根据包含子实体的元素值合并 XML 条消息

Question

我需要根据元素值组合 XML 个节点并为某些元素创建子节点

样本输入XML：

<?xml version="1.0" encoding="UTF-8"?>
<orders>
    <Order>
        <OrderNumber>SO0000001</OrderNumber>
        <!--All Orders with same OrderNumber are combines-->
        <OrderLineNumber>000010</OrderLineNumber>
        <!--Product sequence number in order-->
        <OrderDate>20181026090000</OrderDate>
        <CustomerNumber>0000112233</CustomerNumber>
        <CustomerName>Customer name 01</CustomerName>
        <Quantity>1</Quantity>
        <SaleRevenue>20</SaleRevenue>
        <UnitPrice>15</UnitPrice>
        <Currency>USD</Currency>
        <ProductNumber>ZZZ000BBB</ProductNumber>
        <!--Product number in order-->
        <ProductDescription>Product 01</ProductDescription>
    </Order>
    <Order>
        <OrderNumber>SO0000001</OrderNumber> 
        <OrderLineNumber>000020</OrderLineNumber>
        <OrderDate>20181026090000</OrderDate>
        <CustomerNumber>0000112233</CustomerNumber>
        <CustomerName>Customer name 01</CustomerName>
        <Quantity>2</Quantity>
        <SaleRevenue>20</SaleRevenue>
        <UnitPrice>5</UnitPrice>
        <Currency>USD</Currency>
        <ProductNumber>ZZZ000AAA</ProductNumber>
        <ProductDescription>Product 02</ProductDescription>
    </Order>
    <Order>
        <OrderNumber>SO0000999</OrderNumber>
        <OrderLineNumber>000010</OrderLineNumber>
        <OrderDate>20181026090100</OrderDate>
        <CustomerNumber>0000778899</CustomerNumber>
        <CustomerName>Customer name 02</CustomerName>
        <Quantity>1</Quantity>
        <SaleRevenue>60</SaleRevenue>
        <UnitPrice>10</UnitPrice>
        <Currency>USD</Currency>
        <ProductNumber>ABC00111</ProductNumber>
        <ProductDescription>Product 03</ProductDescription>
    </Order>
    <Order>
        <OrderNumber>SO0000999</OrderNumber>
        <OrderLineNumber>000020</OrderLineNumber>
        <OrderDate>20181026090100</OrderDate>
        <CustomerNumber>0000778899</CustomerNumber>
        <CustomerName>Customer name 02</CustomerName>
        <Quantity>2</Quantity>
        <SaleRevenue>60</SaleRevenue>
        <UnitPrice>20</UnitPrice>
        <Currency>USD</Currency>
        <ProductNumber>ABC00222</ProductNumber>
        <ProductDescription>Product 04</ProductDescription>
    </Order>
    <Order>
        <OrderNumber>SO0000999</OrderNumber>
        <OrderLineNumber>0000230</OrderLineNumber>
        <OrderDate>20181026090100</OrderDate>
        <CustomerNumber>0000778899</CustomerNumber>
        <CustomerName>Customer name 02</CustomerName>
        <Quantity>3</Quantity>
        <SaleRevenue>60</SaleRevenue>
        <UnitPrice>30</UnitPrice>
        <Currency>USD</Currency>
        <ProductNumber>ABC00333</ProductNumber>
        <ProductDescription>Product 05</ProductDescription>
    </Order>
</orders>

