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/*****************************************************************************
* Copyright (c) 2013, 2014 CEA LIST 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:
* CEA LIST - Initial API and implementation
* Christian W. Damus (CEA) - bug 429242
*
*****************************************************************************/
package org.eclipse.papyrus.cdo.internal.core.importer;
import java.util.Collection;
import java.util.Set;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EAnnotation;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.URIConverter;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.papyrus.cdo.internal.core.Activator;
import org.eclipse.papyrus.cdo.internal.core.CDOUtils;
import org.eclipse.papyrus.infra.core.resource.ModelSet;
import org.eclipse.papyrus.infra.core.resource.ModelsReader;
import org.eclipse.papyrus.infra.core.resource.sasheditor.DiModel;
import org.eclipse.papyrus.infra.core.sashwindows.di.util.DiUtils;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
/**
* This is the DependencyAdapter type. Enjoy.
*/
public class DependencyAdapter extends AdapterImpl {
private final ModelsReader modelsMetadata = new ModelsReader();
private final Set<Resource> dependencies = Sets.newLinkedHashSet();
private final Set<Resource> dependents = Sets.newLinkedHashSet();
private DependencyAdapter() {
super();
}
public static DependencyAdapter getInstance(Resource resource) {
DependencyAdapter result = getExistingInstance(resource);
if (result == null) {
result = new DependencyAdapter();
resource.eAdapters().add(Math.min(1, resource.eAdapters().size()), result);
result.analyze(resource);
}
return result;
}
static DependencyAdapter getExistingInstance(Resource resource) {
DependencyAdapter result = null;
for (Object next : resource.eAdapters()) {
if (next instanceof DependencyAdapter) {
result = (DependencyAdapter) next;
break;
}
}
return result;
}
public Set<Resource> getDependencies() {
return dependencies;
}
public static Set<Resource> getDependencies(Resource resource) {
return getInstance(resource).getDependencies();
}
public Set<Resource> getDependents() {
return dependents;
}
public static Set<Resource> getDependents(Resource resource) {
return getInstance(resource).getDependents();
}
private void analyze(Resource resource) {
if (resource.getContents().isEmpty() && isDIResource(resource)) {
// similarly-named resources that are recognized by Papyrus are implicitly components
for (Resource next : getImplicitComponents(resource)) {
if (isUserModelResource(next.getURI())) {
addDependency(next);
}
}
} else {
for (TreeIterator<EObject> iter = EcoreUtil.getAllProperContents(resource, false); iter.hasNext();) {
EObject next = iter.next();
// ignore annotations, such as are used for hyperlinks
if (next instanceof EAnnotation) {
iter.prune();
} else {
for (EObject xref : next.eCrossReferences()) {
Resource xrefRes = xref.eResource();
if ((xrefRes != null) && (isUserModelResource(xrefRes.getURI()))) {
addDependency(xrefRes);
}
}
}
}
}
}
private Resource getResource() {
return (Resource) getTarget();
}
void addDependency(Resource resource) {
Resource self = getResource();
if ((resource != self) && dependencies.add(resource)) {
getInstance(resource).addDependent(self);
}
}
private void addDependent(Resource resource) {
if (resource != getResource()) {
dependents.add(resource);
}
}
boolean isUserModelResource(URI uri) {
ModelSet modelSet = getModelSet();
boolean result = (modelSet != null) ? modelSet.isUserModelResource(uri) :
// config.hasResource(uri) &&
uri.isPlatformResource() || uri.isFile() || CDOUtils.isCDOURI(uri);
return result && !uri.isArchive();
}
private ModelSet getModelSet() {
return CDOUtils.adapt(getResource().getResourceSet(), ModelSet.class);
}
private Iterable<Resource> getImplicitComponents(Resource diResource) {
// usually only two components: diagrams and semantics
Collection<Resource> result = Lists.newArrayListWithExpectedSize(2);
ResourceSet rset = diResource.getResourceSet();
URIConverter converter = rset.getURIConverter();
for (URI next : modelsMetadata.getKnownModelURIs(diResource.getURI())) {
if (!next.equals(diResource.getURI()) && converter.exists(next, null)) {
try {
result.add(rset.getResource(next, true));
} catch (Exception e) {
Activator.log.error("Uncaught exception in loading component of Papyrus model.", e); //$NON-NLS-1$
}
}
}
return result;
}
public static boolean isDIResource(Resource resource) {
boolean result = false;
if (resource.getContents().isEmpty()) {
// DI resources are typically empty; just markers
result = DiModel.DI_FILE_EXTENSION.equals(resource.getURI().fileExtension());
} else {
// Look for legacy DI content (the Sash Model that now is in a *.sash resource in the workspace metadata area)
result = DiUtils.lookupSashWindowsMngr(resource) != null;
}
return result;
}
public static Resource getDIResource(Resource resource) {
Resource result = null;
if (isDIResource(resource)) {
result = resource;
} else {
// find the the DI resource
ResourceSet rset = resource.getResourceSet();
URI uri = resource.getURI().trimFileExtension().appendFileExtension(DiModel.DI_FILE_EXTENSION);
if (rset.getURIConverter().exists(uri, null)) {
Resource di = rset.getResource(uri, true);
if ((di != null) && isDIResource(di)) {
result = di;
}
}
}
return result;
}
}
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