Problem calling external java method 2005-10-20 - By Chris Bare
Thanks a ton. That way works!
It seems that the crucial difference is putting the
fully-qualified-classname (mypackage.MyClass) in the namespace rather
than in the select attributes. For example this works just fine:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:java_util_date="http://xml.apache.org/xalan/java/java.util.Date"
version="1.0">
<xsl:output method="xml"/>
<xsl:variable name="now" select="java_util_date:new()"/>
<xsl:template match="/">
<foobar>
<xsl:attribute name="square">
<xsl:value-of select="java_util_date:toString($now)"/>
</xsl:attribute>
</foobar>
</xsl:template>
</xsl:stylesheet>
...while this fails trying to find a static method:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:dammit="http://xml.apache.org/xalan/java"
version="1.0">
<xsl:output method="xml"/>
<xsl:variable name="now" select="dammit:java.util.Date.new()"/>
<xsl:template match="/">
<foobar>
<xsl:attribute name="square">
<xsl:value-of select="dammit:java.util.Date.toString($now)"/>
</xsl:attribute>
</foobar>
</xsl:template>
</xsl:stylesheet>
java.lang.NoSuchMethodException: For extension function, could not find
method static java.util.Date.toString([ExpressionContext,] #UNKNOWN
(java.util.Date)).
I wonder if this is the intended behavior. I was originially thinking
the only difference between calling a static method and an instance
method was whether you pass in the instance as a parameter.
I haven't tried all the permutations, but the
http://xml.apache.org/xalan/java/ namespace seems to be optional.
Anyway, huge thanks to John!!
-----Original Message-----
From: John Gentilin [mailto:gentijo@(protected)]
Sent: Wednesday, October 19, 2005 6:18 PM
To: Chris Bare
Cc: xalan-j-users@(protected)
Subject: Re: Problem calling external java method
Chris,
I declare my extensions, in interpretive mode, a bit differently. I
think the java namespace may have special meaning. The example below
declares a class called CategoryPageMgr that exists in the custom
package.
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
xmlns:catmgr="custom.CategoryPageMgr"
exclude-result-prefixes="catmgr"
extension-element-prefixes="catmgr">
<xsl:param name="CategoryMgr" select="catmgr:new()"/>
<xsl:template match="foo">
<data>
<xsl:value-of select="catmgr:getCategoryPage($CategoryMgr,
$category, $localID, $pageData)" />
</data>
</xsl:template>
</xsl:stylesheet>
Hope that helps
John G
Chris Bare wrote:
>Help!
>
>...
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