由此我喜欢使用 XSLT 1.0 或 2.0 创建以下输出

<?xml version="1.0" encoding="UTF-8"?>
<orders>
    <Order>
        <OrderNumber>SO0000001</OrderNumber>    
        <OrderDate>20181026090000</OrderDate>
        <CustomerNumber>0000112233</CustomerNumber>
        <CustomerName>Customer name 01</CustomerName>
        <SaleRevenue>20</SaleRevenue>
        <products>
            <Product>
                <OrderLineNumber>000010</OrderLineNumber>
                <UnitPrice>15</UnitPrice>
                <Currency>USD</Currency>
                <Quantity>1</Quantity>
                <ProductNumber>ZZZ000BBB</ProductNumber>
                <ProductDescription>Product 01</ProductDescription>
            </Product>
            <Product>
                <OrderLineNumber>000020</OrderLineNumber>
                <Quantity>2</Quantity>
                <UnitPrice>5</UnitPrice>
                <Currency>USD</Currency>
                <ProductNumber>ZZZ000AAA</ProductNumber>
                <ProductDescription>Product 02</ProductDescription>
            </Product>
        </products>
    </Order>
    <Order>
        <OrderNumber>SO0000999</OrderNumber>
        <OrderDate>20181026090100</OrderDate>
        <CustomerNumber>0000778899</CustomerNumber>
        <CustomerName>Customer name 02</CustomerName>
        <products>
            <Product>
                <OrderLineNumber>000010</OrderLineNumber>
                <Quantity>1</Quantity>
                <UnitPrice>10</UnitPrice>
                <Currency>USD</Currency>
                <ProductNumber>ABC00111</ProductNumber>
                <ProductDescription>Product 03</ProductDescription>
            </Product>
            <Product>
                <OrderLineNumber>000020</OrderLineNumber>
                <Quantity>2</Quantity>
                <UnitPrice>20</UnitPrice>
                <Currency>USD</Currency>
                <ProductNumber>ABC00222</ProductNumber>
                <ProductDescription>Product 04</ProductDescription>
            </Product>
            <Product>
                <Quantity>3</Quantity>
                <UnitPrice>30</UnitPrice>
                <Currency>USD</Currency>
                <ProductNumber>ABC00333</ProductNumber>
                <ProductDescription>Product 05</ProductDescription>
            </Product>
        </products>
    </Order>
</orders>

我想我已经接近了，但可以让最后一块工作。我无法将产品包含在订单中，因为我正在使用 for-each-group（我认为）。

这是我当前的 XSLT

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" version="1.0" indent="yes"/>
    <xsl:template match="orders">
        <orders>
            <xsl:for-each-group select="Order" group-by="OrderNumber">  
                <Order>
                    <xsl:if test="current-group()[2]">
                        <!--<OrderNumber name="{OrderNumber}"/>--> <!--products node-->
                        <xsl:copy-of select="OrderNumber"/>
                        <!--<xsl:copy-of select="OrderLineNumber"/>--> <!--products node-->
                        <xsl:copy-of select="OrderDate"/>
                        <xsl:copy-of select="CustomerNumber"/>
                        <xsl:copy-of select="CustomerName"/>
                        <!--<xsl:copy-of select="Quantity"/>--> <!--products node-->
                        <xsl:copy-of select="SaleRevenue"/>
                        <!--<xsl:copy-of select="UnitPrice"/>--> <!--products node-->
                        <xsl:copy-of select="Currency"/>
                        <!--<xsl:copy-of select="LineStatus"/>--> <!--products node-->
                        <!--<xsl:copy-of select="ProductNumber"/>--> <!--products node-->
                        <!--<xsl:copy-of select="ModelNumber"/>--> <!--products node-->
                        <!--<xsl:copy-of select="SerialNumber"/>--> <!--products node-->
                        <!--<xsl:copy-of select="ProductDescription"/>--> <!--products node-->
                    </xsl:if>
                </Order>
            </xsl:for-each-group>
            <xsl:if test="Order">
            <products>
                <xsl:for-each select="Order"> 
                    <product>
                        <xsl:copy-of select="OrderLineNumber"/>
                        <xsl:copy-of select="Quantity"/>
                        <xsl:copy-of select="UnitPrice"/>
                        <xsl:copy-of select="LineStatus"/>
                        <xsl:copy-of select="ProductNumber"/>
                        <xsl:copy-of select="ProductDescription"/>
                    </product>
                </xsl:for-each>
            </products>
            </xsl:if>
        </orders>
    </xsl:template>
</xsl:stylesheet>

