Examples of com.sun.jdi.ClassType

com.sun.jdi.ClassType
A mirror of a class in the target VM. A ClassType is a refinement of {@link ReferenceType} that applies to true classes in the JLSsense of the definition (not an interface, not an array type). Any {@link ObjectReference} that mirrors an instance of such a classwill have a ClassType as its type. @see ObjectReference @author Robert Field @author Gordon Hirsch @author James McIlree @since 1.3

         * @param target the target in which the thread died
         * @return <code>true</code> - the thread should be resumed
         */
        public boolean handleEvent(Event event,
                                   JDIDebugTarget target) {
            ClassType classType = ( ClassType ) ((ClassPrepareEvent) event).referenceType();
            String name = classType.name();


            // change this to create a breakpoint, as the method enter was too slow
            BreakpointRequest req = null;
            List<Method> list = classType.methodsByName( "onBreak" );
            if (  list.size() == 0 ) {
                throw new IllegalStateException( "MVELDebugHandler.onBreak cannot be found by JDI" );
            }
            
            Method method = list.get( 0 );

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            Object o = getRemoteVar( "label" );
            if ( o == null ) {
                return -1;
            }
            ObjectReference obj = (ObjectReference) o;
            ClassType frameType = (ClassType) obj.type();
            Field field = frameType.fieldByName( "lineNumber" );
            o = obj.getValue( field );
            if ( o == null ) {
                return -1;
            }
            IntegerValue val = (IntegerValue) o;

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                Object rem = getRemoteVar( "label" );
                if ( rem == null ) {
                    return null;
                }
                ObjectReference obj = (ObjectReference) rem;
                ClassType frameType = (ClassType) obj.type();
                Field field = frameType.fieldByName( "sourceFile" );
                rem = obj.getValue( field );
                if ( rem == null ) {
                    return null;
                }
                StringReference res = (StringReference) rem;

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        Method method = getUnderlyingMethod(); // onBreak
        //ReferenceType declaringType = method.declaringType(); // org.drools.core.base.mvel.MVELDebugHandler


        LocalVariable var = (LocalVariable) method.variables().get( 0 );//frame


        ClassType frameType = (ClassType) var.type();


        StackFrame frame = getUnderlyingStackFrame();
        Value value = frame.getValue( var );
        //getThread().getTopStackFrame().get


        //IValue value = jdivar.getValue();
        ObjectReferenceImpl o = (ObjectReferenceImpl) value;


        //if ( value instanceof JDINullValue ) {
        // return null;
        // }


        //ObjectReference o = (ObjectReference) ((JDIObjectValue) value).getUnderlyingObject();
        if ( o == null ) {
            return null;
        }


        Field field = frameType.fieldByName( methodName );
        Value val = o.getValue( field );
        return val;
    }

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        IntegerValue lineVal = getVM().mirrorOf( line );
        //ObjectReference realVal = val.getUnderlyingObject();
        args.add( lineVal );


        try {
            ClassType tt = (ClassType) debugHandlerClass;
            tt.invokeMethod( getUnderlyingThread(),
                             m,
                             args,
                             ObjectReference.INVOKE_SINGLE_THREADED );


        } catch ( Exception e ) {

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        ObjectReference realVal = val.getUnderlyingObject();
        args.add( nameVal );
        args.add( lineVal );


        try {
            ClassType tt = (ClassType) debugHandlerClass;
            IThread[] tharr = getThreads();
            ThreadReference t = null;
            DroolsThread t2 = null;


            for ( int i = 0; i < tharr.length; i++ ) {
                IThread th2 = tharr[i];
                ThreadReference th2real = ((DroolsThread) tharr[i]).getUnderlyingThread();


                if ( th2real.suspendCount() == 1 && th2.getName().equals( "main" ) ) {
                    t = th2real;
                    t2 = (DroolsThread) th2;
                }
            }


            tt.invokeMethod( t,
                             m,
                             args,
                             ObjectReference.INVOKE_SINGLE_THREADED );
            //t2.computeNewStackFrames();

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        ObjectReference realVal = val.getUnderlyingObject();
        args.add( nameVal );
        args.add( lineVal );


        try {
            ClassType tt = (ClassType) debugHandlerClass;
            IThread[] tharr = getThreads();
            ThreadReference t = null;
            DroolsThread t2 = null;


            for ( int i = 0; i < tharr.length; i++ ) {
                IThread th2 = tharr[i];
                ThreadReference th2real = ((DroolsThread) tharr[i]).getUnderlyingThread();


                if ( th2real.suspendCount() == 1 && th2.getName().equals( "main" ) ) {
                    t = th2real;
                    t2 = (DroolsThread) th2;
                }
            }


            tt.invokeMethod( t,
                             m,
                             args,
                             ObjectReference.INVOKE_SINGLE_THREADED );


        } catch ( Exception e ) {

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            Object o = getRemoteVar( "label" );
            if ( o == null ) {
                return -1;
            }
            ObjectReference obj = (ObjectReference) o;
            ClassType frameType = (ClassType) obj.type();
            Field field = frameType.fieldByName( "lineNumber" );
            o = obj.getValue( field );
            if ( o == null ) {
                return -1;
            }
            IntegerValue val = (IntegerValue) o;

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                Object rem = getRemoteVar( "label" );
                if ( rem == null ) {
                    return null;
                }
                ObjectReference obj = (ObjectReference) rem;
                ClassType frameType = (ClassType) obj.type();
                Field field = frameType.fieldByName( "sourceFile" );
                rem = obj.getValue( field );
                if ( rem == null ) {
                    return null;
                }
                StringReference res = (StringReference) rem;

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        Method method = getUnderlyingMethod(); // onBreak
        //ReferenceType declaringType = method.declaringType(); // org.drools.base.mvel.MVELDebugHandler


        LocalVariable var = (LocalVariable) method.variables().get( 0 );//frame


        ClassType frameType = (ClassType) var.type();


        StackFrame frame = getUnderlyingStackFrame();
        Value value = frame.getValue( var );
        //getThread().getTopStackFrame().get


        //IValue value = jdivar.getValue();
        ObjectReferenceImpl o = (ObjectReferenceImpl) value;


        //if ( value instanceof JDINullValue ) {
        // return null;
        // }


        //ObjectReference o = (ObjectReference) ((JDIObjectValue) value).getUnderlyingObject();
        if ( o == null ) {
            return null;
        }


        Field field = frameType.fieldByName( methodName );
        Value val = o.getValue( field );
        return val;
    }

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