plugins/org.eclipse.bpel.ui.noEmbeddedEditors/src/org/eclipse/bpel/ui/BPELResourceChangeListener.java - bpel/org.eclipse.bpel - Git at Google

 /*******************************************************************************
  * Copyright (c) 2005, 2012 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.bpel.ui;

 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;

 import org.eclipse.bpel.common.extension.model.ExtensionMap;
 import org.eclipse.bpel.common.extension.model.ExtensionmodelFactory;
 import org.eclipse.bpel.model.CorrelationSet;
 import org.eclipse.bpel.model.messageproperties.Property;
 import org.eclipse.bpel.ui.util.BPELUtil;
 import org.eclipse.bpel.validator.Builder;
 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.IResourceChangeEvent;
 import org.eclipse.core.resources.IResourceChangeListener;
 import org.eclipse.core.resources.IResourceDelta;
 import org.eclipse.core.resources.IResourceDeltaVisitor;
 import org.eclipse.core.resources.IWorkspaceRoot;
 import org.eclipse.core.resources.IWorkspaceRunnable;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.emf.common.util.EList;
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.InternalEObject;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.ecore.resource.ResourceSet;
 import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;


 /**
  * Listens to changes to the BPEL file and reacts accordingly.
  */
 public class BPELResourceChangeListener implements IResourceChangeListener {
 	class ResourceDeltaVisitor implements IResourceDeltaVisitor {

 		public boolean visit(final IResourceDelta delta) throws CoreException {
 			IResource target = delta.getResource();
 			// Bugzilla 320545:
 			if (Builder.isBPELFile(target)) {
 				handleBPEL(delta);
 			}
 			return true;
 		}

 		private void handleBPEL(final IResourceDelta delta)
 			throws CoreException {
 			IWorkspaceRunnable runnable = new IWorkspaceRunnable() {
 				public void run(IProgressMonitor monitor)
 					throws CoreException {
 					IFile target = (IFile) delta.getResource();
 					switch (delta.getKind()) {
 						case IResourceDelta.REMOVED :
 							{
 								int flags = delta.getFlags();
 								if ((flags & IResourceDelta.MOVED_TO) != 0) {
 									fileMoved(target, delta.getMovedToPath());
 								} else {
 									fileDeleted(target, monitor);
 								}
 								break;
 							}
 					}
 				}
 			};
 			ResourcesPlugin.getWorkspace().run(runnable, null);
 		}
 	}

 	protected IResourceDeltaVisitor visitor;
 	protected List<IFileChangeListener> listeners;

 	public BPELResourceChangeListener() {
 		listeners = new ArrayList<IFileChangeListener>();
 	}

 	/**
 	 * Objects like the BPELEditor can add listeners so they can be
 	 * notified and react when BPEL files change.
 	 */
 	public void addListener(IFileChangeListener listener) {
 		listeners.add(listener);
 	}

 	/**
 	 * Removed the listener.
 	 */
 	public void removeListener(IFileChangeListener listener) {
 		listeners.remove(listener);
 	}

 	public void resourceChanged(IResourceChangeEvent event) {
 		try {
 			event.getDelta().accept(getResourceDeltaVisitor());
 		} catch (CoreException e) {
 			BPELUIPlugin.log(e);
 		}
 	}

 	protected IResourceDeltaVisitor getResourceDeltaVisitor() {
 		if (visitor == null) {
 			visitor = new ResourceDeltaVisitor();
 		}
 		return visitor;
 	}

 	/**
 	 * Calculate and return all related files to this BPEL file.
 	 * Currently this list includes the .bpelex file and the
 	 * artifacts WSDL.
 	 */
 	protected static IFile[] getRelatedFiles(IFile bpelFile) {
 		IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
 		IPath bpelPath = bpelFile.getFullPath();
 		IFile bpelexFile = root.getFile(bpelPath.removeFileExtension().addFileExtension(IBPELUIConstants.EXTENSION_MODEL_EXTENSIONS));
 		String baseName = bpelPath.removeFileExtension().lastSegment();
 		IPath artifactsPath = bpelPath.removeFileExtension().removeLastSegments(1).append(baseName+"Artifacts").addFileExtension(IBPELUIConstants.EXTENSION_WSDL); //$NON-NLS-1$
 		IFile artifactsFile = root.getFile(artifactsPath);
 		return new IFile[] { bpelexFile, artifactsFile };
 	}

