type="TransferNonPR" InvestmentStrategyId="Employee" ParameterOverrideIds="AllocationRateOverride">
      <Investment FundName="Fund032" FundValue="1439.29" />
      <Investment FundName="Fund034" FundValue="1614.31" />
      <Investment FundName="Fund035" FundValue="863.68" />
      <Investment FundName="Fund038" FundValue="2153.80" />
      <Investment FundName="Fund042" FundValue="1306.45" />
    </InvestmentAccount>
    <InvestmentAccount Id="Element03_Source2_Sequence005" Type="TransferNonPR" InvestmentStrategyId="Employee" ParameterOverrideIds="AllocationRateOverride">
      <Investment FundName="Fund032" FundValue="9617.42" />
      <Investment FundName="Fund034" FundValue="10787.03" />
      <Investment FundName="Fund035" FundValue="5771.18" />
      <Investment FundName="Fund038" FundValue="14391.20" />
      <Investment FundName="Fund042" FundValue="8729.81" />
      <Investment FundName="fictiousextra" FundValue="1414" />
    </InvestmentAccount>

我想做的是投资策略和类型与上面的最后2个案例相同（为了清晰起见，重新排序）是基金名称与基金价值相加的基础。在这种情况下，每一方都是相同的，但每一方可能会有一些额外的或更少。

所以结果是我需要访问FundName和FundValue，或者我可以加总或已经加总的值。

帮助！

是的，这是我想要实现的输出。

        <InvestmentAccount Id="Element01_Source3_Sequence002" Type="Standard" InvestmentStrategyId="Employer" ParameterOverrideIds="AllocationRateOverride">
          <Investment FundName="Fund032" FundValue="4754.82" />
          <Investment FundName="Fund034" FundValue="4643.48" />
          <Investment FundName="Fund035" FundValue="2509.46" />
          <Investment FundName="Fund038" FundValue="7104.71" />
          <Investment FundName="Fund042" FundValue="4244.08" />
        </InvestmentAccount>
        <InvestmentAccount Id="Element01_Source4_Sequence003" Type="DWPRebate" InvestmentStrategyId="DSS" ParameterOverrideIds="DWPAllocationRateOverride">
          <Investment FundName="Fund032" FundValue="1881.76" />
          <Investment FundName="Fund034" FundValue="1584.18" />
          <Investment FundName="Fund035" FundValue="872.99" />
          <Investment FundName="Fund038" FundValue="2899.53" />
          <Investment FundName="Fund042" FundValue="1762.62" />
        </InvestmentAccount>
         <InvestmentAccount Id="Element01_Source2_Sequence001" Type="Standard" InvestmentStrategyId="Employee" ParameterOverrideIds="AllocationRateOverride">
          <Investment FundName="Fund032" FundValue="7395.91" />
          <Investment FundName="Fund034" FundValue="7222.72" />
          <Investment FundName="Fund035" FundValue="3903.52" />
          <Investment FundName="Fund038" FundValue="11051.32" />
          <Investment FundName="Fund042" FundValue="6602.54" />
        </InvestmentAccount>
<!-- THIS ONE IS THE SUMMED COMBINTION DUE TO InvestmentStrategyId and Type being multiply occuring -->
<InvestmentAccount ...>
          <Investment FundName="Fund032" FundValue="11056.71" />
          <Investment FundName="Fund034" FundValue="12401.34" />
          <Investment FundName="Fund035" FundValue="6634.86" />
          <Investment FundName="Fund038" FundValue="16545" />
          <Investment FundName="Fund042" FundValue="10036.26" />
          <Investment FundName="fictiousextra" FundValue="1414" />
</InvestmentAccount>

包括1中存在的任何FundNames而不是其他。

我应该添加我正在使用.net 4.0

2 个答案:

答案 0 :(得分：1)

