XML到XML - 创建唯一ID并在同一文档中引用它们

时间：2011-07-07 13:43:25

标签： xslt

我有一个源xml，它包含spot中的地址，需要转换为一个xml，它将所有地址保存到一个元素中并引用每个地址。 我正在使用Saxon 9.1处理器和样式表版本1.0。 谢谢你的帮助。

源代码：

<?xml version="1.0" encoding="utf-8"?>
<ContactDetails xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <AddressDetails StartDate="1992-04-03" Type="Previous">
        <Address>
            <City City="Wien" />
            <Postcode Postcode="LSP-123" />
        </Address>
    </AddressDetails>
    <AddressDetails StartDate="1982-09-19" Type="Current">
        <Address>
            <City City="Toronto" />
            <Postcode Postcode="LKT-947" />
        </Address>
    </AddressDetails>
    <AddressDetails StartDate="1977-05-27" Type="Mailing">
        <Address>
            <City City="Sydney" />
            <Postcode Postcode="OKU-846" />
        </Address>
    </AddressDetails>
</ContactDetails>

目标代码：

<?xml version="1.0" encoding="utf-8"?>
<Application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <ContactDetails>
        <AddressDetails StartDate="1992-04-03" Type="Previous">
            <AddressRef ReferedID="Prev_1" />
        </AddressDetails>
        <AddressDetails StartDate="1982-09-19" Type="Current">
            <AddressRef ReferedID="Curr_2" />
        </AddressDetails>
        <AddressDetails StartDate="1977-05-27" Type="Mailing">
            <AddressRef ReferedID="Mail_3" />
        </AddressDetails>
    </ContactDetails>
    <AddressSegment>
            <Address>
                <ID ID="Prev_1" />
                <City City="Wien" />
                <Postcode Postcode="LSP-123" />
            </Address>
            <Address>
                <ID UniqueID="Curr_2" />
                <City City="Toronto" />
                <Postcode Postcode="LKT-947" />
            </Address>        
            <Address>
                <ID UniqueID="Mail_3" />
                <City City="Sydney" />
                <Postcode Postcode="OKU-846" />
            </Address>        
    </AddressSegment>
</Application>

使用key和generate-id，因为我试图首先生成ID并将其复制到地址中。这是我对xslt的最后一次试用（我得到的最好的结果就是让UniqueID为空，所以我不知道这个解决方案有多远:)）

<?xml version='1.0' ?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:key name="ID_key" match="*[@ReferedID]" use="@ReferedID"/>
<xsl:template match="/">
    <Application>
    <ContactDetails>
        <xsl:for-each select="Application/Person/ContactDetails/AddressDetails">
        <AddressDetails>
            <xsl:attribute name="StartDate">
            <xsl:value-of select="@StartDate"/>
            </xsl:attribute>
                        <xsl:attribute name="Type">
                            <xsl:value-of select="@Type" />
            </xsl:attribute>
                <AddressRef>
            <xsl:attribute name="ReferedID">
                <xsl:value-of select="generate-id()"/>
            </xsl:attribute>
            </AddressRef>
        </AddressDetails>
        </xsl:for-each>
    </ContactDetails>
    <AddressSegment>
        <xsl:for-each select="Application/Person/ContactDetails/AddressDetails">
        <Address>
            <ID>
            <xsl:attribute name="UniqueID">
                <xsl:value-of select="Address/ID[generate-id()=generate-id(key('ID_key',@UniqueID))]" />
            </xsl:attribute>
            </ID>
            <City>
            <xsl:attribute name="City">
                <xsl:value-of select="Address/City/@City"/>
            </xsl:attribute>
            </City>
                        <Postcode>
                                    <sl:attribute name="Postcode">
                    <xsl:value-of select="Address/Postcode/@Postcode"/>
                    </xsl:attribute>
            </Postcode>
        </Address>
            </xsl:for-each>
     </AddressSegment>
   </Application>
   </xsl:template>
</xsl:stylesheet>

3 个答案:

答案 0 :(得分：2)

