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/*******************************************************************************
* Copyright (c) 2005, 2007 committers of openArchitectureWare 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:
* committers of openArchitectureWare - initial API and implementation
*******************************************************************************/
package org.eclipse.xtend.typesystem.emf.ui;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceVisitor;
import org.eclipse.core.resources.IStorage;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EcorePackage;
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.EcoreUtil;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.internal.core.ExternalPackageFragmentRoot;
import org.eclipse.jdt.internal.core.JarPackageFragmentRoot;
import org.eclipse.xtend.shared.ui.Activator;
import org.eclipse.xtend.shared.ui.core.internal.JDTUtil;
import org.eclipse.xtend.shared.ui.core.internal.ResourceID;
import org.eclipse.xtend.typesystem.emf.ui.internal.EmfToolsLog;
/**
* Analyzes a project's classpath for ecore metamodels. We need to take care of
* Ecore files
* <ul>
* <li>directly contained in the classpath</li>
* <li>in JARs within the classpath</li>
* <li>in the classpath of projects referenced by this project (recursively)</li>
* <li>in plugins referenced by the project, either within the target platform
* or as referenced plugin projects (recursively)</li>
* </ul>
* <p>
* Reading Ecore files occurs in background Jobs. Each Job uses its own
* ResourceSet. This avoids concurrency issues.
* </p>
*/
final class ProjectAnalyzer extends Job {
private IJavaProject project;
private ResourceSet rs;
private Map<IStorage, Resource> mapping;
private Map<String, EPackage> packages;
public ProjectAnalyzer(IJavaProject project) {
super("Analyzing accessible EMF metamodels for project " + project.getProject().getProject().getName());
this.project = project;
}
@Override
protected IStatus run(IProgressMonitor monitor) {
if (EmfToolsPlugin.trace)
System.out.println("Analyzing EMF metamodels for project " + project.getProject().getProject().getName());
// load models
rs = new ResourceSetImpl();
mapping = new HashMap<IStorage, Resource>();
packages = new HashMap<String, EPackage>();
loadMetamodelsForProject(project, rs, monitor);
// always add ecore
packages.put(EcorePackage.eNS_URI, EcorePackage.eINSTANCE);
// done. now trigger build for the project.
// only do this if it is an oaw project
// do not build referencing projects. the EmfToolsPlugin will take care
// of this
if (Activator.getExtXptModelManager().findProject(project.getProject()) != null) {
new BuildJob(project.getProject()).schedule();
}
return Status.OK_STATUS;
}
@SuppressWarnings("restriction")
private void loadMetamodelsForProject(IJavaProject javaProject, final ResourceSet rs, IProgressMonitor monitor) {
try {
final String ext = "ecore";
for (IPackageFragmentRoot root : javaProject.getPackageFragmentRoots()) {
if (!root.isArchive()) {
IResource rootResource = null;
if (root instanceof ExternalPackageFragmentRoot) {
rootResource = ((ExternalPackageFragmentRoot) root).resource();
}
else {
rootResource = root.getUnderlyingResource();
}
if (rootResource != null) {
try {
rootResource.accept(new IResourceVisitor() {
public boolean visit(IResource resource) throws CoreException {
if (resource instanceof IFile && ext.equals(((IFile) resource).getFileExtension())) {
loadModelFromStorage(rs, (IFile) resource);
}
return true;
}
});
}
catch (CoreException e) {
EmfToolsLog.logError(e);
}
}
}
else {
// skip JRE jars
if (((JarPackageFragmentRoot) root).getPath().toString().contains("jre/lib")) {
if (EmfToolsPlugin.trace)
System.out.println("Skipping " + ((JarPackageFragmentRoot) root).getPath().toString());
continue;
}
root.open(monitor);
try {
ZipFile zip = ((JarPackageFragmentRoot) root).getJar();
Enumeration<? extends ZipEntry> entries = zip.entries();
while (entries.hasMoreElements()) {
ZipEntry entry = entries.nextElement();
String name = entry.getName();
if (name.endsWith(ext)) {
String fqn = name.substring(0, name.length() - ext.length() - 1).replaceAll("/", "::");
ResourceID resourceID = new ResourceID(fqn, ext);
IStorage findStorage = JDTUtil.loadFromJar(resourceID, root);
if (findStorage != null)
loadModelFromStorage(rs, findStorage);
}
}
}
catch (CoreException e) {
EmfToolsLog.logError(e);
}
finally {
root.close();
}
}
}
}
catch (JavaModelException e) {
EmfToolsLog.logError(e);
}
}
private void loadModelFromStorage(ResourceSet rs, IStorage storage) {
URI uri = URI.createPlatformResourceURI(storage.getFullPath().toString(), true);
if (EmfToolsPlugin.trace)
System.out.println("Loading EMF metamodel " + storage.getFullPath().toString());
final Resource r = rs.createResource(uri);
if (r.isLoaded() && !r.isModified())
return;
try {
r.load(storage.getContents(), Collections.EMPTY_MAP);
mapping.put(storage, r);
Collection<EPackage> packages = EcoreUtil.getObjectsByType(r.getContents(), EcorePackage.Literals.EPACKAGE);
for (EPackage pack : packages) {
registerPackage(storage, pack);
}
}
catch (IOException e) {
EmfToolsLog.logError(e);
}
catch (CoreException e) {
EmfToolsLog.logError(e);
}
}
private void registerPackage(IStorage storage, EPackage pack) {
// finding duplicates by nsURI is better than by name since package
// names may be used across MMs
if (this.packages.containsKey(pack.getNsURI())) {
if (EmfToolsPlugin.trace)
System.out.println("Did not register '" + pack.getName() + "' from " + storage.getFullPath()
+ " because an EPackage with the same nsURI has already been registered.");
}
else {
this.packages.put(pack.getNsURI(), pack);
}
// recurse into subpackages
for (EPackage p : pack.getESubpackages()) {
registerPackage(storage, p);
}
}
public Map<String, EPackage> getNamedEPackageMap() {
if (packages == null) {
run(new NullProgressMonitor());
}
return Collections.unmodifiableMap(packages);
}
}
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