JRAntCompileTask not works from Jasper 3.1.x

[prkothan]

 Hi,

We are currently using ant task (net.sf.jasperreports.ant.JRAntCompileTask) to compile out 150 more reports. And we are migrating from 2.0.5.  Ant task works properly with 2.0.5 and 3.1.0. But its doesn't works with Jasper reports 3.5.0.

And it doesn't works for the version 3.1.1 or greater.  But we able to compile the reports programmatically using java file or via ireports. And its run properly while generating reports. Just ant task compilation is not working.

We are getting following exception.

 jasper-report:

      [jrc] 20:05:59,639 DEBUG sax:1249 - setDocumentLocator(com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser$LocatorProxy@1117a20)

      [jrc] 20:05:59,639 DEBUG sax:1283 - startDocument()

      [jrc] 20:06:00,030 DEBUG sax:1318 - startElement(,jasperReport,jasperReport)

      [jrc] 20:06:00,046 DEBUG Digester:1325 -   Pushing body text ''

      [jrc] 20:06:00,046 DEBUG Digester:1344 -   New match='jasperReport'

      [jrc] 20:06:00,046 DEBUG Digester:1359 -   Fire begin() for FactoryCreateRule[className=net.sf.jasperreports.engine.xml.JasperDesignFactory, attributeName=null]

      [jrc] 20:06:00,046 DEBUG Digester:486 - [FactoryCreateRule]{jasperReport} New factory net.sf.jasperreports.engine.xml.JasperDesignFactory

      [jrc] 20:06:00,046 ERROR Digester:1363 - Begin event threw exception

      [jrc] java.lang.ClassNotFoundException: net.sf.jasperreports.engine.xml.JasperDesignFactory

    

Post Edited by Prasanna Kothandaraman at 04/16/09 12:29

[prkothan]

 Identified the cause, but issue is not resolved.

Cause is, from Jasper 3.1.1, 

JRXMLDesignFactory.java has enabled usage of contextClassLoader in the method configureDigester.

digester.setUseContextClassLoader(true);

 

As described in below links,  Ant doesn't set the context classloader before invoking a task. 

http://webui.sourcelabs.com/ant/issues/36717

https://issues.apache.org/bugzilla/show_bug.cgi?id=36717

https://issues.apache.org/bugzilla/show_bug.cgi?id=15018

And this should be taken care by customTask (JRAntCompileTask).  Actually execute() method set the contextClassLoader, still its not sufficient.

Please reply.

 

Regards,

Prasanna

[prkothan]

  Adding this line in compile () method of JRAntCompileTask.java class solved the issue.

Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());

 

Regards,

Prasanna

 

 

 

 

 

 

[lucianc]

Log this as a bug.

We might need to change the digester code to use a fallback classloader that can resolve classes from both the thread classloader and from getClass().getClassloader().

Regards,

Lucian