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/*******************************************************************************
* Copyright (c) 2007 Oracle Corporation.
* 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.jst.jsf.common.metadata.internal;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.emf.ecore.util.BasicExtendedMetaData;
import org.eclipse.emf.ecore.util.ExtendedMetaData;
import org.eclipse.emf.ecore.xmi.XMLResource;
import org.eclipse.emf.ecore.xmi.impl.XMLResourceFactoryImpl;
import org.eclipse.jst.jsf.common.metadata.internal.util.MetadataResourceImpl;
import org.eclipse.jst.jsf.common.metadata.query.ITaglibDomainMetaDataModelContext;
/**
* Singelton that produces and loads standard metadata models.
* All models are loaded into the same ResourceSet
*
* see Model
*/
public class StandardModelFactory {
private static StandardModelFactory INSTANCE;
private ExtendedMetaData extendedMetaData;
private ResourceSet resourceSet;
/**
* @return singleton instance of the metadata model factory
*/
public synchronized static StandardModelFactory getInstance(){
if (INSTANCE == null){
INSTANCE = new StandardModelFactory();
INSTANCE.init();
}
return INSTANCE;
}
private void init() {
resourceSet = new ResourceSetImpl();
extendedMetaData = new BasicExtendedMetaData(resourceSet.getPackageRegistry());
// Register the appropriate resource factory to handle all file extentions.
//
resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put
(Resource.Factory.Registry.DEFAULT_EXTENSION,
new XMLResourceFactoryImpl());
//relying on the org.eclipse.emf.ecore.generated_package ext-pt to register traits
}
// private void registerTraitTypes(Registry packageRegistry) {
// for(Iterator/*<EPackage>*/ it=TraitTypeRegistry.getInstance().getEPackages().iterator();it.hasNext();){
// EPackage pkg = (EPackage)it.next();
// packageRegistry.put(pkg.getNsURI(), pkg);
// }
// }
private StandardModelFactory() {
super();
}
/**
* Factory method that probably belongs somewhere else!
* @param key
* @param strategy
* @return an empty MetaDataModel
*/
public MetaDataModel createModel(ModelKeyDescriptor key, IDomainLoadingStrategy strategy){
return new MetaDataModel(key, strategy);
}
/**
* Factory method that probably belongs somewhere else!
* @param modelContext
* @return a ModelKeyDescriptor for the context
*/
public ModelKeyDescriptor createModelKeyDescriptor(final ITaglibDomainMetaDataModelContext modelContext) {
return new ModelKeyDescriptor(modelContext.getProject(), modelContext.getDomainID(), modelContext.getURI());
}
/**
* @param inputStream
* @param provider
* @return the root of the standard model from the resource as an EList
* @throws IOException
*/
public EList loadStandardFileResource(InputStream inputStream, IMetaDataSourceModelProvider provider) throws IOException {
XMLResource res = new MetadataResourceImpl(provider);
resourceSet.getResources().add(res);
setLoadOptions(res);
res.load(inputStream, null);
EList root = res.getContents();
return root;
}
/**
* Sets default load options for the resource
* @param resource
*/
protected void setLoadOptions(XMLResource resource) {
Map options = resource.getDefaultLoadOptions();
// options.put(XMLResource.OPTION_SAVE_TYPE_INFORMATION, true);
options.put(XMLResource.OPTION_SCHEMA_LOCATION, Boolean.TRUE);
options.put(XMLResource.OPTION_EXTENDED_META_DATA, extendedMetaData);
options.put(XMLResource.OPTION_RESOURCE_HANDLER, resource);
options.put(XMLResource.OPTION_LAX_FEATURE_PROCESSING, Boolean.TRUE);
options.put(XMLResource.OPTION_RECORD_UNKNOWN_FEATURE, Boolean.TRUE);
// options.put(XMLResource.OPTION_DOM_USE_NAMESPACES_IN_SCOPE, Boolean.TRUE);
}
}
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