bundles/org.eclipse.wst.xml.core/src-emfModelSynch/org/eclipse/wst/xml/core/internal/emf2xml/EMF2DOMSSERenderer.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2001, 2005 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.wst.xml.core.internal.emf2xml;


 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;

 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IFolder;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.resource.ResourceSet;
 import org.eclipse.emf.ecore.util.EcoreUtil;
 import org.eclipse.jem.util.emf.workbench.ProjectResourceSet;
 import org.eclipse.jem.util.logger.proxy.Logger;
 import org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapter;
 import org.eclipse.wst.common.internal.emf.resource.EMF2DOMRenderer;
 import org.eclipse.wst.common.internal.emf.resource.TranslatorResource;
 import org.eclipse.wst.common.internal.emf.utilities.DOMUtilities;
 import org.eclipse.wst.common.internal.emfworkbench.WorkbenchResourceHelper;
 import org.eclipse.wst.common.internal.emfworkbench.integration.ResourceSetWorkbenchEditSynchronizer;
 import org.eclipse.wst.sse.core.internal.model.ModelLifecycleEvent;
 import org.eclipse.wst.sse.core.internal.provisional.IModelLifecycleListener;
 import org.eclipse.wst.sse.core.internal.provisional.IModelManager;
 import org.eclipse.wst.sse.core.internal.provisional.IModelStateListener;
 import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
 import org.eclipse.wst.sse.core.internal.provisional.StructuredModelManager;
 import org.eclipse.wst.xml.core.internal.document.DocumentTypeImpl;
 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;
 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
 import org.w3c.dom.Node;

 public class EMF2DOMSSERenderer extends EMF2DOMRenderer implements IModelStateListener, IModelLifecycleListener {

 	/** The XML DOM model */
 	protected IDOMModel xmlModel;

 	/** Used internally; the unique id for the xml model */
 	protected String xmlModelId;

 	private IModelManager modelManager;

 	protected Object aboutToChangeNode = null;

 	protected boolean xmlModelReverted = false;

 	protected boolean isBatchChanges = false;

 	private boolean isSaving = false;

 	public EMF2DOMSSERenderer() {
 		super();
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see com.ibm.etools.emf2xml.impl.EMF2DOMRenderer#managesDOMAdapters()
 	 */
 	protected boolean managesDOMAdapters() {
 		return false;
 	}

 	protected EMF2DOMAdapter createRootDOMAdapter() {
 		return new EMF2DOMSSEAdapter(getResource(), document, this, getResource().getRootTranslator());
 	}

 	public void deRegisterAsModelStateListener() {
 		if (xmlModel != null)
 			xmlModel.removeModelStateListener(this);
 	}

 	public void deRegisterAsModelLifecycleListener() {
 		if (xmlModel != null)
 			xmlModel.removeModelLifecycleListener(this);
 	}

 	/**
 	 * Return the DOM model for this resource.
 	 */
 	public IDOMModel getXMLModel() {
 		return xmlModel;
 	}

 	public String getXMLModelId() {
 		return xmlModelId;
 	}

 	public boolean isModified() {
 		return (getXMLModel() != null && getXMLModel().isDirty());
 	}

 	public void modelAboutToBeChanged(IStructuredModel model) {
 		if (model.getStructuredDocument() != null)
 			aboutToChangeNode = model.getStructuredDocument().getFirstStructuredDocumentRegion();
 	}

 	public void modelChanged(IStructuredModel model) {
 		if (isBatchChanges)
 			return;
 		try {
 			if (aboutToChangeNode != null && model.getStructuredDocument() != null && model.getStructuredDocument().getFirstStructuredDocumentRegion() != aboutToChangeNode) {
 				modelAccessForWrite();
 				try {
 					xmlModelReverted = true;
 					resource.unload();
 				} finally {
 					if (getXMLModel() != null)
 						getXMLModel().releaseFromEdit();
 				}
 			}
 		} finally {
 			aboutToChangeNode = null;
 		}
 	}

 	public void accessForRead() {
 		if (!resource.isNew()) {
 			String id = getModelManagerId();
 			getModelManager().getExistingModelForRead(id);
 		}
 	}

 	public void accessForWrite() {
 		modelAccessForWrite();
 	}

 	private void modelAccessForWrite() {
 		String id = getModelManagerId();
 		getModelManager().getExistingModelForEdit(id);
 	}

