xml 消除重复属性

Posted 2021-05-16

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
	version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:pa="urn:Applyonline-Product-Attributes"
    xmlns:ms="urn:schemas-microsoft-com:xslt"
    exclude-result-prefixes="pa ms"
    >
	<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>

	<xsl:template match="/">
      <xsl:apply-templates select="/LenderParam/Products/Product"/>
   </xsl:template>

	<xsl:template match="/LenderParam/Products/Product">
        <xsl:apply-templates select="Product"/>
    </xsl:template>

    <xsl:template match="Product">
		<xsl:variable name="parentProduct" select="@display"/>

		<!-- first get all values and sort them -->
		<xsl:variable name="f1">
			<xsl:for-each select="pa:RepaymentFrequency">
				<xsl:sort select="@value"/>
				<Freq>
					<xsl:attribute name="value">
						<xsl:value-of select="@value"/>
					</xsl:attribute>
				</Freq>
			</xsl:for-each>
		</xsl:variable>
		<xsl:variable name="f1ns" select="ms:node-set($f1)" />
		
		<!-- now filter out duplicates -->
		<xsl:variable name="f2">
			<xsl:for-each select="$f1ns/Freq">
				<xsl:choose>
					<!-- if the sibiling before matches then dont add it, this works because we sorted the list so all duplicates will follow one another -->
					<xsl:when test="position() != 1">
						<xsl:if test="@value != preceding-sibling::*[1]/@value">
							<xsl:value-of select="@value"/>
						</xsl:if>
					</xsl:when>
					<!-- the first node has no preceeding sibling so we always add it -->
					<xsl:otherwise>
						<xsl:value-of select="@value"/>
					</xsl:otherwise>
				</xsl:choose>
			</xsl:for-each>
		</xsl:variable>
		<xsl:variable name="f2ns" select="ms:node-set($f2)" />
		
		<xsl:value-of select="$f2ns"/>
		
		<xsl:apply-templates select="Class">
			<xsl:with-param name="parentProduct" select="$parentProduct"/>
	
		</xsl:apply-templates>
    </xsl:template>

	<xsl:template match="Class">
		<xsl:param name="parentProduct"/>

		<!-- Only Render this product if it has a malid -->
		<xsl:if test="@malid">
			<Product>
				<xsl:value-of select="$parentProduct"/>
				<xsl:text>, </xsl:text><xsl:value-of select="@display"/><xsl:text>-------</xsl:text><xsl:value-of select="@malid"/>
			</Product>
		</xsl:if>
    </xsl:template>


</xsl:stylesheet>