Case Study: adding data and statistics

[ifi-stolz-refaktor.git] / case-study / jdt-before / core refactoring / org / eclipse / jdt / internal / corext / refactoring / AbstractJavaElementRenameChange.java

diff --git a/case-study/jdt-before/core refactoring/org/eclipse/jdt/internal/corext/refactoring/AbstractJavaElementRenameChange.java b/case-study/jdt-before/core refactoring/org/eclipse/jdt/internal/corext/refactoring/AbstractJavaElementRenameChange.java
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+/*******************************************************************************
+ * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.internal.corext.refactoring;
+
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.SubProgressMonitor;
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.ResourcesPlugin;
+
+import org.eclipse.ltk.core.refactoring.Change;
+import org.eclipse.ltk.core.refactoring.resource.ResourceChange;
+
+import org.eclipse.jdt.core.JavaCore;
+
+public abstract class AbstractJavaElementRenameChange extends ResourceChange {
+
+       private final String fNewName;
+
+       private final String fOldName;
+
+       private final IPath fResourcePath;
+
+       private final long fStampToRestore;
+
+       protected AbstractJavaElementRenameChange(IPath resourcePath, String oldName, String newName) {
+               this(resourcePath, oldName, newName, IResource.NULL_STAMP);
+       }
+
+       protected AbstractJavaElementRenameChange(IPath resourcePath, String oldName, String newName, long stampToRestore) {
+               Assert.isNotNull(newName, "new name"); //$NON-NLS-1$
+               Assert.isNotNull(oldName, "old name"); //$NON-NLS-1$
+               fResourcePath= resourcePath;
+               fOldName= oldName;
+               fNewName= newName;
+               fStampToRestore= stampToRestore;
+       }
+
+       protected abstract IPath createNewPath();
+
+       protected abstract Change createUndoChange(long stampToRestore) throws CoreException;
+
+       protected abstract void doRename(IProgressMonitor pm) throws CoreException;
+
+       @Override
+       public Object getModifiedElement() {
+               return JavaCore.create(getResource());
+       }
+
+       @Override
+       protected IResource getModifiedResource() {
+               return getResource();
+       }
+
+       public String getNewName() {
+               return fNewName;
+       }
+
+       public String getOldName() {
+               return fOldName;
+       }
+
+       protected final IResource getResource() {
+               return ResourcesPlugin.getWorkspace().getRoot().findMember(fResourcePath);
+       }
+
+       protected IPath getResourcePath() {
+               return fResourcePath;
+       }
+
+       @Override
+       public final Change perform(IProgressMonitor pm) throws CoreException {
+               try {
+                       pm.beginTask(RefactoringCoreMessages.AbstractRenameChange_Renaming, 1);
+                       IResource resource= getResource();
+                       IPath newPath= createNewPath();
+                       Change result= createUndoChange(resource.getModificationStamp());
+                       doRename(new SubProgressMonitor(pm, 1));
+                       if (fStampToRestore != IResource.NULL_STAMP) {
+                               IResource newResource= ResourcesPlugin.getWorkspace().getRoot().findMember(newPath);
+                               newResource.revertModificationStamp(fStampToRestore);
+                       }
+                       return result;
+               } finally {
+                       pm.done();
+               }
+       }
+}
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