I am facing some problem vis-a-vis setting up Jython Engine to recognise jars in a dir. Actually other Engines namely Javascript, Beanshell seem to be working fine but Jython does not load classes from the Current CL but rather picks up classes from the System ClassLoader. Now to hack it away, I am setting classpath directly into the SYS. CL so that Jython works fine. Jython starts working fine, BUT Javascript seems to be having problems and gives me this error
java.lang.NoClassDefFoundError: org/mozilla/javascript/NativeScript
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
at java.lang.ClassLoader.defineClass(ClassLoader.java:431)
at org.mozilla.classfile.DefiningClassLoader.defineClass(Unknown Source)
at org.mozilla.javascript.optimizer.Codegen.compile(Unknown Source)
at org.mozilla.javascript.Context.compile(Unknown Source)
at org.mozilla.javascript.Context.compile(Unknown Source)
at org.mozilla.javascript.Context.compileReader(Unknown Source)
at org.mozilla.javascript.Context.evaluateReader(Unknown Source)
at org.mozilla.javascript.Context.evaluateString(Unknown Source)
at org.apache.bsf.engines.javascript.JavaScriptEngine.eval(Unknown Source)
at org.apache.bsf.BSFManager$5.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.bsf.BSFManager.eval(Unknown Source)
at java.awt.Component.processEvent(Component.java:4943)
at java.awt.Container.processEvent(Container.java:1566)
at java.awt.Component.dispatchEventImpl(Component.java:3639)
at java.awt.Container.dispatchEventImpl(Container.java:1623)
at java.awt.Component.dispatchEvent(Component.java:3480)
at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1688)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:593)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:765)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:698)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:559)
at java.awt.Component.dispatchEventImpl(Component.java:3509)
at java.awt.Container.dispatchEventImpl(Container.java:1623)
at java.awt.Window.dispatchEventImpl(Window.java:1590)
at java.awt.Component.dispatchEvent(Component.java:3480)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:450)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:197)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)
Because it is finding Duplicate Class? or not finding it at all since I am modifying java.class.path Dynamically based on the language selection is Jython or not. For other Languages, I set the java.class.path property to the Original ClassPath setting. Could anyone help me sort out this bug?.
My second question is, How can I get the Language Interpreter object such that for Jython I could directly add the external jars to its Interpreter instead of manipulating the System Classpath Dynamically. Can I write a script in Jython which accesses the PySystemState and adds the jars to the interpreter. Does anyone have any tips for this. I am sure Dynamic Language Switching would be a good feature and many Gurus out here must be having a solution to this problem.
Thirdly ain't Rhino BSF Engine maintained? I am running a very old version of Rhino (I think 1_5_R3 or something) and using the new version gives me some errors. If you want I could send you the errors I get.
Awaiting your replies, Jiger Patel.
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