 	public void modelDirtyStateChanged(IStructuredModel model, boolean isDirty) {
 		if (!isDirty && resource.isModified()) { //The XMLModel was saved
 			resource.setModified(false);
 			long stamp = WorkbenchResourceHelper.computeModificationStamp(resource);
 			WorkbenchResourceHelper.setSynhronizationStamp(resource, stamp);
 			ResourceSetWorkbenchEditSynchronizer synchronizer = (ResourceSetWorkbenchEditSynchronizer) ((ProjectResourceSet) resource.getResourceSet()).getSynchronizer();
 			IFile aFile = WorkbenchResourceHelper.getFile(resource);
 			synchronizer.preSave(aFile);
 		}
 		if (isDirty)
 			resource.setModified(true);
 	}

 	public void modelResourceDeleted(IStructuredModel model) {
 		//Do nothing
 	}

 	public void modelResourceMoved(IStructuredModel oldModel, IStructuredModel newModel) {
 		//Do nothing
 	}

 	/**
 	 * This method is called just prior to being removed from the ResourceSet. Ensure that all
 	 * reference counts to the XMLModel are removed.
 	 */
 	public void preDelete() {
 		if (resource.isLoaded())
 			deregisterFromXMLModel();
 	}

 	public void preUnload() {
 		deregisterFromXMLModel();
 	}

 	private void deregisterFromXMLModel() {
 		deRegisterAsModelStateListener();
 		deRegisterAsModelLifecycleListener();
 		// This try/catch block is a hack to fix defect 204114. This occurs
 		// because
 		// the model manager plugin is shut down and unloaded before the j2ee
 		// plugin.
 		// Calling getModelManager() can result in a class cast exception that
 		// should
 		// be ignored.
 		//ModelManager mgr = null;
 		try {
 			getModelManager();
 		} catch (ClassCastException exc) {
 			return;
 		}
 		if (xmlModel != null) {
 			int writeCount = resource.getWriteCount();
 			int readCount = resource.getReadCount();
 			for (int i = 0; i < writeCount; i++)
 				xmlModel.releaseFromEdit();
 			for (int ii = 0; ii < readCount; ii++)
 				xmlModel.releaseFromRead();
 		}
 		EMF2DOMAdapter adapter = (EMF2DOMAdapter) EcoreUtil.getAdapter(resource.eAdapters(), EMF2DOMAdapter.ADAPTER_CLASS);
 		if (adapter != null) {
 			adapter.removeAdapters(adapter.getNode());
 		}
 		xmlModel = null;
 		xmlModelId = null;
 	}

 	/**
 	 * Insert the method's description here. Creation date: (9/7/2001 10:49:53 AM)
 	 */
 	public void registerAsModelStateListener() {
 		this.xmlModel.addModelStateListener(this);
 	}

 	public void registerAsModelLifecycleListener() {
 		this.xmlModel.addModelLifecycleListener(this);
 	}

 	/**
 	 * Return the DOM model for this resource.
 	 */
 	public void setXMLModel(IDOMModel xmlModel) {
 		deRegisterAsModelStateListener();
 		deRegisterAsModelLifecycleListener();
 		this.xmlModel = xmlModel;
 		registerAsModelStateListener();
 		registerAsModelLifecycleListener();
 	}

 	public void setXMLModelId(String id) {
 		xmlModelId = id;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see com.ibm.etools.emf2xml.Renderer#doSave(java.io.OutputStream, java.util.Map)
 	 */
 	public void doSave(OutputStream outputStream, Map options) throws IOException {

 		try {
 			isSaving = true;
 			if (null != outputStream) {
 				throw new RuntimeException(UIResourceHandler.getString("EMF2DOMSedRenderer_UI_0", new Object[]{this.getClass().getName()}));} //$NON-NLS-1$
 			createDOMTreeIfNecessary();
 			ResourceSetWorkbenchEditSynchronizer synchronizer = (ResourceSetWorkbenchEditSynchronizer) ((ProjectResourceSet) resource.getResourceSet()).getSynchronizer();
 			IFile aFile = WorkbenchResourceHelper.getFile(resource);
 			try {
 				synchronizer.preSave(aFile);
 				xmlModel.save(aFile);
 			} catch (CoreException ex) {
 				synchronizer.removeFromRecentlySavedList(aFile);
 				Logger.getLogger().logError(ex);
 			}
 			cacheSynchronizationStamp();
 		} finally {
 			isSaving = false;
 		}
 	}

