XSLT匹配2個元素得到另一個

Question

我對XSLT比較新，但想執行我認爲是元素之間相對簡單的匹配以獲得另一個元素。

這是XML的片段。版本= 1.0，輸出爲文本（將xml轉換爲文本）。

<Accounts> 
       <Account> 
       <Id>273228MD301</Id> 
       <EPIProductCode>IPP4D3</EPIProductCode> 
       <Name>Mr John Smith</Name> 
       <Status>Open</Status> 
       <Owners> 
        <Owner> 
         <Id>273228M</Id> 
        </Owner> 
       </Owners> 
       <Advisers> 
        <Adviser> 
         <Id>286666</Id> 
         <PrimaryAdviser>true</PrimaryAdviser> 
        </Adviser> 
       </Advisers> 
       <Delete>false</Delete> 
       <LastModified>2012-06-08T15:19:19</LastModified> 
       </Account> 
       <Account> 
       <Id>273228MD399</Id> 
       <EPIProductCode>IPAAA</EPIProductCode> 
       <Name>Sir Leslie Patterson</Name> 
       <Status>Open</Status> 
       <Owners> 
        <Owner> 
         <Id>2732299</Id> 
        </Owner> 
       </Owners> 
       <Advisers> 
        <Adviser> 
         <Id>286666</Id> 
       <PrimaryAdviser>true</PrimaryAdviser> 
       </Adviser> 
       </Advisers> 
       <Delete>false</Delete> 
       <LastModified>2012-06-08T15:19:19</LastModified> 
       </Account> 
       <Account> 
       <Id>273228MD999</Id> 
       <EPIProductCode>IPYYY</EPIProductCode> 
       <Name>Dame Edna</Name> 
       <Status>Open</Status> 
       <Owners> 
        <Owner> 
         <Id>27322YY</Id> 
        </Owner> 
       </Owners> 
       <Advisers> 
        <Adviser> 
         <Id>286666</Id> 
         <PrimaryAdviser>true</PrimaryAdviser> 
        </Adviser> 
       </Advisers> 
       <Delete>false</Delete> 
       <LastModified>2012-06-08T15:19:19</LastModified> 
       </Account> 
       </Accounts> 
<InvestmentHoldingBalances> 
       <HoldingBalance> 
       <AccountId>273228MD399</AccountId> 
       <InvestmentCode>TEST123</InvestmentCode> 
       <Exchange>FND</Exchange> 
       <UnitBalance> 
        <Settled Currency="AUD">0</Settled> 
        <Pending Currency="AUD">0</Pending> 
        <AsAtDate>2012-06-08T15:19:34</AsAtDate> 
       </UnitBalance> 
       <LastModified>2012-05-16T00:00:00</LastModified> 
       </HoldingBalance> 
       <HoldingBalance> 
       <AccountId>273228MD301</AccountId> 
       <InvestmentCode>0114AU</InvestmentCode> 
       <Exchange>FND</Exchange> 
       <UnitBalance> 
        <Settled Currency="AUD">0</Settled> 
        <Pending Currency="AUD">0</Pending> 
        <AsAtDate>2012-06-08T15:19:34</AsAtDate> 
       </UnitBalance> 
       <LastModified>2012-05-16T00:00:00</LastModified> 
       </HoldingBalance> 
       <HoldingBalance> 
       <AccountId>273228MD301</AccountId> 
       <InvestmentCode>0016AU</InvestmentCode> 
       <Exchange>FND</Exchange> 
       <UnitBalance> 
        <Settled Currency="AUD">0</Settled> 
        <Pending Currency="AUD">0</Pending> 
        <AsAtDate>2012-06-08T15:19:34</AsAtDate> 
       </UnitBalance> 
       <LastModified>2012-05-16T00:00:00</LastModified> 
       </HoldingBalance> 
       <HoldingBalance> 
       <AccountId>273228MD301</AccountId> 
       <InvestmentCode>0277AU</InvestmentCode> 
       <Exchange>FND</Exchange> 
       <UnitBalance> 
        <Settled Currency="AUD">0</Settled> 
        <Pending Currency="AUD">0</Pending> 
        <AsAtDate>2012-06-08T15:19:34</AsAtDate> 
       </UnitBalance> 
       <LastModified>2012-05-15T00:00:00</LastModified> 
       </HoldingBalance> 
       <HoldingBalance> 
       <AccountId>273228MD999</AccountId> 
       <InvestmentCode>TD0155</InvestmentCode> 
       <Exchange>FND</Exchange> 
       <UnitBalance> 
        <Settled Currency="AUD">0</Settled> 
        <Pending Currency="AUD">0</Pending> 
        <AsAtDate>2012-06-08T15:19:34</AsAtDate> 
       </UnitBalance> 
       <LastModified>2012-05-21T00:00:00</LastModified> 
       </HoldingBalance> 
      </InvestmentHoldingBalances> 

