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在XSLT 2.0中对变量进行分组(Grouping of variables in XSLT 2.0)

 对于具有相同<CtryCd>值的每个<LineDetail>节点，并使用<Amt>的总和填充1 <LineDetail> <Amt> 。 但是，我还需要检查<SI>和<TI>节点。 求和的输出标记将基于<SI>和<TI>节点。 如果<SI>和<TI>的值均为假，则生成<Amt2> ，而如果<SI>值为真且<TI>为假，则生成<Amt2> 。 我创建了一个XSLT并且已经得到了总结。 但是我的输出中仍然缺少一些东西。  
 这是一个示例XML：  
<Record>
<Data>
    <Process>
        <Header>
            <ID>22-BBB</ID>
            <Date>2017-02-14</Date>
            <ContactName>Abegail</ContactName>
            <!-- some other elements -->
        </Header>
        <Detail>
            <ID>22-CCC</ID>
            <RequestedDate>2017-02-14</RequestedDate>
            <!-- some other elements -->
            <LineDetail>
                <CtryCd>AF</CtryCd>
                <SI>false</SI>
                <TI>false</TI>
                <Amt>11.11</Amt>
            </LineDetail>
            <LineDetail>
                <CtryCd>SE</CtryCd>
                <SI>true</SI>
                <TI>false</TI>
                <Amt>22.22</Amt>
            </LineDetail>
            <LineDetail>
                <CtryCd>AF</CtryCd>
                <SI>false</SI>
                <TI>false</TI>
                <Amt>33.33</Amt>
            </LineDetail>
            <LineDetail>
                <CtryCd>AF</CtryCd>
                <SI>true</SI>
                <TI>false</TI>
                <Amt>55.55</Amt>
            </LineDetail>       
        </Detail>
    </Process>
</Data>
</Record>
 
 生成的输出：  
<Record>
<Data>
    <Process>
        <Header>
            <ID>22-BBB</ID>
            <Date>2017-02-14</Date>
            <ContactName>Abegail</ContactName>
            <!-- some other elements -->
        </Header>
        <Detail>
            <LineDetail>
                <CtryCd>AF</CtryCd>
                <Amt1>99.99</Amt1>
            </LineDetail>
        </Detail>
        <Detail>
            <LineDetail>
                <C<Amt2>22.22</Amt2>
            </LineDetail>
        </Detail>
    </Process>
</Data>
</Record>
 
 预期产量：  
<Record>
<Data>
    <Process>
        <Header>
            <ID>22-BBB</ID>
            <Date>2017-02-14</Date>
            <ContactName>Abegail</ContactName>
            <!-- some other elements -->
        </Header>
        <Detail>
            <ID>22-CCC</ID>
            <RequestedDate>2017-02-14</RequestedDate>
            <!-- some other elements -->
            <LineDetail>
                <CtryCd>AF</CtryCd>
                <Amt1>44.44</<Amt1>
                <Amt2>55.55</Amt2>
            </LineDetail>
            <LineDetail>
                <CtryCd>SE</CtryCd>
                <Amt1>0</<Amt1>
                <Amt2>22.22</Amt2>
            </LineDetail>           
        </Detail>
    </Process>
</Data>
</Record>
 
 XSLT：  
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:key name="CtryCd" match="LineDetail" use="CtryCd"/>
<!-- identity transform -->
<xsl:template match="@*|node()">
    <xsl:copy>
        <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
</xsl:template>
<xsl:template match="Detail">
    <xsl:for-each-group select="LineDetail" group-by="CtryCd">
        <Detail>
            <LineDetail>
                <CtryCd>
                    <xsl:value-of select="CtryCd"/>
                </CtryCd>
                <xsl:if test="lower-case(SI)='false' and lower-case(TI)='false'">
                    <Amt1>
                        <xsl:value-of select="sum(current-group()/Amt)"/>
                    </Amt1>
                <xsl:if test="lower-case(SI)='true' and lower-case(TI)='false'">
                    <Amt2>
                        <xsl:value-of select="sum(current-group()/Amt)"/>
                    </Amt2>
                </xsl:if>
                </xsl:if>
                <xsl:if test="lower-case(SI)='true' and lower-case(TI)='false'">
                    <Amt2>
                        <xsl:value-of select="sum(current-group()/Amt)"/>
                    </Amt2>
                </xsl:if>
            </LineDetail>
        </Detail>
    </xsl:for-each-group>
</xsl:template>
</xsl:stylesheet>

