编辑:我有一个解决方案,但我确信有更好的方法。请参阅下文。
源XML:
<?xml version="1.0"?>
<reservations>
<reservation>
<id>1</id>
<guestId>1111</guestId>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<guestId>2222,3333,4444</guestId>
<!-- other fields -->
</reservation>
</reservations>
预期输出:
<?xml version="1.0" encoding="UTF-8"?>
<reservations>
<reservation>
<id>1</id>
<csvGuestString>1111</csvGuestString>
<guestId>1111</guestId>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<csvGuestString>2222,3333,4444</csvGuestString>
<guestId>2222</guestId>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<csvGuestString>2222,3333,4444</csvGuestString>
<guestId>3333</guestId>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<csvGuestString>2222,3333,4444</csvGuestString>
<guestId>4444</guestId>
<!-- other fields -->
</reservation>
</reservations>
规则:
<reservation>
个访客的n
元素(由<guestId>
中的逗号分隔值定义),复制<reservation>
元素及其后代 - n
次,每次使用下一个guestId值。<guestId>
元素的值,并且必须将其放在新的<csvGuestString>
元素中。我到目前为止(它有效,但不知道它是否是最有效的解决方案):
<?xml version="1.0"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:exsl="http://exslt.org/common"
exclude-result-prefixes="exsl"
version="1.0">
<xsl:output method="xml" omit-xml-declaration="no" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:variable name="vTokenName" select="'token'"/>
<xsl:variable name="vDoc" select="/"/>
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>
<xsl:template match="guestId">
<csvGuestString>
<xsl:apply-templates />
</csvGuestString>
</xsl:template>
<xsl:template match="reservation">
<xsl:variable name="vGuestRtfPass1">
<xsl:call-template name="tokenize">
<xsl:with-param name="text" select="guestId"/>
<xsl:with-param name="delimiter" select="','"/>
</xsl:call-template>
</xsl:variable>
<xsl:apply-templates select="exsl:node-set($vGuestRtfPass1)/*" mode="pass2">
<xsl:with-param name="pPosition" select="position()"/>
</xsl:apply-templates>
</xsl:template>
<xsl:template match="token" mode="pass2">
<xsl:param name="pPosition" />
<reservation>
<xsl:apply-templates select="$vDoc/*/reservation[$pPosition]/*" />
<guestId>
<xsl:apply-templates />
</guestId>
</reservation>
</xsl:template>
<xsl:template name="tokenize">
<xsl:param name="text"/>
<xsl:param name="delimiter" select="' '"/>
<xsl:choose>
<xsl:when test="contains($text,$delimiter)">
<xsl:element name="{$vTokenName}">
<xsl:value-of select="substring-before($text,$delimiter)"/>
</xsl:element>
<xsl:call-template name="tokenize">
<xsl:with-param name="text" select="substring-after($text,$delimiter)"/>
<xsl:with-param name="delimiter" select="$delimiter"/>
</xsl:call-template>
</xsl:when>
<xsl:when test="$text">
<xsl:element name="{$vTokenName}">
<xsl:value-of select="$text"/>
</xsl:element>
</xsl:when>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
一如既往,感谢您的协助。
答案 0 :(得分:2)
没有必要使用任何tokenize()
扩展函数,并且此转换可以在只具有xxx:node-set()
扩展函数的XSLT处理器上运行:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ext="http://exslt.org/common" exclude-result-prefixes="ext">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="@*|node()" name="identity">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="reservation/guestId">
<xsl:call-template name="identity"/>
<csvGuestString><xsl:value-of select="."/></csvGuestString>
</xsl:template>
<xsl:template match="reservation[contains(guestId, ',')]" name="explode">
<xsl:param name="pCurrent" select="."/>
<xsl:param name="pLastId" select="substring-before($pCurrent/guestId, ',')"/>
<xsl:variable name="vrtfResult">
<xsl:apply-templates select="$pCurrent" mode="explode"/>
</xsl:variable>
<xsl:copy-of select="$vrtfResult"/>
<xsl:variable name="vResult" select="ext:node-set($vrtfResult)/*"/>
<xsl:if test="contains(substring-after($vResult/csvGuestString, $vResult/guestId), ',')">
<xsl:call-template name="explode">
<xsl:with-param name="pCurrent" select="$vResult"/>
<xsl:with-param name="pLastId" select="$vResult/guestId"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
<xsl:template match="node()" mode="explode">
<xsl:call-template name="identity"/>
</xsl:template>
<xsl:template match="reservation" mode="explode">
<xsl:copy>
<xsl:apply-templates select="node()" mode="explode"/>
</xsl:copy>
</xsl:template>
<xsl:template match="guestId[contains(.,',')]" mode="explode">
<csvGuestString><xsl:value-of select="."/></csvGuestString>
<guestId><xsl:value-of select="substring-before(., ',')"/></guestId>
</xsl:template>
<xsl:template match="guestId" mode="explode">
<guestId>
<xsl:value-of select="substring-before(substring-after(concat(../csvGuestString, ','), concat(current(),',')), ',')"/>
</guestId>
</xsl:template>
</xsl:stylesheet>
在提供的XML文档上应用此转换时:
<reservations>
<reservation>
<id>1</id>
<guestId>1111</guestId>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<guestId>2222,3333,4444</guestId>
<!-- other fields -->
</reservation>
</reservations>
产生了想要的正确结果:
<reservations>
<reservation>
<id>1</id>
<guestId>1111</guestId>
<csvGuestString>1111</csvGuestString>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<csvGuestString>2222,3333,4444</csvGuestString>
<guestId>2222</guestId>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<csvGuestString>2222,3333,4444</csvGuestString>
<guestId>3333</guestId>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<csvGuestString>2222,3333,4444</csvGuestString>
<guestId>4444</guestId>
<!-- other fields -->
</reservation>
</reservations>
答案 1 :(得分:1)
使用EXSLT字符串函数的tokenize
方法:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:str="http://exslt.org/strings"
exclude-result-prefixes="str">
<xsl:strip-space elements="*"/>
<xsl:output indent="yes"/>
<xsl:template match="@* | node()">
<xsl:copy>
<xsl:apply-templates select="@* | node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="reservation">
<xsl:variable name="this" select="."/>
<xsl:for-each select="str:tokenize(guestId, ',')" >
<xsl:apply-templates select="$this" mode="copy">
<xsl:with-param name="id" select="."/>
</xsl:apply-templates>
</xsl:for-each>
</xsl:template>
<xsl:template match="reservation" mode="copy">
<xsl:param name="id"/>
<xsl:copy>
<xsl:apply-templates select="@*"/>
<xsl:apply-templates select="node()">
<xsl:with-param name="id" select="$id"/>
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
<xsl:template match="reservation/guestId">
<xsl:param name="id"/>
<csvGuestString>
<xsl:value-of select="."/>
</csvGuestString>
<guestId>
<xsl:value-of select="$id"/>
</guestId>
</xsl:template>
</xsl:stylesheet>
这样xsltproc会将您的输入样本转换为
<reservations>
<reservation>
<id>1</id>
<csvGuestString>1111</csvGuestString>
<guestId>1111</guestId>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<csvGuestString>2222,3333,4444</csvGuestString>
<guestId>2222</guestId>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<csvGuestString>2222,3333,4444</csvGuestString>
<guestId>3333</guestId>
<!-- other fields -->
</reservation>
<reservation>
<id>2</id>
<csvGuestString>2222,3333,4444</csvGuestString>
<guestId>4444</guestId>
<!-- other fields -->
</reservation>
</reservations>