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Xml XSLT分组和求和_Xml_Xslt_Xslt Grouping - Fatal编程技术网

Xml XSLT分组和求和

Xml XSLT分组和求和,xml,xslt,xslt-grouping,Xml,Xslt,Xslt Grouping,我是XSLT新手,需要根据每个订单的ID计算项目的总价(数量*单价),并使用XSLT 1.0将其打印在每个项目组的末尾。 下面是我的示例XML <Orders> <Order> <Reference>234</Reference> <Item> <ID>10</ID> <Quantity>1</Quantity> <Un

我是XSLT新手,需要根据每个订单的ID计算项目的总价(数量*单价),并使用XSLT 1.0将其打印在每个项目组的末尾。 下面是我的示例XML

<Orders>
<Order>
    <Reference>234</Reference>
    <Item>
        <ID>10</ID>
        <Quantity>1</Quantity>
        <UnitPrice>2</UnitPrice>
    </Item>
    <Item>
        <ID>10</ID>
        <Quantity>2</Quantity>
        <UnitPrice>3</UnitPrice>
    </Item>
    <Item>
        <ID>10</ID>
        <Quantity>2</Quantity>
        <UnitPrice>2</UnitPrice>
    </Item>
    <Item>
        <ID>20</ID>
        <Quantity>2</Quantity>
        <UnitPrice>4</UnitPrice>
    </Item>
</Order>
<Order>
    <Reference>456</Reference>
    <Item>
        <ID>10</ID>
        <Quantity>2</Quantity>
        <UnitPrice>2</UnitPrice>
    </Item>
    <Item>
        <ID>20</ID>
        <Quantity>2</Quantity>
        <UnitPrice>2</UnitPrice>
    </Item>
</Order>
</Orders>

234
10
1.
2.
10
2.
3.
10
2.
2.
20
2.
4.
456
10
2.
2.
20
2.
2.
下面是所需的输出XML

<SAPOrders>
<Order>
    <Reference>234</Reference>
    <Item>
        <Quantity>1</Quantity>
        <UnitPrice>2</UnitPrice>
    </Item>
    <Item>
        <Quantity>2</Quantity>
        <UnitPrice>3</UnitPrice>
    </Item>
    <Item>
        <Quantity>2</Quantity>
        <UnitPrice>2</UnitPrice>
        <Total>12</Notes>
    </Item>
    <Item>
        <Quantity>2</Quantity>
        <UnitPrice>4</UnitPrice>
        <Total>8</Notes>
    </Item>
</Order>
<Order>
    <Reference>456</Reference>
    <Item>
        <Quantity>2</Quantity>
        <UnitPrice>2</UnitPrice>
        <Total>4</Notes>
    </Item>
    <Item>
        <Quantity>2</Quantity>
        <UnitPrice>2</UnitPrice>
        <Total>4</Total>
    </Item>
</Order>
</SAPOrders>

234
1.
2.
2.
3.
2.
2.
12
2.
4.
8.
456
2.
2.
4.
2.
2.
4.

这里有两个问题:(1)根据订单和项目ID对项目进行分组,以及(2)计算每个此类组的小计

第一个问题相对简单,可以使用该方法解决。第二个问题更难,因为XSLT1.0不允许对计算结果求和

下面的样式表首先预计算每个项目的扩展价格,并将结果存储在一个变量中。然后对变量进行操作,对项目进行分组并对每组进行小计

XSLT1.0

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
xmlns:exsl="http://exslt.org/common"
extension-element-prefixes="exsl">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>

<xsl:key name="item" match="Item" use="@key" />

<xsl:template match="/Orders">
    <!-- first pass -->
    <xsl:variable name="first-pass">
        <xsl:for-each select="Order">
            <Order>
                <xsl:copy-of select="Reference"/>
                <xsl:for-each select="Item">
                    <Item key="{concat(../Reference, '|', ID)}" extPrice="{Quantity * UnitPrice}">
                        <xsl:copy-of select="*"/>
                    </Item>
                </xsl:for-each>
            </Order>
        </xsl:for-each>
    </xsl:variable>
    <!-- output -->
    <SAPOrders>
        <xsl:for-each select="exsl:node-set($first-pass)/Order">
            <xsl:copy>
                <xsl:copy-of select="Reference"/>
                <!-- for each unique item in this order -->
                <xsl:for-each select="Item[count(. | key('item', @key)[1]) = 1]">
                    <!-- list the items in this group -->
                    <xsl:for-each select="key('item', @key)">
                        <Item>
                            <xsl:copy-of select="Quantity | UnitPrice"/>
                            <!-- add the subtotal of this group -->
                            <xsl:if test="position()=last()">
                                <Total>
                                    <xsl:value-of select="sum(key('item', @key)/@extPrice)" />
                                </Total>
                            </xsl:if>
                        </Item>
                    </xsl:for-each>
                </xsl:for-each>
            </xsl:copy>
        </xsl:for-each> 
    </SAPOrders>
</xsl:template>

</xsl:stylesheet>


演示:

看看哪一个是近距离的duplicate@MichaelKay您指向的是XSLT 2.0解决方案。@tojira为什么输出中没有项ID?@michael.hor257k输出xml有逻辑,不会只是复制。我不能说我理解您的答复,但如果您希望这样做。。。