Exit from recursive apply-templates

scubin · May 1st, 2010, 07:16 PM

hi,

Iam having trouble with a recursive xsl:apply-templates.I want to come out of the recusrive xsl:apply-templates(but not termiante the XSL prematurely since i need the o/p till that loop) when a certain variable value is other than what i expect resulted from a certain external call to service but not from incoming doc in transformation.Here is my XML

XML:
<frame>
<minute>
<abc>45</abc>
<bcd>67</bcd>
</minute>
<minute>
<abc>45</abc>
<bcd>67</bcd>
</minute>
....
</frame>

XSL iam using:

<xsl:tempalte match="/">
<xsl:variable name="temp">
<xsl:apply-tempaltes select="frame/minute"/>
</xsl:variable>
<Result>
<xsl:value-of select="$temp"/>
</Result>
</xsl:template>
<xsl:tempalte match=minute>
<xsl:variable name=resp>
<xsl:value-of select="{external call}"/>
</xsl:variable>
<xsl:choose>
<xsl:when test="$resp !='0'">
<xsl:message terminate="yes"/>
</xsl:when>
<xsl:otherwise>
<xsl:copy -of select="$resp"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>

The problem with my xsl is iam not able to capture the result till the loop has run before it failed since it terminating the xsl prematurely.Can you help me how to capture the result and also exit from template gracefully without processing remaining templates after it failed

thanks

samjudson · May 1st, 2010, 07:21 PM

That's not a recursive template though, is it - a recursive template would be one where the minute template would call itself again.

What happens when you just remove the <xsl:message> line - surely the template simply finished and the XSLT carries on?

scubin · May 1st, 2010, 07:33 PM

Thanks sam for quick reply ,agreed not a recusrive template but some kind of looping.If i remove xsl:message it will continue to execute the other minute elements which iam a not supposed to execute even if one time the service fails since all are external service calls and it save processing time

samjudson · May 1st, 2010, 07:39 PM

Well perhaps you should turn it into a recursive template then, something like this:

Code:

<xsl:tempalte match="/"> 
<xsl:variable name="temp">
<xsl:apply-templates select="frame/minute[1]"/>
</xsl:variable>
<Result>
<xsl:value-of select="$temp"/>
</Result>
</xsl:template>

<xsl:tempalte match="minute">
<xsl:variable name="resp">
<xsl:value-of select="{external call}"/>
</xsl:variable>
<xsl:choose>
<xsl:when test="$resp !='0'">
<!-- Do nothing -->
</xsl:when>
<xsl:otherwise>
<xsl:copy -of select="$resp"/>
<xsl:apply-templates select="following-sibling::minute[1]"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>

scubin · May 1st, 2010, 07:46 PM

This looks cool if i add additional if condition before tht following sibing template that might work for me I will try and let u know thanks very much sam