 	/**
 	 * @see com.ibm.etools.common.mof2dom.XMLDOMResource#wasReverted()
 	 */
 	public boolean wasReverted() {
 		return xmlModelReverted;
 	}

 	protected IModelManager getModelManager() {
 		if (modelManager == null)
 			modelManager = StructuredModelManager.getModelManager();
 		return modelManager;
 	}

 	/**
 	 * Return id used to key the XML resource in the XML ModelManager.
 	 */
 	protected String getModelManagerId() {
 		if (xmlModelId == null) {
 			IFile file = WorkbenchResourceHelper.getFile(getResource());
 			if (file != null) {
 				xmlModelId = getModelManager().calculateId(file);
 			} else {
 				xmlModelId = resource.getURI() + Long.toString(System.currentTimeMillis());
 			}
 		}
 		return xmlModelId;
 	}

 	public void releaseFromRead() {
 		if (xmlModel != null)
 			xmlModel.releaseFromRead();
 	}

 	public void releaseFromWrite() {
 		if (xmlModel != null)
 			xmlModel.releaseFromEdit();
 	}

 	protected ResourceSet getResourceSet() {
 		return resource == null ? null : resource.getResourceSet();
 	}

 	public boolean isShared() {
 		if (getResourceSet() == null || xmlModel == null)
 			return false;
 		return xmlModel.isShared();
 	}

 	public boolean isSharedForWrite() {
 		if (getResourceSet() == null || xmlModel == null)
 			return false;
 		return xmlModel.isSharedForEdit();
 	}

 	/**
 	 * Create a new Document given
 	 *
 	 * @aResource.
 	 */
 	protected void createDocument() {
 		TranslatorResource res = getResource();
 		res.setDefaults();
 		IFile file = WorkbenchResourceHelper.getFile(resource);
 		InputStream is = DOMUtilities.createHeaderInputStream(res.getDoctype(), res.getPublicId(), res.getSystemId());
 		if (is == null)
 			return;
 		try {
 			try {
 				List folders = new ArrayList();
 				IContainer container = file.getParent();
 				while (null != container && !container.exists() && container instanceof IFolder) {
 					folders.add(container);
 					container = container.getParent();
 				}
 				IFolder folder = null;
 				for (int i = 0; i < folders.size(); i++) {
 					folder = (IFolder) folders.get(i);
 					folder.create(true, true, null);
 				}
 				file.create(is, true, null);
 				file.setLocal(true, 1, null);
 			} catch (CoreException e1) {
 				org.eclipse.jem.util.logger.proxy.Logger.getLogger().logError(e1);
 			} finally {
 				if (null != is) {
 					is.close();
 				}
 			}
 			initializeXMLModel(file, true);
 		} catch (java.io.IOException ex) {
 			org.eclipse.jem.util.logger.proxy.Logger.getLogger().logError(UIResourceHandler.getString("Unexpected_IO_exception_occurred_creating_xml_document_1_EXC_"));//$NON-NLS-1$
 			org.eclipse.jem.util.logger.proxy.Logger.getLogger().logError(ex);
 		}
 	}

 	protected void createDOMTreeIfNecessary() {
 		if (needsToCreateDOM)
 			createDOMTree();
 	}

 	private IDOMModel initializeXMLModel(IFile file, boolean forWrite) throws UnsupportedEncodingException, IOException {
 		if (file == null || !file.exists())
 			throw new FileNotFoundException((file == null) ? "null" : file.getFullPath().toOSString()); //$NON-NLS-1$
 		try {
 			if (forWrite) {
 				setXMLModel((IDOMModel) getModelManager().getModelForEdit(file));
 			}
 			else {
 				setXMLModel((IDOMModel) getModelManager().getModelForRead(file));
 			}
 			setXMLModelId(getXMLModel().getId());
 			needsToCreateDOM = false;
 		} catch (CoreException e) {
 			org.eclipse.jem.util.logger.proxy.Logger.getLogger().logError(e);
 			return null;
 		}
 		String id = getModelManager().calculateId(file);
 		syncReferenceCounts(id, forWrite);
 		if (xmlModel != null)
 			document = xmlModel.getDocument();
 		return xmlModel;
 	}

 	private void syncReferenceCounts(String id, boolean forWrite) {
 		int editIndex = 0, readIndex = 0;
 		if (forWrite)
 			editIndex++;
 		else
 			readIndex++;
 		int writeCount = resource.getWriteCount();
 		int readCount = resource.getReadCount();
 		for (int i = writeCount; i > editIndex; i--)
 			modelManager.getExistingModelForEdit(id);
 		for (int i = readCount; i > readIndex; i--)
 			modelManager.getExistingModelForRead(id);
 	}

 	protected void loadDocument(InputStream in, Map options) throws IOException {
 		if (null != in) {
 			throw new RuntimeException(UIResourceHandler.getString("EMF2DOMSedRenderer_UI_1", new Object[]{this.getClass().getName()}));} //$NON-NLS-1$
 		IFile file = WorkbenchResourceHelper.getFile(resource);
 		initializeXMLModel(file, (resource.getWriteCount() != 0));
 		cacheSynchronizationStamp();
 	}

 	private void cacheSynchronizationStamp() {
 		IFile file = WorkbenchResourceHelper.getFile(resource);
 		if (file != null) {
 			if (xmlModel != null)
 				xmlModel.resetSynchronizationStamp(file);
 		}
 	}

 	public void setBatchMode(boolean isBatch) {
 		if (isBatch) {
 			isBatchChanges = true;
 			getXMLModel().aboutToChangeModel();
 			setRootNodeAdapterNotificationEnabled(false);
 		}
 		else {
 			getXMLModel().changedModel();
 			setRootNodeAdapterNotificationEnabled(true);
 			isBatchChanges = false;
 		}
 	}
 	public boolean isBatchMode() {
 		return isBatchChanges;
 	}

 	private void setRootNodeAdapterNotificationEnabled(boolean b) {
 		EObject root = resource.getRootObject();
 		if (root != null) {
 			EMF2DOMAdapter adapter = (EMF2DOMAdapter) EcoreUtil.getExistingAdapter(root, EMF2DOMAdapter.ADAPTER_CLASS);
 			if (adapter != null)
 				adapter.setNotificationEnabled(b);
 		}
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see com.ibm.etools.emf2xml.impl.EMF2DOMRenderer#getExistingDOMAdapter(org.w3c.dom.Node)
 	 */
 	public EMF2DOMAdapter getExistingDOMAdapter(Node node) {
 		IDOMNode xNode = (IDOMNode) node;
 		return (EMF2DOMSSEAdapter) xNode.getAdapterFor(EMF2DOMAdapter.ADAPTER_CLASS);
 	}

 	public void removeDOMAdapter(Node aNode, EMF2DOMAdapter anAdapter) {
 		((IDOMNode) aNode).removeAdapter((EMF2DOMSSEAdapter) anAdapter);
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.jem.internal.util.emf.xml.EMF2DOMRenderer#replaceDocumentType(java.lang.String,
 	 *      java.lang.String, java.lang.String)
 	 */
 	public void replaceDocumentType(String docTypeName, String publicId, String systemId) {
 		if (document == null)
 			return;
 		DocumentTypeImpl docType = (DocumentTypeImpl) document.getDoctype();
 		if (docType == null)
 			return;
 		if (publicId == null && systemId == null)
 			document.removeChild(docType);
 		else {
 			docType.setPublicId(publicId);
 			docType.setSystemId(systemId);
 		}
 	}

 	public boolean useStreamsForIO() {
 		return false;
 	}

 	public void processPostModelEvent(ModelLifecycleEvent event) {
 		// TODO Auto-generated method stub

 	}

 	public void processPreModelEvent(ModelLifecycleEvent event) {
 		if (!isSaving) {
 			if (event.getType() == ModelLifecycleEvent.MODEL_SAVED) {
 				ResourceSetWorkbenchEditSynchronizer synchronizer = (ResourceSetWorkbenchEditSynchronizer) ((ProjectResourceSet) resource.getResourceSet()).getSynchronizer();
 				IFile aFile = WorkbenchResourceHelper.getFile(resource);
 				synchronizer.preSave(aFile);
 			}
 		}
 	}

 	public void modelAboutToBeReinitialized(IStructuredModel structuredModel) {
 		// TODO Auto-generated method stub

 	}

 	public void modelReinitialized(IStructuredModel structuredModel) {
 		// TODO Auto-generated method stub

 	}
 }
	/*******************************************************************************
	* Copyright (c) 2001, 2005 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.wst.xml.core.internal.emf2xml;


	import java.io.FileNotFoundException;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.OutputStream;
	import java.io.UnsupportedEncodingException;
	import java.util.ArrayList;
	import java.util.List;
	import java.util.Map;

	import org.eclipse.core.resources.IContainer;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IFolder;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.emf.ecore.resource.ResourceSet;
	import org.eclipse.emf.ecore.util.EcoreUtil;
	import org.eclipse.jem.util.emf.workbench.ProjectResourceSet;
	import org.eclipse.jem.util.logger.proxy.Logger;
	import org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapter;
	import org.eclipse.wst.common.internal.emf.resource.EMF2DOMRenderer;
	import org.eclipse.wst.common.internal.emf.resource.TranslatorResource;
	import org.eclipse.wst.common.internal.emf.utilities.DOMUtilities;
	import org.eclipse.wst.common.internal.emfworkbench.WorkbenchResourceHelper;
	import org.eclipse.wst.common.internal.emfworkbench.integration.ResourceSetWorkbenchEditSynchronizer;
	import org.eclipse.wst.sse.core.internal.model.ModelLifecycleEvent;
	import org.eclipse.wst.sse.core.internal.provisional.IModelLifecycleListener;
	import org.eclipse.wst.sse.core.internal.provisional.IModelManager;
	import org.eclipse.wst.sse.core.internal.provisional.IModelStateListener;
	import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
	import org.eclipse.wst.sse.core.internal.provisional.StructuredModelManager;
	import org.eclipse.wst.xml.core.internal.document.DocumentTypeImpl;
	import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;
	import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
	import org.w3c.dom.Node;

	public class EMF2DOMSSERenderer extends EMF2DOMRenderer implements IModelStateListener, IModelLifecycleListener {

	/** The XML DOM model */
	protected IDOMModel xmlModel;

	/** Used internally; the unique id for the xml model */
	protected String xmlModelId;

	private IModelManager modelManager;

	protected Object aboutToChangeNode = null;

	protected boolean xmlModelReverted = false;

	protected boolean isBatchChanges = false;

	private boolean isSaving = false;

	public EMF2DOMSSERenderer() {
	super();
	}

	/*
	* (non-Javadoc)
	*
	* @see com.ibm.etools.emf2xml.impl.EMF2DOMRenderer#managesDOMAdapters()
	*/
	protected boolean managesDOMAdapters() {
	return false;
	}

	protected EMF2DOMAdapter createRootDOMAdapter() {
	return new EMF2DOMSSEAdapter(getResource(), document, this, getResource().getRootTranslator());
	}

	public void deRegisterAsModelStateListener() {
	if (xmlModel != null)
	xmlModel.removeModelStateListener(this);
	}

	public void deRegisterAsModelLifecycleListener() {
	if (xmlModel != null)
	xmlModel.removeModelLifecycleListener(this);
	}

	/**
	* Return the DOM model for this resource.
	*/
	public IDOMModel getXMLModel() {
	return xmlModel;
	}

	public String getXMLModelId() {
	return xmlModelId;
	}

	public boolean isModified() {
	return (getXMLModel() != null && getXMLModel().isDirty());
	}

	public void modelAboutToBeChanged(IStructuredModel model) {
	if (model.getStructuredDocument() != null)
	aboutToChangeNode = model.getStructuredDocument().getFirstStructuredDocumentRegion();
	}

	public void modelChanged(IStructuredModel model) {
	if (isBatchChanges)
	return;
	try {
	if (aboutToChangeNode != null && model.getStructuredDocument() != null && model.getStructuredDocument().getFirstStructuredDocumentRegion() != aboutToChangeNode) {
	modelAccessForWrite();
	try {
	xmlModelReverted = true;
	resource.unload();
	} finally {
	if (getXMLModel() != null)
	getXMLModel().releaseFromEdit();
	}
	}
	} finally {
	aboutToChangeNode = null;
	}
	}

