/*******************************************************************************
* Copyright (c) 2011 Red Hat, Inc.
* All rights reserved.
* This program is 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:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.eclipse.bpmn2.modeler.core;
import java.io.IOException;
import java.util.HashMap;
import org.eclipse.bpmn2.util.Bpmn2ResourceImpl;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.Path;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
public class ModelHandlerLocator {
private static HashMap<URI, ModelHandler> map = new HashMap<URI, ModelHandler>();
private static HashMap<URI, ModelHandler> diagramMap = new HashMap<URI, ModelHandler>();
public static ModelHandler getModelHandler(Resource eResource) throws IOException {
URI uri = eResource.getURI();
String[] segments = uri.segments();
return getModelHandler(uri);
}
public static ModelHandler getModelHandler(URI path) throws IOException {
ModelHandler modelHandler = map.get(path);
if (modelHandler == null) {
return diagramMap.get(path);
}
return modelHandler;
}
public static void put(URI diagramPath, ModelHandler mh) {
diagramMap.put(diagramPath, mh);
}
public static void releaseModel(URI path) {
map.remove(path);
}
public static ModelHandler createModelHandler(URI path, final Bpmn2ResourceImpl resource) {
if (map.containsKey(path)) {
return map.get(path);
}
return createNewModelHandler(path, resource);
}
private static ModelHandler createNewModelHandler(URI path, final Bpmn2ResourceImpl resource) {
ModelHandler handler = new ModelHandler();
map.put(path, handler);
handler.resource = resource;
URI uri = resource.getURI();
try {
IWorkspace workspace = ResourcesPlugin.getWorkspace();
String platformString = uri.toPlatformString(true);
// platformString is null if file is outside of workspace
if ((platformString == null || workspace.getRoot().getFile(new Path(platformString)).exists())
&& !resource.isLoaded()) {
handler.loadResource();
}
} catch (IllegalStateException e) {
// Workspace is not initialized so we must be running tests!
if (!resource.isLoaded()) {
handler.loadResource();
}
}
handler.createDefinitionsIfMissing();
return handler;
}
}