 	/**
 	 * Calculate a new name for the given related file, based on
 	 * the old file and the new base name. Need a clause in here
 	 * to recognize each of the files calculated in getRelatedFiles().
 	 */
 	protected static String getNewRelatedFileName(IFile oldFile, String newBaseName) {
 		if (IBPELUIConstants.EXTENSION_WSDL.equals(oldFile.getFileExtension())) {
 			return newBaseName + "Artifacts" + IBPELUIConstants.EXTENSION_DOT_WSDL; //$NON-NLS-1$
 		} else if (IBPELUIConstants.EXTENSION_MODEL_EXTENSIONS.equals(oldFile.getFileExtension())) {
 			return newBaseName + "." + IBPELUIConstants.EXTENSION_MODEL_EXTENSIONS; //$NON-NLS-1$
 		}
 		return null;
 	}

 	/**
 	 * If the BPEL file has moved we have to move related files (e.g. .bpelex).
 	 */
 	protected void fileMoved(IFile oldBPELFile, IPath newBPELFilePath)
 		throws CoreException {
 		IFile[] relatedFiles = getRelatedFiles(oldBPELFile);
 		for (int i = 0; i < relatedFiles.length; i++) {
 			move(relatedFiles[i], newBPELFilePath);
 		}

 		// Fix the bpelex file - it contains a file reference to the bpel
 		// file in each extension, which is incorrect now.
 		fixBPELExtensionFile(oldBPELFile, newBPELFilePath);

 		// notify listeners
 		IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
 		IFile newBPELFile = root.getFile(newBPELFilePath);
 		for (Iterator<IFileChangeListener> iter = listeners.iterator(); iter.hasNext();) {
 			IFileChangeListener listener = iter.next();
 			listener.moved(oldBPELFile, newBPELFile);
 		}
 	}

 	protected void fixBPELExtensionFile(IFile oldBPELFile, IPath newBPELFilePath) {
 		// Find the path of the new bpelex file
 		URI bpelURI = URI.createPlatformResourceURI(newBPELFilePath.toString() + "#/"); //$NON-NLS-1$
 		IPath newBPELEXFilePath = newBPELFilePath.removeFileExtension().addFileExtension(IBPELUIConstants.EXTENSION_MODEL_EXTENSIONS);
 		URI extensionsURI = URI.createPlatformResourceURI(newBPELEXFilePath.toString());

 		ResourceSet resourceSet = new ResourceSetImpl();
 		Resource extensionsResource = resourceSet.getResource(extensionsURI, true);
 		try {
 			extensionsResource.load(Collections.EMPTY_MAP);
 			EList extensionContents = extensionsResource.getContents();
 			ExtensionMap extensionMap = ExtensionmodelFactory.eINSTANCE.findExtensionMap(
 					IBPELUIConstants.MODEL_EXTENSIONS_NAMESPACE, extensionContents);
 			for (EObject next : extensionMap.keySet()) {
 				if (next.eIsProxy()) {
 					((InternalEObject) next).eSetProxyURI(bpelURI);
 				}
 			}
 			extensionsResource.save(Collections.EMPTY_MAP);
 		} catch (IOException e) {

 		}
 	}

 	/**
 	 * Used to move files derived from a given source file. Moves the oldRelatedFile
 	 * into the folder containing newBpelPath.
 	 */
 	protected void move(IFile oldRelatedFile, IPath newBpelPath) throws CoreException {
 		if (oldRelatedFile.exists()) {
 			IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
 			IFile newBpelFile = root.getFile(newBpelPath);
 			IContainer folder = newBpelFile.getParent();
 			String newBaseName = newBpelFile.getFullPath().removeFileExtension().lastSegment();
 			String newName = getNewRelatedFileName(oldRelatedFile, newBaseName);
 			IPath newRelatedFilePath = folder.getFullPath().append(newName);
 			oldRelatedFile.move(newRelatedFilePath, true, null);
 		}
 	}