为您举例说明如何使用generate-id和模式，示例样式表

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

  <xsl:strip-space elements="*"/>
  <xsl:output indent="yes"/>

  <xsl:template match="ContactDetails">
    <xsl:copy>
      <xsl:copy-of select="@*"/>
      <ContactDetails>
        <xsl:apply-templates select="AddressDetails/Address" mode="det"/>
      </ContactDetails>
      <AddressSegment>
        <xsl:apply-templates select="AddressDetails/Address"/>
      </AddressSegment>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="Address" mode="det">
    <AddressDetails StartDate="{../@StartDate}" Type="{../@Type}">
      <AddressRef ReferedID="{generate-id()}"/>
    </AddressDetails>
  </xsl:template>

  <xsl:template match="Address">
    <xsl:copy>
      <xsl:copy-of select="@*"/>
      <ID ID="{generate-id()}"/>
      <xsl:copy-of select="*"/>
    </xsl:copy>
  </xsl:template>

</xsl:stylesheet>

转换输入

<?xml version="1.0" encoding="utf-8"?>
<ContactDetails xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <AddressDetails StartDate="1992-04-03" Type="Previous">
        <Address>
            <City City="Wien" />
            <Postcode Postcode="LSP-123" />
        </Address>
    </AddressDetails>
    <AddressDetails StartDate="1982-09-19" Type="Current">
        <Address>
            <City City="Toronto" />
            <Postcode Postcode="LKT-947" />
        </Address>
    </AddressDetails>
    <AddressDetails StartDate="1977-05-27" Type="Mailing">
        <Address>
            <City City="Sydney" />
            <Postcode Postcode="OKU-846" />
        </Address>
    </AddressDetails>
</ContactDetails>

将Saxon 6.5.5输入输出

<ContactDetails xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <ContactDetails>
      <AddressDetails StartDate="1992-04-03" Type="Previous">
         <AddressRef ReferedID="d0e3"/>
      </AddressDetails>
      <AddressDetails StartDate="1982-09-19" Type="Current">
         <AddressRef ReferedID="d0e7"/>
      </AddressDetails>
      <AddressDetails StartDate="1977-05-27" Type="Mailing">
         <AddressRef ReferedID="d0e11"/>
      </AddressDetails>
   </ContactDetails>
   <AddressSegment>
      <Address>
         <ID ID="d0e3"/>
         <City City="Wien"/>
         <Postcode Postcode="LSP-123"/>
      </Address>
      <Address>
         <ID ID="d0e7"/>
         <City City="Toronto"/>
         <Postcode Postcode="LKT-947"/>
      </Address>
      <Address>
         <ID ID="d0e11"/>
         <City City="Sydney"/>
         <Postcode Postcode="OKU-846"/>
      </Address>
   </AddressSegment>
</ContactDetails>

答案 1 :(得分：0)

以下样式表：

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:strip-space elements="*" />
    <xsl:output indent="yes" />
    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()" />
        </xsl:copy>
    </xsl:template>
    <xsl:template match="ContactDetails">
        <Application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
            <ContactDetails>
                <xsl:apply-templates select="AddressDetails" />
            </ContactDetails>
            <AddressSegment>
                <xsl:apply-templates select="AddressDetails/Address"
                    mode="ref" />
            </AddressSegment>
        </Application>
    </xsl:template>
    <xsl:template match="AddressDetails/Address">
        <AddressRef ReferedID="{generate-id()}" />
    </xsl:template>
    <xsl:template match="AddressDetails/Address" mode="ref">
        <xsl:copy>
            <xsl:apply-templates select="@*" />
            <ID ID="{generate-id(../*)}" />
            <xsl:apply-templates select="node()" />
        </xsl:copy>
    </xsl:template>
</xsl:stylesheet>

