| /******************************************************************************* |
| * Copyright (c) 2010, 2011 Oracle. 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: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.jpa.core.internal.refactoring; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IFolder; |
| import org.eclipse.core.resources.mapping.IResourceChangeDescriptionFactory; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.OperationCanceledException; |
| import org.eclipse.core.runtime.SubMonitor; |
| import org.eclipse.jpt.common.utility.internal.CollectionTools; |
| import org.eclipse.jpt.common.utility.internal.iterables.EmptyIterable; |
| import org.eclipse.jpt.jpa.core.JpaProject; |
| import org.eclipse.jpt.jpa.core.JpaProjectManager; |
| import org.eclipse.jpt.jpa.core.JptJpaCorePlugin; |
| import org.eclipse.jpt.jpa.core.context.persistence.Persistence; |
| import org.eclipse.jpt.jpa.core.context.persistence.PersistenceUnit; |
| import org.eclipse.jpt.jpa.core.context.persistence.PersistenceXml; |
| import org.eclipse.ltk.core.refactoring.Change; |
| import org.eclipse.ltk.core.refactoring.CompositeChange; |
| import org.eclipse.ltk.core.refactoring.RefactoringStatus; |
| import org.eclipse.ltk.core.refactoring.TextChange; |
| import org.eclipse.ltk.core.refactoring.TextFileChange; |
| import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext; |
| import org.eclipse.ltk.core.refactoring.participants.RenameParticipant; |
| import org.eclipse.ltk.core.refactoring.participants.ResourceChangeChecker; |
| import org.eclipse.text.edits.MalformedTreeException; |
| import org.eclipse.text.edits.MultiTextEdit; |
| import org.eclipse.text.edits.ReplaceEdit; |
| import org.eclipse.text.edits.TextEdit; |
| |
| /** |
| * Participant in the rename refactoring of {@link IFolders}s. |
| * If the renamed mapping file is listed in a persistence.xml file of any JpaProject |
| * then a Change object is created that will rename that reference from the file. |
| * If the renamed mapping file is an implied mapping file, then an actual reference to the mapping file will be specified. |
| */ |
| public class JpaRenameFolderParticipant |
| extends RenameParticipant |
| { |
| |
| /** |
| * Store the {@link IFolder}s to be renamed |
| */ |
| |
| protected IFolder originalFolder; |
| |
| /** |
| * Store the persistence.xml ReplaceEdit in the checkConditions() call |
| * to avoid duplicated effort in createChange(). |
| */ |
| protected final Map<IFile, Iterable<ReplaceEdit>> persistenceXmlReplaceEdits; |
| |
| public JpaRenameFolderParticipant() { |
| super(); |
| this.persistenceXmlReplaceEdits = new HashMap<IFile, Iterable<ReplaceEdit>>(); |
| } |
| |
| @Override |
| public String getName() { |
| return JpaCoreRefactoringMessages.JPA_RENAME_FOLDER_REFACTORING_PARTICIPANT_NAME; |
| } |
| |
| @Override |
| protected boolean initialize(Object element) { |
| if (!getArguments().getUpdateReferences()) { |
| return false; |
| } |
| this.originalFolder = (IFolder) element; |
| return true; |
| } |
| |
| |
| //**************** RefactoringParticipant implementation ***************** |
| |
| /** |
| * Inform the refactoring processor of any files that are going to change. In the process of determining |
| * this go ahead and build up the appropriate ReplaceEdits to be used in the createChange() |
| */ |
| @Override |
| public RefactoringStatus checkConditions(IProgressMonitor monitor, CheckConditionsContext context) throws OperationCanceledException { |
| //since the progress bar will hang if a large JPA project is being loaded, |
| //we can at least set the subtask and report no progress. Only happens first time getJpaProjectManager() is called. |
| monitor.subTask(JpaCoreRefactoringMessages.JPA_REFACORING_PARTICIPANT_LOADING_JPA_PROJECTS_SUB_TASK_NAME); |
| JpaProjectManager jpaProjectManager = JptJpaCorePlugin.getJpaProjectManager(); |
| if (jpaProjectManager.getJpaProjectsSize() == 0) { |
| return null; |
| } |
| SubMonitor sm = SubMonitor.convert(monitor, jpaProjectManager.getJpaProjectsSize()*10 + 1); |
| sm.subTask(JpaCoreRefactoringMessages.JPA_RENAME_FOLDER_REFACTORING_SUB_TASK_NAME); |