 	/**
 	 * If the BPEL file has been deleted we have to delete related files (e.g. .bpelex).
 	 */
 	protected void fileDeleted(IFile oldBPELFile, IProgressMonitor monitor) throws CoreException {
 		// notify listeners
 		for (IFileChangeListener listener : listeners) {
 			listener.deleted(oldBPELFile);
 		}
 		// Delete bpelex file
 		IFile bpelex = BPELUtil.getBPELEXFile(oldBPELFile);
 		try {
 			bpelex.delete(true, monitor);
 		} catch (CoreException e) {
 			BPELUIPlugin.log(e);
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2005, 2012 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.bpel.ui;

	import java.io.IOException;
	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.Iterator;
	import java.util.List;

	import org.eclipse.bpel.common.extension.model.ExtensionMap;
	import org.eclipse.bpel.common.extension.model.ExtensionmodelFactory;
	import org.eclipse.bpel.model.CorrelationSet;
	import org.eclipse.bpel.model.messageproperties.Property;
	import org.eclipse.bpel.ui.util.BPELUtil;
	import org.eclipse.bpel.validator.Builder;
	import org.eclipse.core.resources.IContainer;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.IResourceChangeEvent;
	import org.eclipse.core.resources.IResourceChangeListener;
	import org.eclipse.core.resources.IResourceDelta;
	import org.eclipse.core.resources.IResourceDeltaVisitor;
	import org.eclipse.core.resources.IWorkspaceRoot;
	import org.eclipse.core.resources.IWorkspaceRunnable;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.emf.common.util.EList;
	import org.eclipse.emf.common.util.URI;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.emf.ecore.InternalEObject;
	import org.eclipse.emf.ecore.resource.Resource;
	import org.eclipse.emf.ecore.resource.ResourceSet;
	import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;


	/**
	* Listens to changes to the BPEL file and reacts accordingly.
	*/
	public class BPELResourceChangeListener implements IResourceChangeListener {
	class ResourceDeltaVisitor implements IResourceDeltaVisitor {

	public boolean visit(final IResourceDelta delta) throws CoreException {
	IResource target = delta.getResource();
	// Bugzilla 320545:
	if (Builder.isBPELFile(target)) {
	handleBPEL(delta);
	}
	return true;
	}

	private void handleBPEL(final IResourceDelta delta)
	throws CoreException {
	IWorkspaceRunnable runnable = new IWorkspaceRunnable() {
	public void run(IProgressMonitor monitor)
	throws CoreException {
	IFile target = (IFile) delta.getResource();
	switch (delta.getKind()) {
	case IResourceDelta.REMOVED :
	{
	int flags = delta.getFlags();
	if ((flags & IResourceDelta.MOVED_TO) != 0) {
	fileMoved(target, delta.getMovedToPath());
	} else {
	fileDeleted(target, monitor);
	}
	break;
	}
	}
	}
	};
	ResourcesPlugin.getWorkspace().run(runnable, null);
	}
	}

	protected IResourceDeltaVisitor visitor;
	protected List<IFileChangeListener> listeners;

	public BPELResourceChangeListener() {
	listeners = new ArrayList<IFileChangeListener>();
	}

	/**
	* Objects like the BPELEditor can add listeners so they can be
	* notified and react when BPEL files change.
	*/
	public void addListener(IFileChangeListener listener) {
	listeners.add(listener);
	}

	/**
	* Removed the listener.
	*/
	public void removeListener(IFileChangeListener listener) {
	listeners.remove(listener);
	}

	public void resourceChanged(IResourceChangeEvent event) {
	try {
	event.getDelta().accept(getResourceDeltaVisitor());
	} catch (CoreException e) {
	BPELUIPlugin.log(e);
	}
	}

	protected IResourceDeltaVisitor getResourceDeltaVisitor() {
	if (visitor == null) {
	visitor = new ResourceDeltaVisitor();
	}
	return visitor;
	}

	/**
	* Calculate and return all related files to this BPEL file.
	* Currently this list includes the .bpelex file and the
	* artifacts WSDL.
	*/
	protected static IFile[] getRelatedFiles(IFile bpelFile) {
	IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
	IPath bpelPath = bpelFile.getFullPath();
	IFile bpelexFile = root.getFile(bpelPath.removeFileExtension().addFileExtension(IBPELUIConstants.EXTENSION_MODEL_EXTENSIONS));
	String baseName = bpelPath.removeFileExtension().lastSegment();
	IPath artifactsPath = bpelPath.removeFileExtension().removeLastSegments(1).append(baseName+"Artifacts").addFileExtension(IBPELUIConstants.EXTENSION_WSDL); //$NON-NLS-1$
	IFile artifactsFile = root.getFile(artifactsPath);
	return new IFile[] { bpelexFile, artifactsFile };
	}

