| /******************************************************************************* |
| * Copyright (c) 2012, 2013 Obeo. |
| * 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: |
| * Obeo - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.emf.compare.postprocessor; |
| |
| import com.google.common.base.Function; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Ordering; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.regex.Pattern; |
| |
| import org.eclipse.emf.compare.postprocessor.IPostProcessor.Descriptor; |
| import org.eclipse.emf.compare.scope.IComparisonScope; |
| |
| /** |
| * This will contain all of the EMF Compare extensions. |
| * |
| * @param <K> |
| * the type of the key of this registry |
| * @author <a href="mailto:cedric.notot@obeo.fr">Cedric Notot</a> |
| */ |
| public class PostProcessorDescriptorRegistryImpl<K> implements IPostProcessor.Descriptor.Registry<K> { |
| |
| /** |
| * Function ordering descriptors by their ranking. |
| */ |
| private static Function<IPostProcessor.Descriptor, Integer> ordinal = new Function<IPostProcessor.Descriptor, Integer>() { |
| public Integer apply(IPostProcessor.Descriptor from) { |
| return Integer.valueOf(from.getOrdinal()); |
| } |
| }; |
| |
| /** List of all the post processors contributed through "org.eclipse.emf.compare.postProcessor". */ |
| private final Map<K, IPostProcessor.Descriptor> postProcessorFactories; |
| |
| /** |
| * Creates a new extension registry. |
| */ |
| public PostProcessorDescriptorRegistryImpl() { |
| postProcessorFactories = new ConcurrentHashMap<K, IPostProcessor.Descriptor>(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @see org.eclipse.emf.compare.extension.Registry#clearRegistry() |
| */ |
| public void clear() { |
| postProcessorFactories.clear(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @see org.eclipse.emf.compare.postprocessor.IPostProcessor.Descriptor.Registry#put(java.lang.Object, |
| * org.eclipse.emf.compare.postprocessor.IPostProcessor.Descriptor) |
| */ |
| public Descriptor put(K key, Descriptor postProcessor) { |
| return postProcessorFactories.put(key, postProcessor); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @see org.eclipse.emf.compare.postprocessor.IPostProcessor.Descriptor.Registry#getDescriptors() |
| */ |
| public List<Descriptor> getDescriptors() { |
| return Ordering.natural().onResultOf(ordinal).immutableSortedCopy(postProcessorFactories.values()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @see org.eclipse.emf.compare.postprocessor.IPostProcessor.Descriptor.Registry#remove(java.lang.Object) |
| */ |
| public Descriptor remove(K key) { |
| return postProcessorFactories.remove(key); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @see org.eclipse.emf.compare.postprocessor.IPostProcessor.Descriptor.Registry#getPostProcessors(org.eclipse.emf.compare.scope.IComparisonScope) |
| */ |
| public List<IPostProcessor> getPostProcessors(IComparisonScope scope) { |
| final ImmutableList.Builder<IPostProcessor> processors = ImmutableList.builder(); |
| for (IPostProcessor.Descriptor factory : getDescriptors()) { |
| Pattern nsURIPattern = factory.getNsURI(); |
| if (nsURIPattern != null) { |
| for (String nsURI : scope.getNsURIs()) { |
| if (nsURIPattern.matcher(nsURI).matches()) { |
| processors.add(factory.getPostProcessor()); |
| break; |
| } |
| } |
| } |
| // Should probably use two loops here to prioritize NsURI matching |
| Pattern resourceURIPattern = factory.getResourceURI(); |
| if (resourceURIPattern != null) { |
| for (String resourceURI : scope.getResourceURIs()) { |
| if (resourceURIPattern.matcher(resourceURI).matches()) { |
| processors.add(factory.getPostProcessor()); |
| break; |
| } |
| } |
| } |
| } |
| return processors.build(); |
| } |
| } |