GingerHead GingerHead - 10 months ago 52
Java Question

Is there any eclipse refactoring API that I can call programmatically?

I need to refactor code in a wide term. I know that from inside the Eclipse IDE I can refactor my classes. But is there any API that I can use in a java project so that I can refactor projects dynamically through code?

I need some idea on how to achieve the following: a program that calls all the eclipse refactorings for renaming and moving in a loop to refactoring the entire project in one shot!

I don't want to introduce new refactoring types by extending the refactoring classes. I just want to call them programmatically.

Thanks again to Paul Webster, Leif Frenzer, Mohsen Vakilian, and Arno for their great articles and help!

Answer Source

The answer below is great, but I answered with a wider perspective for the people who need a more bulky and tasty crunch of this wonderful cake:

    RefactoringStatus status = new RefactoringStatus();
    IWorkspace workspace = ResourcesPlugin.getWorkspace();
    IWorkspaceRoot root = workspace.getRoot();
    IProject[] projects = root.getProjects();


for (ICompilationUnit unit : mypackage.getCompilationUnits()) {
    IType primary = unit.findPrimaryType();
    IMethod[] methods = primary.getMethods();
    int i = 1;
    for (IMethod method : methods) {
        if (method.isConstructor()) {
    makeChangetoMethods(status, method,"changedMethodVersion_" + i);

After that:

IProgressMonitor monitor = new NullProgressMonitor();
status = new RefactoringStatus();
Refactoring refactoring = performMethodsRefactoring(status, methodToRename, newName);


Change change = refactoring.createChange(monitor);

find below the code for setting the descriptor:

String id = IJavaRefactorings.RENAME_METHOD;
RefactoringContribution contrib = RefactoringCore.getRefactoringContribution(id);
RenameJavaElementDescriptor desc = contrib.createDescriptor();