Question

按照我之前的问题：Sort complex XML structure by nested attribute using XSLT（设置不当）道歉。

我很好奇你将如何仅列出标准销售的十大地点。

这可以在apply-templates中使用，因为我使用它有困难

<xsl:if test="position() &lt;= 10">

Answer 1

在谓词中定义它，例如：

<xsl:apply-templates select="item[position() &lt;= 10]" />

Answer 2

好吧，通常我会分两步完成。但在这个简单的例子中，您可以使用变量作为临时步骤。以这种方式更改第一个问题所获得的模板：

<xsl:template match="CompanyStats">
    <xsl:copy>
        <xsl:copy-of select="@*"/>
        <!-- sorting of the CompanyLocation in a temporary variable -->
        <xsl:variable name="CompanyLocationSorted">
            <xsl:apply-templates select="CompanyLocation">
                <xsl:sort data-type="number" select="UserContent/StandardSales/Sales" order="descending"/>
            </xsl:apply-templates>
        </xsl:variable>
        <!-- copies just the first 10 of the sorted CompanyLocation-->
        <xsl:copy-of select="$CompanyLocationSorted/CompanyLocation[position() &lt;= 10]"/>
    </xsl:copy>
</xsl:template>

Answer 3

这是一个简单，完整的解决方案，这是一次通过：

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" indent="yes"/>
    <xsl:strip-space elements="*"/>

    <xsl:param name="pTopN" select="2"/>

    <xsl:template match="CompanyStats">
        <xsl:copy>
            <xsl:copy-of select="@*"/>
            <xsl:apply-templates select="CompanyLocation">
                <xsl:sort data-type="number" select="UserContent/StandardSales/Sales" order="descending"/>
            </xsl:apply-templates>
        </xsl:copy>
    </xsl:template>

    <xsl:template match="CompanyLocation">
      <xsl:if test="not(position() > $pTopN)">
       <xsl:copy-of select="."/>
      </xsl:if>
    </xsl:template>
</xsl:stylesheet>

将此转换应用于以下XML文档（包含三个CompanyLocation元素）时：

<Company>
    <CompanyStats>
        <CompanyLocation id="London">
            <OfficeID>1</OfficeID>
            <Totalworkers>20</Totalworkers>
            <NoCleaners>2</NoCleaners>
            <TopSales>
                <UserID>4</UserID>
                <Sales>43</Sales>
                <Description> Highest sales this quater</Description>
            </TopSales>
            <LowestSales>
                <UserID>12</UserID>
                <Sales>26</Sales>
                <Description> Lowest sales this quater</Description>
            </LowestSales>
            <UserContent>
                <ID>4</ID>
                <FirstName>Jack</FirstName>
                <Surname>Black</Surname>
                <StartDate>11/11/2011</StartDate>
                <StandardSales>
                    <SSID>0</SSID>
                    <Sales>64</Sales>
                    <SalesManager>Steve Hewitt</SalesManager>
                </StandardSales>
                <BusinessSales>
                    <BSID>0</BSID>
                    <Sales>64</Sales>
                    <SalesManager>Steve Hewitt</SalesManager>
                </BusinessSales>
            </UserContent>
        </CompanyLocation>
        <CompanyLocation id="Paris">
            <OfficeID>1</OfficeID>
            <Totalworkers>20</Totalworkers>
            <NoCleaners>2</NoCleaners>
            <TopSales>
                <UserID>4</UserID>
                <Sales>43</Sales>
                <Description> Highest sales this quater</Description>
            </TopSales>
            <LowestSales>
                <UserID>12</UserID>
                <Sales>26</Sales>
                <Description> Lowest sales this quater</Description>
            </LowestSales>
            <UserContent>
                <ID>4</ID>
                <FirstName>Jack</FirstName>
                <Surname>Black</Surname>
                <StartDate>11/11/2011</StartDate>
                <StandardSales>
                    <SSID>0</SSID>
                    <Sales>122</Sales>
                    <SalesManager>Steve Hewitt</SalesManager>
                </StandardSales>
                <BusinessSales>
                    <BSID>0</BSID>
                    <Sales>64</Sales>
                    <SalesManager>Steve Hewitt</SalesManager>
                </BusinessSales>
            </UserContent>
        </CompanyLocation>
        <CompanyLocation id="Berlin">
            <OfficeID>1</OfficeID>
            <Totalworkers>20</Totalworkers>
            <NoCleaners>2</NoCleaners>
            <TopSales>
                <UserID>4</UserID>
                <Sales>43</Sales>
                <Description> Highest sales this quater</Description>
            </TopSales>
            <LowestSales>
                <UserID>12</UserID>
                <Sales>26</Sales>
                <Description> Lowest sales this quater</Description>
            </LowestSales>
            <UserContent>
                <ID>4</ID>
                <FirstName>Jack</FirstName>
                <Surname>Black</Surname>
                <StartDate>11/11/2011</StartDate>
                <StandardSales>
                    <SSID>0</SSID>
                    <Sales>12</Sales>
                    <SalesManager>Steve Hewitt</SalesManager>
                </StandardSales>
                <BusinessSales>
                    <BSID>0</BSID>
                    <Sales>64</Sales>
                    <SalesManager>Steve Hewitt</SalesManager>
                </BusinessSales>
            </UserContent>
        </CompanyLocation>
    </CompanyStats>
</Company>