在此输入上：

<?xml version="1.0" encoding="utf-8"?>
<ContactDetails xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <AddressDetails StartDate="1992-04-03" Type="Previous">
        <Address>
            <City City="Wien" />
            <Postcode Postcode="LSP-123" />
        </Address>
    </AddressDetails>
    <AddressDetails StartDate="1982-09-19" Type="Current">
        <Address>
            <City City="Toronto" />
            <Postcode Postcode="LKT-947" />
        </Address>
    </AddressDetails>
    <AddressDetails StartDate="1977-05-27" Type="Mailing">
        <Address>
            <City City="Sydney" />
            <Postcode Postcode="OKU-846" />
        </Address>
    </AddressDetails>
</ContactDetails>

产生所需的结果：

<Application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <ContactDetails>
        <AddressDetails StartDate="1992-04-03" Type="Previous">
            <AddressRef ReferedID="d1e3" />
        </AddressDetails>
        <AddressDetails StartDate="1982-09-19" Type="Current">
            <AddressRef ReferedID="d1e7" />
        </AddressDetails>
        <AddressDetails StartDate="1977-05-27" Type="Mailing">
            <AddressRef ReferedID="d1e11" />
        </AddressDetails>
    </ContactDetails>
    <AddressSegment>
        <Address>
            <ID ID="d1e3" />
            <City City="Wien" />
            <Postcode Postcode="LSP-123" />
        </Address>
        <Address>
            <ID ID="d1e7" />
            <City City="Toronto" />
            <Postcode Postcode="LKT-947" />
        </Address>
        <Address>
            <ID ID="d1e11" />
            <City City="Sydney" />
            <Postcode Postcode="OKU-846" />
        </Address>
    </AddressSegment>
</Application>

注意使用身份变换，这是最根本的转变。

答案 2 :(得分：0)

  

创建唯一ID并在同一文档中引用它们

如果您需要为元素创建唯一ID，请使用generate-id() 功能。请注意，此函数为输入文档中的给定元素生成唯一标识符。因此，如果在同一元素上调用该函数，您将始终获得相同的ID 。这真的是你想要的。

为简单起见，在以下示例转换中，我已将模板应用于AddressDetails两次，每次都使用不同的模式。

通过在generate-id()节点上应用AddressDetails函数，请注意输出中id的正确生成和引用。

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

    <xsl:template match="ContactDetails">
        <Application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
            <ContactDetails>
                <xsl:apply-templates select="AddressDetails" mode="contact"/>
            </ContactDetails>
            <AddressSegment>
                <xsl:apply-templates select="AddressDetails" mode="segment"/>
            </AddressSegment>
        </Application>
    </xsl:template>

    <xsl:template match="AddressDetails" mode="contact">
        <xsl:copy>
            <xsl:copy-of select="@*"/>
            <AddressRef ReferedID="{generate-id(.)}"/>
        </xsl:copy>
    </xsl:template>

    <xsl:template match="AddressDetails" mode="segment">
        <Address>
            <ID ID="{generate-id(.)}"/>
            <xsl:copy-of select="Address/*"/>
        </Address>
    </xsl:template>

</xsl:stylesheet>

当应用于问题中提供的输入时，返回：

<Application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <ContactDetails>
      <AddressDetails StartDate="1992-04-03" Type="Previous">
         <AddressRef ReferedID="d1e3"/>
      </AddressDetails>
      <AddressDetails StartDate="1982-09-19" Type="Current">
         <AddressRef ReferedID="d1e13"/>
      </AddressDetails>
      <AddressDetails StartDate="1977-05-27" Type="Mailing">
         <AddressRef ReferedID="d1e23"/>
      </AddressDetails>
   </ContactDetails>
   <AddressSegment>
      <Address>
         <ID ID="d1e3"/>
         <City City="Wien"/>
         <Postcode Postcode="LSP-123"/>
      </Address>
      <Address>
         <ID ID="d1e13"/>
         <City City="Toronto"/>
         <Postcode Postcode="LKT-947"/>
      </Address>
      <Address>
         <ID ID="d1e23"/>
         <City City="Sydney"/>
         <Postcode Postcode="OKU-846"/>
      </Address>
   </AddressSegment>
</Application>
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