Xalan extension functions

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Xalan extension functions

Xalan extension functions

2007-05-02 - By Sushy Behal

Reply: << 11 12 13 14 15 16 17 18 19

This works . Try this it would work too in your code if everything else is
fine

<?xml version="1.0" encoding="UTF-8" ?>
<xsl:stylesheet
xmlns:xsl= <http://www.w3.org/1999/XSL/Transform>
http://www.w3.org/1999/XSL/Transform
xmlns= <http://www.w3.org/1999/xhtml> http://www.w3.org/1999/xhtml
xmlns:xalan= <http://xml.apache.org/xalan> http://xml.apache.org/xalan
xmlns:mytest="MyTest"
extension-element-prefixes="mytest"
version="1.0">

<xalan:component prefix="mytest" functions="nodeLinkRef ">

<xalan:script lang="javaclass" src="MyTest"/>

</xalan:component>



<xsl:value-of select="mytest:nodeLinkRef(.)"/>

//Modify JAVA CODE

import java.util.*;

//import all other relevant packages

public class MyTest

{

public Node nodeLinkRef(Node node)
{

try{
// do anything yu want here and beand this will handle exceptions

}
catch(Exception e)
{
e.printStackTrace();
}
return node;
}

}

Thanks

Sushy

_____

From: Wade, John F. (MSFC-NAS902099)[TBE] [mailto:John.F.Wade@(protected)]
Sent: Wednesday, May 02, 2007 6:50 AM
To: Wade, John F. (MSFC-NAS902099)[TBE]; Kevin Cormier
Cc: xalan-j-users@(protected)
Subject: RE: Xalan extension functions

It's not Monday anymore. Oh well.

Here's the test case java code. It does exactly nothing.
Import java.util.*;

public class MyTest

{

public MyTest()

{}

}

The namespace and component definitions are:
<?xml version="1.0" encoding="UTF-8" ?>
<xsl:stylesheet
xmlns:xsl=http://www.w3.org/1999/XSL/Transform
xmlns=http://www.w3.org/1999/xhtml
xmlns:doc=http://nwalsh.com/xsl/documentation/1.0
exclude-result-prefixes="doc"
xmlns:xalan=http://xml.apache.org/xalan
xmlns:mytest="MyTest"
extension-element-prefixes="mytest"
version="1.0">

<xalan:component prefix="mytest" functions="MyTest">
<xalan:script lang="javaclass" src="xalan://MyTest/"/>
</xalan:component>

Down in one of the templates I've added a line that says:
<xsl:value-of select="mytest:MyTest()"/>

And the error I get is:

(Location of error unknown)XSLT Error
(javax.xml.transform.TransformerException):
javax.xml.transform.TransformerException: Instance method call to method
MyTest requires an Object instance as first argument

..which isn't the error I remember getting last time I tried this, but one
thing at a time.

Suggestions?

*********************************
John F. Wade, PE
MSFC EO20 - TBE

_____

From: Wade, John F. (MSFC-NAS902099)[TBE] [mailto:John.F.Wade@(protected)]
Sent: Fri 4/27/2007 3:29 PM
To: Kevin Cormier
Cc: xalan-j-users@(protected)
Subject: RE: Xalan extension functions

Classpath has been my thought, too. I'm a real beginner at this, and the
environment I'm working with has two variants, so I'm not sure how to
determine what the classpath is in each case.
But, we'll start with the stylesheet and JAVA code on Monday and go from
there.

Thanks.

JFW

_____

From: Kevin Cormier [mailto:kcormier@(protected)]
Sent: Fri 4/27/2007 3:11 PM
To: Wade, John F. (MSFC-NAS902099)[TBE]
Cc: xalan-j-users@(protected)
Subject: Re: Xalan extension functions

Hi John,

All I can think of with the information you've given is to check that your
class is on the classpath.

Could you send your stylesheet and Java class, and also show how you
invoked the transformation and what the full error message was?

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML dir=ltr><HEAD><TITLE>Re: Xalan extension functions</TITLE>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.2900.3059" name=GENERATOR></HEAD>
<BODY>
<DIV dir=ltr align=left> This works . Try this
it
would work too in your code if everything else is fine
<DIV dir=ltr>
<?xml version="1.0" encoding="UTF-8" ?> <xsl:stylesheet xmlns:xsl=<A
href="http://www.w3.org/1999/XSL/Transform">http://www.w3.org/1999/XSL/Transform</A> xmlns=<A
href="http://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml</A> xmlns:xalan=<A
href="http://xml.apache.org/xalan">http://xml.apache.org/xalan</A> xmlns:mytest="MyTest" extension-element-prefixes="mytest" version="1.0">
<xalan:component prefix="mytest"
functions="nodeLinkRef
">
  
<xalan:script lang="javaclass" src="MyTest"/>
  
</xalan:component>

<xsl:value-of select="mytest:nodeLinkRef(.)"/></DIV>
 
//Modify JAVA
CODE
 
<DIV dir=ltr>
import
java.util.*;
//import all other relevant
packages
public class MyTest 
{
 
 public Node nodeLinkRef(Node node)   {              try{    
     // do anything yu want
here and beand this will handle exceptions  
   }    catch(Exception
e)    {     e.printStackTrace(); 
   }      return
node;   }

}</DIV></DIV>
<DIV>Thanks</DIV>
<DIV> </DIV>
<DIV>Sushy</DIV>
<DIV> </DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
From: Wade, John F. (MSFC-NAS902099)[TBE]
[mailto:John.F.Wade@(protected)] Sent: Wednesday, May 02, 2007 6:50
AM To: Wade, John F. (MSFC-NAS902099)[TBE]; Kevin
Cormier Cc: xalan-j-users@(protected) Subject: RE: Xalan
extension functions </DIV>
<DIV></DIV>
<DIV id=idOWAReplyText60140 dir=ltr>
<DIV dir=ltr>It's not Monday
anymore.  Oh well.</DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>Here's the test case java code.  It does exactly
nothing.</DIV>
<DIV dir=ltr>
Import java.util.*;
public class MyTest 
{
public MyTest() 
{}

}</DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>The namespace and component definitions
are:</DIV>
<DIV dir=ltr>
<?xml
version="1.0" encoding="UTF-8" ?> <xsl:stylesheet
 xmlns:xsl=<A
href="http://www.w3.org/1999/XSL/Transform">http://www.w3.org/1999/XSL
/Transform</A> xmlns=<A
href="http://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml</A>
 xmlns:doc=<A
href="http://nwalsh.com/xsl/documentation/1.0">http://nwalsh.com/xsl
/documentation/1.0</A> exclude-result-prefixes="doc" xmlns:xalan=<A
href="http://xml.apache.org/xalan">http://xml.apache.org/xalan</A> 
xmlns:mytest="MyTest" extension-element-prefixes="mytest" version="1.0">
<xalan:component prefix="mytest" functions="MyTest"> <xalan:script lang="javaclass" src="xalan://MyTest/"/> </xalan:component></DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>Down in one of the templates I've added a line that
says:</DIV>
<DIV dir=ltr>
<xsl:value-of select="mytest:MyTest()"/></DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>And the error I get is:</DIV>
<DIV dir=ltr> (Location of
error
unknown)XSLT Error (javax.xml.transform.TransformerException):
javax.xml.transform.TransformerException: Instance method call to method MyTest
requires an Object instance as first argument </DIV>
<DIV dir=ltr>...which isn't the error I remember getting last time
I tried this, but one thing at a time.</DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>Suggestions?</DIV>
<DIV dir=ltr> </DIV></DIV>
<DIV id=idSignature82333 dir=ltr>
<DIV>*********************************</DIV>
<DIV>John F. Wade, PE</DIV>
<DIV>MSFC EO20 - TBE</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV></DIV>
<DIV dir=ltr> 
<HR tabIndex=-1>
From: Wade, John F. (MSFC-NAS902099)[TBE]
[mailto:John.F.Wade@(protected)] Sent: Fri 4/27/2007 3:29
PM To: Kevin Cormier Cc:
xalan-j-users@(protected) Subject: RE: Xalan extension
functions </DIV>
<DIV dir=ltr>
<DIV id=idOWAReplyText42563 dir=ltr>
<DIV dir=ltr>Classpath has been my
thought, too.  I'm a real beginner at this, and the environment I'm
working
with has two variants, so I'm not sure how to determine what the classpath is
in
each case.  </DIV>
<DIV dir=ltr>But, we'll start with the
stylesheet and JAVA code on Monday and go from there.</DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>Thanks.</DIV>
<DIV dir=ltr> </DIV></DIV>
<DIV id=idSignature42534 dir=ltr>
<DIV>JFW</DIV>
<DIV> </DIV>
<DIV> </DIV></DIV>
<DIV dir=ltr> 
<HR tabIndex=-1>
From: Kevin Cormier
[mailto:kcormier@(protected)] Sent: Fri 4/27/2007 3:11 PM To:
Wade, John F. (MSFC-NAS902099)[TBE] Cc:
xalan-j-users@(protected) Subject: Re: Xalan extension
functions </DIV>
<DIV>
Hi John, All I can think of with the information you've
given is to check that your class is on the classpath. Could you send
your stylesheet and Java class, and also show how you invoked the
transformation and what the full error message
was? </DIV></DIV></BODY></HTML>