顶部（排序后）其中两个产生于输出：

<CompanyStats>
   <CompanyLocation id="Paris">
      <OfficeID>1</OfficeID>
      <Totalworkers>20</Totalworkers>
      <NoCleaners>2</NoCleaners>
      <TopSales>
         <UserID>4</UserID>
         <Sales>43</Sales>
         <Description> Highest sales this quater</Description>
      </TopSales>
      <LowestSales>
         <UserID>12</UserID>
         <Sales>26</Sales>
         <Description> Lowest sales this quater</Description>
      </LowestSales>
      <UserContent>
         <ID>4</ID>
         <FirstName>Jack</FirstName>
         <Surname>Black</Surname>
         <StartDate>11/11/2011</StartDate>
         <StandardSales>
            <SSID>0</SSID>
            <Sales>122</Sales>
            <SalesManager>Steve Hewitt</SalesManager>
         </StandardSales>
         <BusinessSales>
            <BSID>0</BSID>
            <Sales>64</Sales>
            <SalesManager>Steve Hewitt</SalesManager>
         </BusinessSales>
      </UserContent>
   </CompanyLocation>
   <CompanyLocation id="London">
      <OfficeID>1</OfficeID>
      <Totalworkers>20</Totalworkers>
      <NoCleaners>2</NoCleaners>
      <TopSales>
         <UserID>4</UserID>
         <Sales>43</Sales>
         <Description> Highest sales this quater</Description>
      </TopSales>
      <LowestSales>
         <UserID>12</UserID>
         <Sales>26</Sales>
         <Description> Lowest sales this quater</Description>
      </LowestSales>
      <UserContent>
         <ID>4</ID>
         <FirstName>Jack</FirstName>
         <Surname>Black</Surname>
         <StartDate>11/11/2011</StartDate>
         <StandardSales>
            <SSID>0</SSID>
            <Sales>64</Sales>
            <SalesManager>Steve Hewitt</SalesManager>
         </StandardSales>
         <BusinessSales>
            <BSID>0</BSID>
            <Sales>64</Sales>
            <SalesManager>Steve Hewitt</SalesManager>
         </BusinessSales>
      </UserContent>
   </CompanyLocation>
</CompanyStats>

<强>解释：

要处理的所需顶级元素数量在global / external参数$pTopN中指定。这样，当在变换之外设置此参数时，转换可以用于任何想要的数字，而无需任何修改。
关键时刻位于xsl:apply-templates，其中有xsl:sort个孩子。这会导致模板应用于已排序的节点列表。
在匹配模板中，有一个条件可以将position()与$pTopN参数进行比较，并且仅当当前位置未超过该数量时才执行处理。

XSLT排名前50位

3 个答案: