8:55 a.m.
Sunay Shah [http://community.jboss.org/people/sunay] created the discussion
"couldn't get value for file 'classes/java/lang/bsh.class"
To view the discussion, visit: http://community.jboss.org/message/574944#574944
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Hello All ,
I get the following exception when i am trying to run bean shell script from my code
org.jbpm.JbpmException: couldn't get value for file
'classes/java/lang/bsh.class'
at org.jbpm.file.def.FileDefinition.getBytes(FileDefinition.java:196)
at org.jbpm.instantiation.ProcessClassLoader.findClass(ProcessClassLoader.java:116)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at bsh.classpath.ClassManagerImpl.plainClassForName(Unknown Source)
at bsh.classpath.ClassManagerImpl.classForName(Unknown Source)
at bsh.NameSpace.classForName(Unknown Source)
at bsh.NameSpace.getImportedClassImpl(Unknown Source)
at bsh.NameSpace.getClassImpl(Unknown Source)
at bsh.NameSpace.getClass(Unknown Source)
at bsh.Name.consumeNextObjectField(Unknown Source)
at bsh.Name.toObject(Unknown Source)
I am using jbpm3.2.6 , jboss 5,
i droped bsh-2.0b2.jar in my lib folder of my application, any idea or suggestion?
Is it a bug in jbpm3.2.6, because i found that on bug list... but its resolved? what is
the resolutionn of that bug. My decision handler code is calling the beanshell script ,
but it is saying that unable to load language :beanshell , i verified that all the jars
are implace,
Any Idea or suggestion ?
Thanks
Sunay
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11:47 p.m.
New subject: [jBPM] - Re: couldn't get value for file 'classes/java/lang/bsh.class
Sunay Shah [http://community.jboss.org/people/sunay] created the discussion
"Re: couldn't get value for file 'classes/java/lang/bsh.class"
To view the discussion, visit: http://community.jboss.org/message/575079#575079
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Hello All,
I think the problem is at the jbpm3.2.6 only because i have made one test class with the
same jar files and its able to load Beanshell , which is not possible in my decision
Handler
see my test class has following code
BSFManager bsfManager = new BSFManager();
BSFEngine bsfEngine = bsfManager.loadScriptingEngine("beanshell");
System.out.println("==> Engine loaded successfully");
System.out.println("=====>" + bsfEngine.getClass().getName());
this is able to load the bsfengine and prints
==> Engine loaded successfully
=====>bsh.util.BeanShellBSFEngine
while in decision handler
BSFEngine bsfEngine = this.manager.loadScriptingEngine("beanshell");
this code is throwing exception with message
Unable to load Language : beanshell
and log this exception
org.jbpm.JbpmException: couldn't get value for file
'classes/java/lang/bsh.class'
I am using following jars..
bsh.jar
bsf.jar
bsh-2.0b2.jar
Any one have idea about this painstacking issue ?? :(
Thanks
Sunay
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12:58 a.m.
New subject: [jBPM] - Re: couldn't get value for file 'classes/java/lang/bsh.class
Sunay Shah [http://community.jboss.org/people/sunay] created the discussion
"Re: couldn't get value for file 'classes/java/lang/bsh.class"
To view the discussion, visit: http://community.jboss.org/message/575083#575083
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I resolved the issue by my self, for those who are facing the same problem , i am writing
solution for them,
Actually In a decision handler when you try to initialize the beanshell engine , you have
ProcessContextClassLoader but actually you suppose to have webContextClassloader so it is
not able to load the BeanShellEngine because it is not able to find the relavent classes
that are available in a jar for beanshell. You actually have WebContextClass Loader ,
following code in decision handler will work
ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader(); // This code
will give you ProcessClassLoader
Thread.currentThread().setContextClassLoader(Thread.currentThread().getContextClassLoader().getParent());
//Above line will set WebContextClassLoader in current thread's classloader now you
can write you Beanshell related stuff
and finally in finally block you can set your class loader to
Thread.currentThread().setContextClassLoader(oldClassloader); // that is your
processClass Loader
Thanks
Sunay
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Sunay Shah