什麼我搭售做的是匹配的節點//會計/會計/身份證以// InvestmentHoldingBalances/HoldingBalance/ACCOUNTID，當有一個匹配得到相應的業主// /業主/標識屬於到該帳戶ID。 當我做匹配時，我得到的結果是所有行的第一個// Owners/Owner/Id，而不是單個匹配的行。這是我的xslt;

<?xml version="1.0" encoding="ISO-8859-1"?> 

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> 

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

<xsl:template match="/"> 
    <xsl:apply-templates /> 
</xsl:template> 

<!-- Create Header Record --> 
<xsl:template match="xxxxxx"> 
<!-- Some other xslt here to extract header info --> 
<xsl:apply-templates select="InvestmentHoldingBalances/HoldingBalance" /> 
</xsl:template> 

<!-- Create HoldingBalance Records --> 
<xsl:template match="HoldingBalance"> 
<xsl:value-of select="AccountId" /> 
<xsl:text>","</xsl:text> 
<xsl:value-of select="InvestmentCode" /> 
<xsl:text>","</xsl:text> 
<xsl:value-of select="Exchange" /> 
<xsl:text>","</xsl:text> 
    <xsl:if test="../../Accounts/Account/Id=AccountId"> 
    <xsl:value-of select="../../Accounts/Account/Owners/Owner/Id" /> 
</xsl:if> 
<xsl:text>"</xsl:text> 
<xsl:text disable-output-escaping="yes">&#10;</xsl:text> 
</xsl:template> 

</xsl:stylesheet> 

的輸出是相同的所有者ID對於每行（即「273228M」的最後一列），而不是匹配所有者ID根據帳戶ID匹配;

273228MD399","TEST123","FND","273228M" 
273228MD301","0114AU","FND","273228M" 
273228MD301","0016AU","FND","273228M" 
273228MD301","0277AU","FND","273228M" 
273228MD999","TD0155","FND","273228M" 

我後來的結果看起來像這樣;

273228MD399","TEST123","FND","2732299" 
273228MD301","0114AU","FND","273228M" 
273228MD301","0016AU","FND","273228M" 
273228MD301","0277AU","FND","273228M" 
273228MD999","TD0155","FND","27322YY" 

感謝您的任何建議。

Answer 1

的基本問題是在

<xsl:value-of select="../../Accounts/Account/Owners/Owner/Id"/> 

選擇表達式在整個文檔中選擇所有所有者IDS無論帳戶ID，而當你問value-of一組多個節點的結果由規範定義爲文檔順序中集合中第一個節點的值。

您需要設定某種方式限制到只匹配的賬戶，要做到這一點最簡單的方法是

<xsl:value-of select="../../Accounts/Account[Id = current()/AccountId]/Owners/Owner/Id"/> 

，但它很可能是更有效率的頂層定義關鍵樣式表（把它直接的xsl:output元素之後）

<xsl:key name="accountById" match="Account" use="Id"/> 

然後你就可以提取使用

在 value-of正確的帳戶3210

<xsl:value-of select="key('accountById', AccountId)/Owners/Owner/Id"/> 

無論哪種方式，你實際上並不需要value-of圍繞if，因爲情況沒有帳戶匹配當前AccountId你會被要求輸入value-of空節點集，這是空字符串根據定義。

最後，當您使用<xsl:output method="text"/>時，您應該永遠不需要disable-output-escaping - 只需<xsl:text>&#10;</xsl:text>即可。