Question

我有两个参数，一个是分隔符，第二个是子 string，如果p则substring- before substring-after。

我的输入XML。

<?xml version="1.0" encoding="iso-8859-1"?>
<results>
    <result>
        <Store>0180|1</Store>
    </result>
    <result>
        <Store>0180|2</Store>
    </result>
    <result>
        <Store>0181</Store>
    </result>
    <result>
        <Store>0183</Store>
    </result>
    <result>
        <Store>abc</Store>
    </result>
    <result>
        <Store>def</Store>
    </result>
    <result>
        <Store>0181|2</Store>
    </result>
    <result>
        <Store>0180|3</Store>
    </result>
    <result>
        <Store>0181|1</Store>
    </result>

</results>

Xslt if fix = p then substring-before否则substring-after on key：

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl">
    <xsl:output method="xml" indent="yes"/>
    <xsl:param name="name" select="'|'"/>
    <xsl:param name="fix"  select="'p'"/>
    <xsl:choose>        
        <xsl:when fix='p'>
 <xsl:key name="groups" match="/results/result" use="substring-before(Store,'|')" />

        </xsl:when>
<otherwise>
      <xsl:key name="groups" match="/results/result" use="substring-after(Store,'|')" />

</otherwise>
    </xsl:choose>       

        <
        <xsl:template match="/results">
        <xsl:choose>
            <xsl:when test="$fix='p'">
                <xsl:apply-templates select="result[generate-id() = generate-id(key('groups', substring-before(Store,'|'))[1])]"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:apply-templates select="result[generate-id() = generate-id(key('groups', substring-after(Store,'|'))[1])]"/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:template>
    <xsl:template match="result">
        <xsl:choose>
            <xsl:when test="$fix='p'">
                <xsl:for-each select="key('groups', substring-before(Store,'|'))">
                    <xsl:choose>
                        <xsl:when test="contains(Store,'|')">
                            <td>
                                <xsl:value-of select="substring-before(Store,'|')"/>
                                <xsl:value-of select="'|'"/>
                                <xsl:value-of select="position()"/>
                            </td>
                        </xsl:when>
                        <xsl:otherwise>
                            <td>
                                <xsl:value-of select="Store"/>
                            </td>
                        </xsl:otherwise>
                    </xsl:choose>
                </xsl:for-each>
            </xsl:when>
            <xsl:otherwise>
                <xsl:for-each select="key('groups', substring-before(Store,'|'))">
                    <xsl:choose>
                        <xsl:when test="contains(Store,'|')">
                            <td>
                                <xsl:value-of select="substring-after(Store,'|')"/>
                                <xsl:value-of select="'|'"/>
                                <xsl:value-of select="position()"/>
                            </td>
                        </xsl:when>
                        <xsl:otherwise>
                            <td>
                                <xsl:value-of select="Store"/>
                            </td>
                        </xsl:otherwise>
                    </xsl:choose>
                </xsl:for-each>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:template>
</xsl:stylesheet>

Answer 1

xsl:key定义必须位于样式表的顶层相反，xsl:choose不能处于最高级别。

以此为出发点;

XSLT 1.0

<xsl:stylesheet version="1.0" 
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:param name="key-direction" select="'before'"/>

<xsl:key name="key-before" match="result" use="substring-before(Store, '|')"/>
<xsl:key name="key-after" match="result" use="substring-after(Store, '|')"/>

<xsl:template match="/results">
    <xsl:copy>
        <xsl:choose>
            <xsl:when test="$key-direction='before'">
                <xsl:apply-templates select="result[generate-id()=generate-id(key('key-before', substring-before(Store,'|'))[1])]"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:apply-templates select="result[generate-id() = generate-id(key('key-after', substring-after(Store,'|'))[1])]"/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:copy>
</xsl:template>

<!-- more templates -->

</xsl:stylesheet>

另请注意：

substring-before('abc', '|')

返回一个空字符串。这意味着：

<Store>0181</Store>

和

<Store>0181|1</Store>

不会被组合在一起，除非您替换：

substring-before(Store, '|')

使用：

substring-before(concat(Store, '|'), '|')

我希望在条件库上使用子串键

1 个答案: