xslt - Match conditionally upon current node value -

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given following xml:

<current>   <login_name>jd</login_name> </current> <people>   <person>     <first>john</first>     <last>doe</last>     <login_name>jd</login_name>   </preson>   <person>     <first>pierre</first>     <last>spring</last>     <login_name>ps</login_name>   </preson> </people>

how can "john doe" within current/login matcher?

i tried following:

<xsl:template match="current/login_name">   <xsl:value-of select="../people/first[login_name = .]"/>   <xsl:text> </xsl:text>   <xsl:value-of select="../people/last[login_name = .]"/> </xsl:template>

i'd define key index people:

<xsl:key name="people" match="person" use="login_name" />

using key here keeps code clean, might find helpful efficiency if you're having retrieve <person> elements based on <login_name> child.

i'd have template returned formatted name of given <person>:

<xsl:template match="person" mode="name">   <xsl:value-of select="concat(first, ' ', last)" /> </xsl:template>

and i'd do:

<xsl:template match="current/login_name">   <xsl:apply-templates select="key('people', .)" mode="name" /> </xsl:template>

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