我的分组工作正常，但需要将找到的所有产品数据添加到创建的子节点产品中。我不是 XSLT 专家，不确定我是否走在正确的道路上。

Answer 1

如果您希望产品嵌套在 order 元素中，您需要在创建 <order> 元素时移动相关代码块。我也看不出 current-group()[2] 上的测试试图达到什么目的，但我认为你真的不需要它。

试试这个 XSLT（其中包含复制现有节点的更短方法）

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" version="1.0" indent="yes"/>
  <xsl:template match="orders">
    <orders>
      <xsl:for-each-group select="Order" group-by="OrderNumber">  
        <Order>
          <xsl:copy-of select="OrderNumber,OrderDate,CustomerNumber,CustomerName,SaleRevenue"/>
          <products>
            <xsl:for-each select="current-group()"> 
              <product>
                <xsl:copy-of select="OrderLineNumber,UnitPrice,Currency,Quantity,ProductNumber,ProductDescription"/>
              </product>
            </xsl:for-each>
          </products>          
        </Order>
      </xsl:for-each-group>
    </orders>
  </xsl:template>
</xsl:stylesheet>

Answer 2

将 products xsl:for-each 移动到 xsl:for-each-group 中，并添加到 Order 元素的绝对路径。所以将 XSLT 更改为

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" version="1.0" indent="yes"/>
    <xsl:template match="orders">
        <orders>
            <xsl:for-each-group select="Order" group-by="OrderNumber">  
                <Order>
                    <xsl:if test="current-group()[2]">
                        <!--<OrderNumber name="{OrderNumber}"/>--> <!--products node-->
                        <xsl:copy-of select="OrderNumber"/>
                        <!--<xsl:copy-of select="OrderLineNumber"/>--> <!--products node-->
                        <xsl:copy-of select="OrderDate"/>
                        <xsl:copy-of select="CustomerNumber"/>
                        <xsl:copy-of select="CustomerName"/>
                        <!--<xsl:copy-of select="Quantity"/>--> <!--products node-->
                        <xsl:copy-of select="SaleRevenue"/>
                        <!--<xsl:copy-of select="UnitPrice"/>--> <!--products node-->
                        <xsl:copy-of select="Currency"/>
                        <!--<xsl:copy-of select="LineStatus"/>--> <!--products node-->
                        <!--<xsl:copy-of select="ProductNumber"/>--> <!--products node-->
                        <!--<xsl:copy-of select="ModelNumber"/>--> <!--products node-->
                        <!--<xsl:copy-of select="SerialNumber"/>--> <!--products node-->
                        <!--<xsl:copy-of select="ProductDescription"/>--> <!--products node-->
                        <!-- Moved to here -->
                        <products>
                            <xsl:for-each select="/orders/Order[OrderNumber = current()/OrderNumber]"> 
                                <product>
                                    <xsl:copy-of select="OrderLineNumber"/>
                                    <xsl:copy-of select="Quantity"/>
                                    <xsl:copy-of select="UnitPrice"/>
                                    <xsl:copy-of select="Currency"/>
                                    <xsl:copy-of select="LineStatus"/>
                                    <xsl:copy-of select="ProductNumber"/>
                                    <xsl:copy-of select="ProductDescription"/>
                                </product>
                            </xsl:for-each>
                        </products>
                    </xsl:if>
                </Order>
            </xsl:for-each-group>
            <xsl:if test="Order">
                <!-- Moved for-each from here to above ^^^ -->
            </xsl:if>
        </orders>
    </xsl:template>
</xsl:stylesheet>

这将为您提供所需的输出。

根据包含子实体的元素值合并 XML 条消息

Combine XML Messages based on element value including sub-entities

xml

xslt

xslt-2.0

xslt-1.0

xslt-grouping