	public void accessForRead() {
	if (!resource.isNew()) {
	String id = getModelManagerId();
	getModelManager().getExistingModelForRead(id);
	}
	}

	public void accessForWrite() {
	modelAccessForWrite();
	}

	private void modelAccessForWrite() {
	String id = getModelManagerId();
	getModelManager().getExistingModelForEdit(id);
	}

	public void modelDirtyStateChanged(IStructuredModel model, boolean isDirty) {
	if (!isDirty && resource.isModified()) { //The XMLModel was saved
	resource.setModified(false);
	long stamp = WorkbenchResourceHelper.computeModificationStamp(resource);
	WorkbenchResourceHelper.setSynhronizationStamp(resource, stamp);
	ResourceSetWorkbenchEditSynchronizer synchronizer = (ResourceSetWorkbenchEditSynchronizer) ((ProjectResourceSet) resource.getResourceSet()).getSynchronizer();
	IFile aFile = WorkbenchResourceHelper.getFile(resource);
	synchronizer.preSave(aFile);
	}
	if (isDirty)
	resource.setModified(true);
	}

	public void modelResourceDeleted(IStructuredModel model) {
	//Do nothing
	}

	public void modelResourceMoved(IStructuredModel oldModel, IStructuredModel newModel) {
	//Do nothing
	}

	/**
	* This method is called just prior to being removed from the ResourceSet. Ensure that all
	* reference counts to the XMLModel are removed.
	*/
	public void preDelete() {
	if (resource.isLoaded())
	deregisterFromXMLModel();
	}

	public void preUnload() {
	deregisterFromXMLModel();
	}

	private void deregisterFromXMLModel() {
	deRegisterAsModelStateListener();
	deRegisterAsModelLifecycleListener();
	// This try/catch block is a hack to fix defect 204114. This occurs
	// because
	// the model manager plugin is shut down and unloaded before the j2ee
	// plugin.
	// Calling getModelManager() can result in a class cast exception that
	// should
	// be ignored.
	//ModelManager mgr = null;
	try {
	getModelManager();
	} catch (ClassCastException exc) {
	return;
	}
	if (xmlModel != null) {
	int writeCount = resource.getWriteCount();
	int readCount = resource.getReadCount();
	for (int i = 0; i < writeCount; i++)
	xmlModel.releaseFromEdit();
	for (int ii = 0; ii < readCount; ii++)
	xmlModel.releaseFromRead();
	}
	EMF2DOMAdapter adapter = (EMF2DOMAdapter) EcoreUtil.getAdapter(resource.eAdapters(), EMF2DOMAdapter.ADAPTER_CLASS);
	if (adapter != null) {
	adapter.removeAdapters(adapter.getNode());
	}
	xmlModel = null;
	xmlModelId = null;
	}

	/**
	* Insert the method's description here. Creation date: (9/7/2001 10:49:53 AM)
	*/
	public void registerAsModelStateListener() {
	this.xmlModel.addModelStateListener(this);
	}

	public void registerAsModelLifecycleListener() {
	this.xmlModel.addModelLifecycleListener(this);
	}

	/**
	* Return the DOM model for this resource.
	*/
	public void setXMLModel(IDOMModel xmlModel) {
	deRegisterAsModelStateListener();
	deRegisterAsModelLifecycleListener();
	this.xmlModel = xmlModel;
	registerAsModelStateListener();
	registerAsModelLifecycleListener();
	}

	public void setXMLModelId(String id) {
	xmlModelId = id;
	}

	/*
	* (non-Javadoc)
	*
	* @see com.ibm.etools.emf2xml.Renderer#doSave(java.io.OutputStream, java.util.Map)
	*/
	public void doSave(OutputStream outputStream, Map options) throws IOException {

	try {
	isSaving = true;
	if (null != outputStream) {
	throw new RuntimeException(UIResourceHandler.getString("EMF2DOMSedRenderer_UI_0", new Object[]{this.getClass().getName()}));} //$NON-NLS-1$
	createDOMTreeIfNecessary();
	ResourceSetWorkbenchEditSynchronizer synchronizer = (ResourceSetWorkbenchEditSynchronizer) ((ProjectResourceSet) resource.getResourceSet()).getSynchronizer();
	IFile aFile = WorkbenchResourceHelper.getFile(resource);
	try {
	synchronizer.preSave(aFile);
	xmlModel.save(aFile);
	} catch (CoreException ex) {
	synchronizer.removeFromRecentlySavedList(aFile);
	Logger.getLogger().logError(ex);
	}
	cacheSynchronizationStamp();
	} finally {
	isSaving = false;
	}
	}