	/**
	* Calculate a new name for the given related file, based on
	* the old file and the new base name. Need a clause in here
	* to recognize each of the files calculated in getRelatedFiles().
	*/
	protected static String getNewRelatedFileName(IFile oldFile, String newBaseName) {
	if (IBPELUIConstants.EXTENSION_WSDL.equals(oldFile.getFileExtension())) {
	return newBaseName + "Artifacts" + IBPELUIConstants.EXTENSION_DOT_WSDL; //$NON-NLS-1$
	} else if (IBPELUIConstants.EXTENSION_MODEL_EXTENSIONS.equals(oldFile.getFileExtension())) {
	return newBaseName + "." + IBPELUIConstants.EXTENSION_MODEL_EXTENSIONS; //$NON-NLS-1$
	}
	return null;
	}

	/**
	* If the BPEL file has moved we have to move related files (e.g. .bpelex).
	*/
	protected void fileMoved(IFile oldBPELFile, IPath newBPELFilePath)
	throws CoreException {
	IFile[] relatedFiles = getRelatedFiles(oldBPELFile);
	for (int i = 0; i < relatedFiles.length; i++) {
	move(relatedFiles[i], newBPELFilePath);
	}

	// Fix the bpelex file - it contains a file reference to the bpel
	// file in each extension, which is incorrect now.
	fixBPELExtensionFile(oldBPELFile, newBPELFilePath);

	// notify listeners
	IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
	IFile newBPELFile = root.getFile(newBPELFilePath);
	for (Iterator<IFileChangeListener> iter = listeners.iterator(); iter.hasNext();) {
	IFileChangeListener listener = iter.next();
	listener.moved(oldBPELFile, newBPELFile);
	}
	}

	protected void fixBPELExtensionFile(IFile oldBPELFile, IPath newBPELFilePath) {
	// Find the path of the new bpelex file
	URI bpelURI = URI.createPlatformResourceURI(newBPELFilePath.toString() + "#/"); //$NON-NLS-1$
	IPath newBPELEXFilePath = newBPELFilePath.removeFileExtension().addFileExtension(IBPELUIConstants.EXTENSION_MODEL_EXTENSIONS);
	URI extensionsURI = URI.createPlatformResourceURI(newBPELEXFilePath.toString());

	ResourceSet resourceSet = new ResourceSetImpl();
	Resource extensionsResource = resourceSet.getResource(extensionsURI, true);
	try {
	extensionsResource.load(Collections.EMPTY_MAP);
	EList extensionContents = extensionsResource.getContents();
	ExtensionMap extensionMap = ExtensionmodelFactory.eINSTANCE.findExtensionMap(
	IBPELUIConstants.MODEL_EXTENSIONS_NAMESPACE, extensionContents);
	for (EObject next : extensionMap.keySet()) {
	if (next.eIsProxy()) {
	((InternalEObject) next).eSetProxyURI(bpelURI);
	}
	}
	extensionsResource.save(Collections.EMPTY_MAP);
	} catch (IOException e) {

	}
	}

	/**
	* Used to move files derived from a given source file. Moves the oldRelatedFile
	* into the folder containing newBpelPath.
	*/
	protected void move(IFile oldRelatedFile, IPath newBpelPath) throws CoreException {
	if (oldRelatedFile.exists()) {
	IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
	IFile newBpelFile = root.getFile(newBpelPath);
	IContainer folder = newBpelFile.getParent();
	String newBaseName = newBpelFile.getFullPath().removeFileExtension().lastSegment();
	String newName = getNewRelatedFileName(oldRelatedFile, newBaseName);
	IPath newRelatedFilePath = folder.getFullPath().append(newName);
	oldRelatedFile.move(newRelatedFilePath, true, null);
	}
	}

	/**
	* If the BPEL file has been deleted we have to delete related files (e.g. .bpelex).
	*/
	protected void fileDeleted(IFile oldBPELFile, IProgressMonitor monitor) throws CoreException {
	// notify listeners
	for (IFileChangeListener listener : listeners) {
	listener.deleted(oldBPELFile);
	}
	// Delete bpelex file
	IFile bpelex = BPELUtil.getBPELEXFile(oldBPELFile);
	try {
	bpelex.delete(true, monitor);
	} catch (CoreException e) {
	BPELUIPlugin.log(e);
	}
	}
	}