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Search for constructor invocations with parameters [message #757707]

Mon, 21 November 2011 05:08

Eclipse User

Hello,

I've got the following problem:
I'm trying to search for constructor invocations for constructors with parameters. I have tried searching for constructors without parameters and it worked fine. However searching for constructor invocations, when constructors have parameters doesn't find any searchMatches.

I tried the following code with variations:

public final static int GENERICS_AGNOSTIC_MATCH_RULE = SearchPattern.R_EXACT_MATCH
			| SearchPattern.R_CASE_SENSITIVE 
			| SearchPattern.R_EQUIVALENT_MATCH;


SearchPattern pattern = SearchPattern.createPattern(element,
  IJavaSearchConstants.REFERENCES, /* I also tried CLASS_INSTANCE_CREATION_TYPE_REFERENCE and even ALL_OCCURRENCES */
  GENERICS_AGNOSTIC_MATCH_RULE); 


// the scope is a PackageFragmentRoot for src folder - 
// obtained with ... getPackageFragmentRoot(sourceFolder);
IJavaSearchScope searchScope = SearchEngine.createJavaSearchScope(scope);

SearchEngine searchEngine = new SearchEngine();

searchEngine.search(pattern, new SearchParticipant[] { SearchEngine
.getDefaultSearchParticipant() }, searchScope, requestor,
null /* progress monitor */);

This code works fine for searching method invocations and constructor invocations without parameters.

Please help.

Re: Search for constructor invocations with parameters [message #757716 is a reply to message #757707]

Mon, 21 November 2011 05:48

Eclipse User

This should work unless there is something else wrong. Did you make sure that the parameter type matches exactly?

Re: Search for constructor invocations with parameters [message #757724 is a reply to message #757716]

Mon, 21 November 2011 06:08

Eclipse User

Yes.

For example I try to look for constructor:

public JavaClassExample(JavaClassExample exampleParameter) {

}

Which is invoked in the code like this:

JavaClassExample newconstructor = JavaClassExample(new JavaClassExample());

JavaClassExample example = new JavaClassExample();
JavaClassExample newconstructor2 = JavaClassExample(element);

Re: Search for constructor invocations with parameters [message #757734 is a reply to message #757716]

Mon, 21 November 2011 07:16

Eclipse User

Maybe I misunderstood your clarification question.

I'm using method:

SearchPattern.createPattern(IJavaElement element, int limitTo, int matchRule)

and you were probably referring to the method:

SearchPattern.createPattern(String stringPattern, int searchFor, int limitTo, int matchRule)

where you have to specify parameterTypes in the stringPattern.

Do I have to have any additional information, when I'm doing search by IJavaElement?

Re: Search for constructor invocations with parameters [message #758141 is a reply to message #757734]

Tue, 22 November 2011 00:05

Eclipse User

The string pattern can be something like JavaClassExample(JavaClassExample). In the element case, I hope your element is JavaClassExample(JavaClassExample) and not JavaClassExample().

Re: Search for constructor invocations with parameters [message #758203 is a reply to message #758141]

Tue, 22 November 2011 05:28

Eclipse User

Unfortunately I get a strange behavior.
Whenever I use a

SearchPattern.createPattern(constructor, IJavaSearchConstants.REFERENCES,  GENERICS_AGNOSTIC_MATCH_RULE);

and pass in a IMethod reference to the constructor

public JavaClassExample(JavaClassExample exampleParameter) {}

I don't get matches at all.

When I use a

SearchPattern.createPattern(simpleMethodSignature, IJavaSearchConstants.CONSTRUCTOR, IJavaSearchConstants.REFERENCES, GENERICS_AGNOSTIC_MATCH_RULE);

with simpleMethodSignature = "JavaClassExample(JavaClassExample)" I don't get matches either.

However, if I pass a simpleMethodSignature = "JavaClassExample()" I get matches for both JavaClassExample() AND JavaClassExample(JavaClassExample).

Is anyone able to reproduce the issue, or am I using SearchPattern wrong?

Thanks in advance
Konstantin

Re: Search for constructor invocations with parameters [message #758515 is a reply to message #758141]

Wed, 23 November 2011 09:34

Eclipse User

Satyam, can you reproduce the problem?
If yes, I will file a bug on this behavior.

Thanks,
Konstantin

Re: Search for constructor invocations with parameters [message #758775 is a reply to message #758515]

Thu, 24 November 2011 09:13

Eclipse User

Resolved: the problem was due to compilation errors in the file, containing constructor being searched.
Thanks for your time.
Konstantin

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