/**
* Copyright (c) 2011 committers of YAKINDU 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 YAKINDU - initial API and implementation
*/
package org.yakindu.sct.generator.core.extensions;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.Platform;
import org.eclipse.emf.common.util.URI;
import org.yakindu.sct.generator.core.library.IDefaultFeatureValueProvider;
import org.yakindu.sct.model.sgen.FeatureTypeLibrary;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.inject.Guice;
import com.google.inject.Injector;
/**
*
* @author andreas muelder - Initial contribution and API
*
*/
public class LibraryExtensions {
private static final String EXTENSION_POINT_ID = "org.yakindu.sct.generator.core.featuretypes";
private static final String ATTRIBUTE_URI = "uri";
private static final String ATTRIBUTE_LIBRARY_ID = "library_id";
private static final String DEFAULT_PROVIDER = "defaultProvider";
public static final String GLOBAL_ID = "ALL";
private static List<ILibraryDescriptor> descriptors;
private static class LibraryDescriptor implements ILibraryDescriptor {
private final IConfigurationElement configElement;
LibraryDescriptor(IConfigurationElement configElement) {
this.configElement = configElement;
}
@Override
public URI getURI() {
return URI.createURI(configElement.getAttribute(ATTRIBUTE_URI));
}
@Override
public String getLibraryId() {
return configElement.getAttribute(ATTRIBUTE_LIBRARY_ID);
}
@Override
public IDefaultFeatureValueProvider createFeatureValueProvider(Injector injector) {
try {
IDefaultFeatureValueProvider provider = (IDefaultFeatureValueProvider) configElement
.createExecutableExtension(DEFAULT_PROVIDER);
injector.injectMembers(provider);
return provider;
} catch (CoreException e) {
e.printStackTrace();
}
return null;
}
@Override
public IDefaultFeatureValueProvider createFeatureValueProvider() {
return createFeatureValueProvider(Guice.createInjector());
}
}
public static List<ILibraryDescriptor> getLibraryDescriptors() {
if (descriptors == null) {
descriptors = Lists.newArrayList();
if (Platform.isRunning()) {
initFromExtensions();
}
}
return descriptors;
}
protected static void initFromExtensions() {
IConfigurationElement[] configurationElements = Platform.getExtensionRegistry()
.getConfigurationElementsFor(EXTENSION_POINT_ID);
for (IConfigurationElement iConfigurationElement : configurationElements) {
descriptors.add(new LibraryDescriptor(iConfigurationElement));
}
}
public static List<ILibraryDescriptor> getLibraryDescriptors(final List<String> libraryIds) {
Iterable<ILibraryDescriptor> libraryDescriptor = getLibraryDescriptors();
return Lists.newArrayList(Iterables.filter(libraryDescriptor, new Predicate<ILibraryDescriptor>() {
public boolean apply(ILibraryDescriptor input) {
for (String libId : libraryIds) {
if (input.getLibraryId().equals(libId)) {
return true;
}
}
return false;
}
}));
}
public static IDefaultFeatureValueProvider getDefaultFeatureValueProvider(List<String> libraryId,
FeatureTypeLibrary library) {
List<ILibraryDescriptor> libraryDescriptor = getLibraryDescriptors(libraryId);
for (ILibraryDescriptor desc : libraryDescriptor) {
IDefaultFeatureValueProvider defaultProvider = desc.createFeatureValueProvider();
if (defaultProvider != null && defaultProvider.isProviderFor(library)) {
return defaultProvider;
}
}
return null;
}
}