For each <LineDetail> node that has the same value of <CtryCd> and populates 1 <LineDetail> with the summation of <Amt>. But, I need to check also the <SI> and <TI> node. The output tag of the summation will be based from the <SI> and <TI> node. The <Amt1> will generate if the value of <SI> and <TI> are both false, while <Amt2> will generate if the value of <SI> is true and <TI> is false. I created an XSLT and already got the summation. But there's still something missing in my output. 
This is a sample XML: 
<Record>
<Data>
    <Process>
        <Header>
            <ID>22-BBB</ID>
            <Date>2017-02-14</Date>
            <ContactName>Abegail</ContactName>
            <!-- some other elements -->
        </Header>
        <Detail>
            <ID>22-CCC</ID>
            <RequestedDate>2017-02-14</RequestedDate>
            <!-- some other elements -->
            <LineDetail>
                <CtryCd>AF</CtryCd>
                <SI>false</SI>
                <TI>false</TI>
                <Amt>11.11</Amt>
            </LineDetail>
            <LineDetail>
                <CtryCd>SE</CtryCd>
                <SI>true</SI>
                <TI>false</TI>
                <Amt>22.22</Amt>
            </LineDetail>
            <LineDetail>
                <CtryCd>AF</CtryCd>
                <SI>false</SI>
                <TI>false</TI>
                <Amt>33.33</Amt>
            </LineDetail>
            <LineDetail>
                <CtryCd>AF</CtryCd>
                <SI>true</SI>
                <TI>false</TI>
                <Amt>55.55</Amt>
            </LineDetail>       
        </Detail>
    </Process>
</Data>
</Record>
 
Generated output: 
<Record>
<Data>
    <Process>
        <Header>
            <ID>22-BBB</ID>
            <Date>2017-02-14</Date>
            <ContactName>Abegail</ContactName>
            <!-- some other elements -->
        </Header>
        <Detail>
            <LineDetail>
                <CtryCd>AF</CtryCd>
                <Amt1>99.99</Amt1>
            </LineDetail>
        </Detail>
        <Detail>
            <LineDetail>
                <C<Amt2>22.22</Amt2>
            </LineDetail>
        </Detail>
    </Process>
</Data>
</Record>
 
Expected output: 
<Record>
<Data>
    <Process>
        <Header>
            <ID>22-BBB</ID>
            <Date>2017-02-14</Date>
            <ContactName>Abegail</ContactName>
            <!-- some other elements -->
        </Header>
        <Detail>
            <ID>22-CCC</ID>
            <RequestedDate>2017-02-14</RequestedDate>
            <!-- some other elements -->
            <LineDetail>
                <CtryCd>AF</CtryCd>
                <Amt1>44.44</<Amt1>
                <Amt2>55.55</Amt2>
            </LineDetail>
            <LineDetail>
                <CtryCd>SE</CtryCd>
                <Amt1>0</<Amt1>
                <Amt2>22.22</Amt2>
            </LineDetail>           
        </Detail>
    </Process>
</Data>
</Record>
 
XSLT: 
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:key name="CtryCd" match="LineDetail" use="CtryCd"/>
<!-- identity transform -->
<xsl:template match="@*|node()">
    <xsl:copy>
        <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
</xsl:template>
<xsl:template match="Detail">
    <xsl:for-each-group select="LineDetail" group-by="CtryCd">
        <Detail>
            <LineDetail>
                <CtryCd>
                    <xsl:value-of select="CtryCd"/>
                </CtryCd>
                <xsl:if test="lower-case(SI)='false' and lower-case(TI)='false'">
                    <Amt1>
                        <xsl:value-of select="sum(current-group()/Amt)"/>
                    </Amt1>
                <xsl:if test="lower-case(SI)='true' and lower-case(TI)='false'">
                    <Amt2>
                        <xsl:value-of select="sum(current-group()/Amt)"/>
                    </Amt2>
                </xsl:if>
                </xsl:if>
                <xsl:if test="lower-case(SI)='true' and lower-case(TI)='false'">
                    <Amt2>
                        <xsl:value-of select="sum(current-group()/Amt)"/>
                    </Amt2>
                </xsl:if>
            </LineDetail>
        </Detail>
    </xsl:for-each-group>
</xsl:template>
</xsl:stylesheet>

原文：https://stackoverflow.com/questions/42240723

更新时间：2023-08-01 06:08

最满意答案

 它都是非常实现的定义，但通常，编译器会将Derived为  
Base1: vptr
Base1: data
Base2: vptr
Base2: data
Derived: data
 
 Derived的地址是整体的地址，因此物理地址与Base1地址相同。 Derived的vtable的初始部分与Base1的初始部分相同，而Base1：vptr实际上将指向Derived的vtable。  
 如果在声明中反转Base1和Base2 ，编译器将在上面反转它们的角色。 （通常。标准中没有任何内容可以阻止编译器按字母顺序排列基数，或者将派生数据放在第一位，但我从来没有听说过编译器会这样做。） 

It's all very implementation defined, but typically, a compiler will lay out Derived as 
Base1: vptr
Base1: data
Base2: vptr
Base2: data
Derived: data
 
The address of the Derived is the address of the whole, thus the same physical address as that of Base1. The initial part of the vtable for Derived will be identical with that of Base1, and the Base1: vptr will in fact point to the vtable of Derived. 
If you inverse Base1 and Base2 in the declaration, the compiler will inverse their roles above. (Typically. There's nothing in the standard which would prevent the compiler from arranging the bases in alphabetical order, or putting the derived data first, but I've never heard of a compiler which did so.)

在XSLT 2.0中对变量进行分组(Grouping of variables in XSLT 2.0)

最满意答案

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