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Using Method Invocation Visitor [message #554922]

Tue, 24 August 2010 18:15

Niranjani S

Messages: 3
Registered: August 2010

Junior Member

Hi all,
I wrote this code to trace all the methods called by a member method in a class using the MethodInvocation visitor pattern. When I call resolvebinding, I'm able to differentiate overloaded methods by checking the parameter type and/or number of parameters. But I'm not able to trace overridden methods.

Say for example, there are two classes A and B where A is the superclass and B is the subclass. Then, I have:
A a;
A a=new B();
Suppose there is a method, say, setVal in A which is overridden in B.

Then the call a.setVal() will call B's setVal() but the Method Invocation Visitor pattern resolves it to A's setVal(). Can this be sorted out by some other way?? Or since java uses late binding this resloving can be done at run-time only???

Thanks in advance,

Niranjani S

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Re: Using Method Invocation Visitor [message #554987 is a reply to message #554922]

Wed, 25 August 2010 06:07

Satyam Kandula

Messages: 444
Registered: July 2009

Senior Member

Yes, it will not be possible to figure out the exact binding at compile time. However, you can find out the possible bindings by getting the subtypes of A and then checking if the methods are overriden in the subtype.
BTW, try to use - SearchEngine.searchDeclarationsOfSentMessages(). This is probably what you are writing.

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