	/**
	* @see com.ibm.etools.common.mof2dom.XMLDOMResource#wasReverted()
	*/
	public boolean wasReverted() {
	return xmlModelReverted;
	}

	protected IModelManager getModelManager() {
	if (modelManager == null)
	modelManager = StructuredModelManager.getModelManager();
	return modelManager;
	}

	/**
	* Return id used to key the XML resource in the XML ModelManager.
	*/
	protected String getModelManagerId() {
	if (xmlModelId == null) {
	IFile file = WorkbenchResourceHelper.getFile(getResource());
	if (file != null) {
	xmlModelId = getModelManager().calculateId(file);
	} else {
	xmlModelId = resource.getURI() + Long.toString(System.currentTimeMillis());
	}
	}
	return xmlModelId;
	}

	public void releaseFromRead() {
	if (xmlModel != null)
	xmlModel.releaseFromRead();
	}

	public void releaseFromWrite() {
	if (xmlModel != null)
	xmlModel.releaseFromEdit();
	}

	protected ResourceSet getResourceSet() {
	return resource == null ? null : resource.getResourceSet();
	}

	public boolean isShared() {
	if (getResourceSet() == null \|\| xmlModel == null)
	return false;
	return xmlModel.isShared();
	}

	public boolean isSharedForWrite() {
	if (getResourceSet() == null \|\| xmlModel == null)
	return false;
	return xmlModel.isSharedForEdit();
	}

	/**
	* Create a new Document given
	*
	* @aResource.
	*/
	protected void createDocument() {
	TranslatorResource res = getResource();
	res.setDefaults();
	IFile file = WorkbenchResourceHelper.getFile(resource);
	InputStream is = DOMUtilities.createHeaderInputStream(res.getDoctype(), res.getPublicId(), res.getSystemId());
	if (is == null)
	return;
	try {
	try {
	List folders = new ArrayList();
	IContainer container = file.getParent();
	while (null != container && !container.exists() && container instanceof IFolder) {
	folders.add(container);
	container = container.getParent();
	}
	IFolder folder = null;
	for (int i = 0; i < folders.size(); i++) {
	folder = (IFolder) folders.get(i);
	folder.create(true, true, null);
	}
	file.create(is, true, null);
	file.setLocal(true, 1, null);
	} catch (CoreException e1) {
	org.eclipse.jem.util.logger.proxy.Logger.getLogger().logError(e1);
	} finally {
	if (null != is) {
	is.close();
	}
	}
	initializeXMLModel(file, true);
	} catch (java.io.IOException ex) {
	org.eclipse.jem.util.logger.proxy.Logger.getLogger().logError(UIResourceHandler.getString("Unexpected_IO_exception_occurred_creating_xml_document_1_EXC_"));//$NON-NLS-1$
	org.eclipse.jem.util.logger.proxy.Logger.getLogger().logError(ex);
	}
	}

	protected void createDOMTreeIfNecessary() {
	if (needsToCreateDOM)
	createDOMTree();
	}

	private IDOMModel initializeXMLModel(IFile file, boolean forWrite) throws UnsupportedEncodingException, IOException {
	if (file == null \|\| !file.exists())
	throw new FileNotFoundException((file == null) ? "null" : file.getFullPath().toOSString()); //$NON-NLS-1$
	try {
	if (forWrite) {
	setXMLModel((IDOMModel) getModelManager().getModelForEdit(file));
	}
	else {
	setXMLModel((IDOMModel) getModelManager().getModelForRead(file));
	}
	setXMLModelId(getXMLModel().getId());
	needsToCreateDOM = false;
	} catch (CoreException e) {
	org.eclipse.jem.util.logger.proxy.Logger.getLogger().logError(e);
	return null;
	}
	String id = getModelManager().calculateId(file);
	syncReferenceCounts(id, forWrite);
	if (xmlModel != null)
	document = xmlModel.getDocument();
	return xmlModel;
	}