XSLT 2.0解决方案：

<?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="xs"
    version="2.0">
    <xsl:template match="/">
        <xsl:apply-templates/>
    </xsl:template>
    <xsl:template match="*">
        <xsl:copy>
            <xsl:copy-of select="@*"/>
            <xsl:apply-templates/>
        </xsl:copy>
    </xsl:template>
    <xsl:template match="InvestmentAccount[1]">
        <xsl:for-each-group select="self::*|following-sibling::InvestmentAccount" group-by="concat(@InvestmentStrategyId,@Type)" >
            <InvestmentAccount Id="{@Id}" Type="{@Type}" InvestmentStrategyId="{@InvestmentStrategyId}" ParameterOverrideIds="{@ParameterOverrideIds}">
                <xsl:for-each-group select="current-group()/Investment" group-by="@FundName">
                    <Investment FundName="{current-grouping-key()}" FundValue="{sum(for $x in current-group()/@FundValue return xs:double(data($x)))}" />
                </xsl:for-each-group>
            </InvestmentAccount>
        </xsl:for-each-group>
    </xsl:template>
    <xsl:template match="InvestmentAccount"/>
</xsl:stylesheet>

我将XML插入名为<test></test>的根目录中，XSLT的结果是：

<?xml version="1.0" encoding="UTF-8"?>
<test>
    <InvestmentAccount Id="Element01_Source3_Sequence002" Type="Standard"
        InvestmentStrategyId="Employer" ParameterOverrideIds="AllocationRateOverride">
        <Investment FundName="Fund032" FundValue="4754.82"/>
        <Investment FundName="Fund034" FundValue="4643.48"/>
        <Investment FundName="Fund035" FundValue="2509.46"/>
        <Investment FundName="Fund038" FundValue="7104.71"/>
        <Investment FundName="Fund042" FundValue="4244.08"/>
    </InvestmentAccount>
    <InvestmentAccount Id="Element01_Source4_Sequence003" Type="DWPRebate"
        InvestmentStrategyId="DSS" ParameterOverrideIds="DWPAllocationRateOverride">
        <Investment FundName="Fund032" FundValue="1881.76"/>
        <Investment FundName="Fund034" FundValue="1584.18"/>
        <Investment FundName="Fund035" FundValue="872.99"/>
        <Investment FundName="Fund038" FundValue="2899.53"/>
        <Investment FundName="Fund042" FundValue="1762.62"/>
    </InvestmentAccount>
    <InvestmentAccount Id="Element01_Source2_Sequence001" Type="Standard"
        InvestmentStrategyId="Employee" ParameterOverrideIds="AllocationRateOverride">
        <Investment FundName="Fund032" FundValue="7395.91"/>
        <Investment FundName="Fund034" FundValue="7222.72"/>
        <Investment FundName="Fund035" FundValue="3903.52"/>
        <Investment FundName="Fund038" FundValue="11051.32"/>
        <Investment FundName="Fund042" FundValue="6602.54"/>
    </InvestmentAccount>
    <InvestmentAccount Id="Element02_Source2_Sequence004" Type="TransferNonPR"
        InvestmentStrategyId="Employee" ParameterOverrideIds="AllocationRateOverride">
        <Investment FundName="Fund032" FundValue="11056.71"/>
        <Investment FundName="Fund034" FundValue="12401.34"/>
        <Investment FundName="Fund035" FundValue="6634.860000000001"/>
        <Investment FundName="Fund038" FundValue="16545"/>
        <Investment FundName="Fund042" FundValue="10036.26"/>
        <Investment FundName="fictiousextra" FundValue="1414"/>
    </InvestmentAccount>




</test>

注意：InvestmentAccount属性值是InvestmentAccount组中第一个元素InvestmentAccount，它具有相同的Type和InvestmentStrategyId值。这可以很容易地改变。

答案 1 :(得分：1)

XSLT 1.0将使用Muenchian Grouping。

我认为在这种情况下，你要分组两次。首先，您按 InvestmentAccount 元素进行分组，因此您需要一个类似的键

<xsl:key name="Accounts" match="InvestmentAccount" 
         use="concat(@Type, '|', @InvestmentStrategyId)" />

然后，您还需要按帐户中的投资元素进行分组。

<xsl:key name="Investments" match="Investment" 
         use="concat(../@Type, '|', ../@InvestmentStrategyId, '|', @FundName)" />

请注意在连接中使用管道。这可以是任何字符，但它必须是不具有任何属性的字符。

要按 InvestmentAccount 元素进行分组，您只需匹配每个组中的第一个元素，如下所示：

<xsl:apply-templates 
  select="InvestmentAccount[
    generate-id() = 
    generate-id(key('Accounts', concat(@Type, '|', @InvestmentStrategyId))[1])]" />

