Question

How can a FieldDeclaration (type: ASTNode) be converted to an IField (type: JavaElement). Is it possible to get the binding from the FieldDeclaration ASTNode, just like node.resolveBinding() as for MethodDeclaration node.

Need : I am visiting a FieldDeclaration node in a Class having public constants, and want to search references for that field in the project. I am using JDT’s SearchEngine for same. For this I want to create a search pattern as follows :

SearchPattern.createPattern(iField, IJavaSearchConstants.REFERENCES);

I have asked this as a comment to one of my questions, but didn’t get the answer for same. Posting it as separate question.

Thanks in advance for the answer.

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In reply to Deepak’s answer.

Using your approach i can retrieve the JavaElement as follows

List<VariableDeclarationFragment> fragments = node.fragments();
VariableDeclarationFragment fragment = fragments.get(0);
IJavaElement fieldElement = fragment.resolveBinding().getJavaElement();

If i am passing this IJavaElement to create the search pattern instead of the IField will it return the same result as those for an IField.

Answer 1

As usual ASTView plugin is your friend! 🙂 In the ASTView you can see that binding is available for VariableDeclarationFragment but not for a FieldDeclaration.

Getting the binding from FieldDeclaration

• Get the ‘fragments’ of the FieldDeclaration => you now have a bunch of VariableDeclarationFragment nodes
• Call VariableDeclarationFragment#resolveBinding() (this method is inherited from VariableDeclaration)