| ResourceChangeChecker checker = (ResourceChangeChecker) context.getChecker(ResourceChangeChecker.class); |
| IResourceChangeDescriptionFactory deltaFactory = checker.getDeltaFactory(); |
| |
| for (JpaProject jpaProject : JptJpaCorePlugin.getJpaProjectManager().getJpaProjects()) { |
| this.createReplaceEdits(jpaProject); |
| sm.worked(10); |
| } |
| if (sm.isCanceled()) { |
| throw new OperationCanceledException(); |
| } |
| for (IFile persistenceXmlFile : this.persistenceXmlReplaceEdits.keySet()) { |
| deltaFactory.change(persistenceXmlFile); |
| } |
| sm.worked(1); |
| |
| return null; |
| } |
| |
| protected void createReplaceEdits(JpaProject jpaProject) throws OperationCanceledException { |
| PersistenceUnit persistenceUnit = getPersistenceUnit(jpaProject); |
| if (persistenceUnit == null) { |
| return; |
| } |
| Iterable<ReplaceEdit> replaceEdits = this.createPersistenceUnitReplaceEdits(persistenceUnit); |
| if (!CollectionTools.isEmpty(replaceEdits)) { |
| this.persistenceXmlReplaceEdits.put(jpaProject.getPersistenceXmlResource().getFile(), replaceEdits); |
| } |
| } |
| |
| @Override |
| public Change createChange(IProgressMonitor monitor) throws CoreException, OperationCanceledException { |
| if (this.persistenceXmlReplaceEdits.isEmpty()) { |
| return null; |
| } |
| SubMonitor sm = SubMonitor.convert(monitor, this.persistenceXmlReplaceEdits.size()); |
| sm.subTask(JpaCoreRefactoringMessages.JPA_RENAME_FOLDER_REFACTORING_SUB_TASK_NAME); |
| CompositeChange compositeChange = new CompositeChange(JpaCoreRefactoringMessages.JPA_RENAME_FOLDER_REFACTORING_CHANGE_NAME); |
| for (IFile persistenceXmlFile : this.persistenceXmlReplaceEdits.keySet()) { |
| if (sm.isCanceled()) { |
| throw new OperationCanceledException(); |
| } |
| this.addPersistenceXmlRenameChange(persistenceXmlFile, compositeChange); |
| } |
| //must check for children in case all changes were made in other participants TextChanges, |
| //want to return null so our node does not appear in the preview tree |
| return compositeChange.getChildren().length == 0 ? null : compositeChange; |
| } |
| |
| private Iterable<ReplaceEdit> createPersistenceUnitReplaceEdits(final PersistenceUnit persistenceUnit) { |
| if (persistenceUnit.getJpaProject().getJavaProject().isOnClasspath(this.originalFolder) || persistenceUnit.getJpaProject().getProject() == this.originalFolder.getProject()) { |
| return persistenceUnit.createRenameFolderEdits(this.originalFolder, getArguments().getNewName()); |
| } |
| return EmptyIterable.instance(); |
| } |
| |
| protected void addPersistenceXmlRenameChange(IFile persistenceXmlFile, CompositeChange compositeChange) { |
| TextChange textChange = getTextChange(persistenceXmlFile); |
| if (textChange == null) { |
| textChange = new TextFileChange(JpaCoreRefactoringMessages.JPA_RENAME_FOLDER_REFACTORING_CHANGE_PERSISTENCE_XML_NAME, persistenceXmlFile); |
| MultiTextEdit multiTextEdit = new MultiTextEdit(); |
| textChange.setEdit(multiTextEdit); |
| compositeChange.add(textChange); |
| } |
| Iterable<ReplaceEdit> mappingFileReplaceEdits = this.persistenceXmlReplaceEdits.get(persistenceXmlFile); |
| this.addEdits(textChange, mappingFileReplaceEdits); |
| } |
| |
| private PersistenceUnit getPersistenceUnit(JpaProject jpaProject) { |
| PersistenceXml persistenceXml = jpaProject.getRootContextNode().getPersistenceXml(); |
| if (persistenceXml == null) { |
| return null; |
| } |
| Persistence persistence = persistenceXml.getPersistence(); |
| if (persistence == null) { |
| return null; |
| } |
| if (persistence.getPersistenceUnitsSize() != 1) { |
| return null; // the context model currently only supports 1 persistence unit |
| } |
| return persistence.getPersistenceUnits().iterator().next(); |
| } |
| |
| private void addEdits(TextChange textChange, Iterable<? extends TextEdit> textEdits) { |
| for (TextEdit textEdit : textEdits) { |
| try { |
| textChange.addEdit(textEdit); |
| } |
| catch (MalformedTreeException e) { |
| //log exception and don't add this persistence.xml type deletion to the conflicting change object |
| JptJpaCorePlugin.log(e); |
| } |
| } |
| } |
| } |