在群组中，您可以获得所有投资元素：

 <xsl:apply-templates 
   select="//InvestmentAccount
     [@Type=current()/@Type]
     [@InvestmentStrategyId = current()/@InvestmentStrategyId]/Investment
        [generate-id() = 
         generate-id(key('Investments', 
           concat(../@Type, '|', ../@InvestmentStrategyId, '|', @FundName))[1])]" />

这是完整的XSLT（注意我假设了一个名为投资的根元素 

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:output method="xml" indent="yes"/>

   <xsl:key name="Accounts" match="InvestmentAccount" use="concat(@Type, '|', @InvestmentStrategyId)" />
   <xsl:key name="Investments" match="Investment" use="concat(../@Type, '|', ../@InvestmentStrategyId, '|', @FundName)" />

   <xsl:template match="/Investments">
      <xsl:apply-templates select="InvestmentAccount[generate-id() = generate-id(key('Accounts', concat(@Type, '|', @InvestmentStrategyId))[1])]" />
   </xsl:template>

   <xsl:template match="InvestmentAccount">
      <xsl:copy>
         <xsl:copy-of select="@*" />
         <xsl:apply-templates select="//InvestmentAccount[@Type=current()/@Type][@InvestmentStrategyId = current()/@InvestmentStrategyId]/Investment[generate-id() = generate-id(key('Investments', concat(../@Type, '|', ../@InvestmentStrategyId, '|', @FundName))[1])]" />
      </xsl:copy>   
   </xsl:template>

   <xsl:template match="Investment">
      <xsl:copy>
         <xsl:copy-of select="@FundName" />
         <xsl:attribute name="FundValue"><xsl:value-of select="format-number(sum(key('Investments', concat(../@Type, '|', ../@InvestmentStrategyId, '|', @FundName))/@FundValue), '0.00')" /></xsl:attribute>
      </xsl:copy>   
   </xsl:template>

   <xsl:template match="@*|node()">
      <xsl:copy>
         <xsl:apply-templates select="@*|node()"/>
      </xsl:copy>
   </xsl:template>
</xsl:stylesheet>

当应用于您的示例XML（具有投资的根元素）时，输出以下内容：

<InvestmentAccount Id="Element01_Source3_Sequqence002" Type="Standard" InvestmentStrategyId="Employer" ParameterOverrideIds="AllocationRateOverride">
   <Investment FundName="Fund032" FundValue="4754.82" />
   <Investment FundName="Fund034" FundValue="4643.48" />
   <Investment FundName="Fund035" FundValue="2509.46" />
   <Investment FundName="Fund038" FundValue="7104.71" />
   <Investment FundName="Fund042" FundValue="4244.08" />
</InvestmentAccount>
   <InvestmentAccount Id="Element01_Source4_Sequence003" Type="DWPRebate" InvestmentStrategyId="DSS" ParameterOverrideIds="DWPAllocationRateOverride">
   <Investment FundName="Fund032" FundValue="1881.76" />
   <Investment FundName="Fund034" FundValue="1584.18" />
   <Investment FundName="Fund035" FundValue="872.99" />
   <Investment FundName="Fund038" FundValue="2899.53" />
   <Investment FundName="Fund042" FundValue="1762.62" />
</InvestmentAccount>
   <InvestmentAccount Id="Element01_Source2_Sequence001" Type="Standard" InvestmentStrategyId="Employee" ParameterOverrideIds="AllocationRateOverride">
   <Investment FundName="Fund032" FundValue="7395.91" />
   <Investment FundName="Fund034" FundValue="7222.72" />
   <Investment FundName="Fund035" FundValue="3903.52" />
   <Investment FundName="Fund038" FundValue="11051.32" />
   <Investment FundName="Fund042" FundValue="6602.54" />
</InvestmentAccount>
<InvestmentAccount Id="Element02_Source2_Sequence004" Type="TransferNonPR" InvestmentStrategyId="Employee" ParameterOverrideIds="AllocationRateOverride">
   <Investment FundName="Fund032" FundValue="11056.71" />
   <Investment FundName="Fund034" FundValue="12401.34" />
   <Investment FundName="Fund035" FundValue="6634.86" />
   <Investment FundName="Fund038" FundValue="16545.00" />
   <Investment FundName="Fund042" FundValue="10036.26" />
   <Investment FundName="fictiousextra" FundValue="1414.00" />
</InvestmentAccount>

我不确定您希望分组 InvestmentAccount 元素的属性，但希望您可以自行调整。

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