Examples of org.jgroups.blocks.MethodCall

org.jgroups.blocks.MethodCall
A method call is the JGroups representation of a remote method. It includes the name of the method (case sensitive) and a list of arguments. A method call is serializable and can be passed over the wire. @author Bela Ban @version $Revision: 1.27 $

    }


    public void testInheritanceMETHOD() throws Throwable {


        Method method = Target.class.getMethod("someMethod", new Class[] { String.class });
        MethodCall methodCall = new MethodCall(method, new Object[] {"abc"});


        TargetSubclass target = new TargetSubclass();
        Object result = methodCall.invoke(target);
        assertEquals("ABC", result);
    }

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    // TYPES
    //


    public void testTYPES() throws Throwable {


        MethodCall methodCall = new MethodCall("someMethod",
                                               new Object[] { "abc" },
                                               new Class[] { String.class });


        Target target = new Target();
        Object result = methodCall.invoke(target);
        assertEquals("ABC", result);
    }

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        assertEquals("ABC", result);
    }


    public void testInheritanceTYPES() throws Throwable {


        MethodCall methodCall = new MethodCall("someMethod",
                                               new Object[] { "abc" },
                                               new Class[] { String.class });


        TargetSubclass target = new TargetSubclass();
        Object result = methodCall.invoke(target);
        assertEquals("ABC", result);
    }

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    /**
     * This tests whether overriden methods are correctly identified and invoked.
     */
    public void testOverriddenForTYPES() throws Throwable  {


        MethodCall methodCall = new MethodCall("overriddenMethod",
                                               new Object[] { "abc" },
                                               new Class[] { String.class });


        TargetSubclass target = new TargetSubclass();
        Object result = methodCall.invoke(target);
        assertEquals("TargetSubclassABC", result);


    }

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    }


    public void testNoArgumentMethodForTYPES() throws Throwable  {


        MethodCall methodCall = new MethodCall("noArgumentMethod", new Object[0], new Class[0]);


        TargetSubclass target = new TargetSubclass();
        Object result = methodCall.invoke(target);
        assertEquals("noArgumentMethodResult", result);


    }

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    // SIGNATURE
    //


    public void testSIGNATURE() throws Throwable {


        MethodCall methodCall = new MethodCall("someMethod",
                                               new Object[] { "abc" },
                                               new String[] { "java.lang.String" });


        Target target = new Target();
        Object result = methodCall.invoke(target);
        assertEquals("ABC", result);
    }

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        assertEquals("ABC", result);
    }


    public void testInheritanceSIGNATURE() throws Throwable {


        MethodCall methodCall = new MethodCall("someMethod",
                                               new Object[] { "abc" },
                                               new String[] { "java.lang.String" });


        TargetSubclass target = new TargetSubclass();
        Object result = methodCall.invoke(target);
        assertEquals("ABC", result);
    }

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        assertEquals("ABC", result);
    }




    public void testMarshalling() throws Exception {
        MethodCall methodCall = new MethodCall("someMethod",
                                               new Object[] { "abc" },
                                               new String[] { "java.lang.String" });
        methodCall.put("name", "Bela");
        methodCall.put("id", new Integer(322649));


        System.out.println("methodCall: " + methodCall);


        MethodCall m=marshalAndUnmarshal(methodCall);
        System.out.println("m: " + m);
        assertEquals(m.get("name"), "Bela");
        assertEquals(m.get("id"), new Integer(322649));
    }

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    }




    private MethodCall marshalAndUnmarshal(MethodCall m) throws Exception {
        byte[] buf=Util.objectToByteBuffer(m);
        MethodCall retval=(MethodCall)Util.objectFromByteBuffer(buf);
        return retval;
    }

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        View new_view;
        Address other_coord=other_coords != null? (Address)other_coords.elementAt(0) : null;


        if(log.isInfoEnabled()) log.info("other_coord = " + other_coord);
        try {
            MethodCall call=new MethodCall("handleMerge", new Object[]{gms.view_id, gms.mbrs.getMembers()},
                    new String[]{ViewId.class.getName(), Vector.class.getName()});
            new_view=(View)gms.callRemoteMethod(other_coord, call, GroupRequest.GET_ALL, 0);
        }
        catch(Exception ex) {
             if(log.isErrorEnabled()) log.error("timed out or was suspected");
            return;
        }
        if(new_view == null) {
             if(warn) log.warn("received a Merge Denied");
            gms.passDown(new Event(Event.MERGE_DENIED));
            return; //Merge denied
        }


        //Flushing my old view
        gms.flush(gms.mbrs.getMembers(), null);
        MethodCall call=new MethodCall("handleViewChange", new Object[]{new_view.getVid(), new_view.getMembers()},
                new String[]{ViewId.class.getName(), Vector.class.getName()});
        gms.callRemoteMethods(gms.mbrs.getMembers(), call, GroupRequest.GET_ALL, 0);
        gms.becomeParticipant();
         if(log.isInfoEnabled()) log.info("merge done");
    }

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