	private void syncReferenceCounts(String id, boolean forWrite) {
	int editIndex = 0, readIndex = 0;
	if (forWrite)
	editIndex++;
	else
	readIndex++;
	int writeCount = resource.getWriteCount();
	int readCount = resource.getReadCount();
	for (int i = writeCount; i > editIndex; i--)
	modelManager.getExistingModelForEdit(id);
	for (int i = readCount; i > readIndex; i--)
	modelManager.getExistingModelForRead(id);
	}

	protected void loadDocument(InputStream in, Map options) throws IOException {
	if (null != in) {
	throw new RuntimeException(UIResourceHandler.getString("EMF2DOMSedRenderer_UI_1", new Object[]{this.getClass().getName()}));} //$NON-NLS-1$
	IFile file = WorkbenchResourceHelper.getFile(resource);
	initializeXMLModel(file, (resource.getWriteCount() != 0));
	cacheSynchronizationStamp();
	}

	private void cacheSynchronizationStamp() {
	IFile file = WorkbenchResourceHelper.getFile(resource);
	if (file != null) {
	if (xmlModel != null)
	xmlModel.resetSynchronizationStamp(file);
	}
	}

	public void setBatchMode(boolean isBatch) {
	if (isBatch) {
	isBatchChanges = true;
	getXMLModel().aboutToChangeModel();
	setRootNodeAdapterNotificationEnabled(false);
	}
	else {
	getXMLModel().changedModel();
	setRootNodeAdapterNotificationEnabled(true);
	isBatchChanges = false;
	}
	}
	public boolean isBatchMode() {
	return isBatchChanges;
	}

	private void setRootNodeAdapterNotificationEnabled(boolean b) {
	EObject root = resource.getRootObject();
	if (root != null) {
	EMF2DOMAdapter adapter = (EMF2DOMAdapter) EcoreUtil.getExistingAdapter(root, EMF2DOMAdapter.ADAPTER_CLASS);
	if (adapter != null)
	adapter.setNotificationEnabled(b);
	}
	}

	/*
	* (non-Javadoc)
	*
	* @see com.ibm.etools.emf2xml.impl.EMF2DOMRenderer#getExistingDOMAdapter(org.w3c.dom.Node)
	*/
	public EMF2DOMAdapter getExistingDOMAdapter(Node node) {
	IDOMNode xNode = (IDOMNode) node;
	return (EMF2DOMSSEAdapter) xNode.getAdapterFor(EMF2DOMAdapter.ADAPTER_CLASS);
	}

	public void removeDOMAdapter(Node aNode, EMF2DOMAdapter anAdapter) {
	((IDOMNode) aNode).removeAdapter((EMF2DOMSSEAdapter) anAdapter);
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.jem.internal.util.emf.xml.EMF2DOMRenderer#replaceDocumentType(java.lang.String,
	* java.lang.String, java.lang.String)
	*/
	public void replaceDocumentType(String docTypeName, String publicId, String systemId) {
	if (document == null)
	return;
	DocumentTypeImpl docType = (DocumentTypeImpl) document.getDoctype();
	if (docType == null)
	return;
	if (publicId == null && systemId == null)
	document.removeChild(docType);
	else {
	docType.setPublicId(publicId);
	docType.setSystemId(systemId);
	}
	}

	public boolean useStreamsForIO() {
	return false;
	}

	public void processPostModelEvent(ModelLifecycleEvent event) {
	// TODO Auto-generated method stub

	}

	public void processPreModelEvent(ModelLifecycleEvent event) {
	if (!isSaving) {
	if (event.getType() == ModelLifecycleEvent.MODEL_SAVED) {
	ResourceSetWorkbenchEditSynchronizer synchronizer = (ResourceSetWorkbenchEditSynchronizer) ((ProjectResourceSet) resource.getResourceSet()).getSynchronizer();
	IFile aFile = WorkbenchResourceHelper.getFile(resource);
	synchronizer.preSave(aFile);
	}
	}
	}

	public void modelAboutToBeReinitialized(IStructuredModel structuredModel) {
	// TODO Auto-generated method stub

	}

	public void modelReinitialized(IStructuredModel structuredModel) {
	// TODO Auto-generated method stub

	}
	}