001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.repository.registry;
016    
017    import com.liferay.portal.kernel.exception.PortalException;
018    import com.liferay.portal.kernel.repository.event.RepositoryEventListener;
019    import com.liferay.portal.kernel.repository.event.RepositoryEventTrigger;
020    import com.liferay.portal.kernel.repository.event.RepositoryEventType;
021    import com.liferay.portal.kernel.repository.registry.RepositoryEventRegistry;
022    import com.liferay.portal.kernel.util.Tuple;
023    
024    import java.util.ArrayList;
025    import java.util.Collection;
026    import java.util.HashMap;
027    import java.util.Map;
028    
029    /**
030     * @author Adolfo P??rez
031     */
032    public class DefaultRepositoryEventRegistry
033            implements RepositoryEventRegistry, RepositoryEventTrigger {
034    
035            public DefaultRepositoryEventRegistry(
036                    RepositoryEventTrigger parentRepositoryEventTrigger) {
037    
038                    _parentRepositoryEventTrigger = parentRepositoryEventTrigger;
039            }
040    
041            @Override
042            public <S extends RepositoryEventType, T>
043                    void registerRepositoryEventListener(
044                            Class<S> repositoryEventTypeClass, Class<T> modelClass,
045                            RepositoryEventListener<S, T> repositoryEventListener) {
046    
047                    if (repositoryEventListener == null) {
048                            throw new NullPointerException("Repository event listener is null");
049                    }
050    
051                    Tuple key = new Tuple(repositoryEventTypeClass, modelClass);
052    
053                    Collection<RepositoryEventListener<?, ?>> repositoryEventListeners =
054                            _repositoryEventListeners.get(key);
055    
056                    if (repositoryEventListeners == null) {
057                            repositoryEventListeners = new ArrayList<>();
058    
059                            _repositoryEventListeners.put(key, repositoryEventListeners);
060                    }
061    
062                    repositoryEventListeners.add(repositoryEventListener);
063            }
064    
065            @Override
066            public <S extends RepositoryEventType, T> void trigger(
067                            Class<S> repositoryEventTypeClass, Class<T> modelClass, T model)
068                    throws PortalException {
069    
070                    if (_parentRepositoryEventTrigger != null) {
071                            _parentRepositoryEventTrigger.trigger(
072                                    repositoryEventTypeClass, modelClass, model);
073                    }
074    
075                    Tuple key = new Tuple(repositoryEventTypeClass, modelClass);
076    
077                    @SuppressWarnings("rawtypes")
078                    Collection<RepositoryEventListener<S, T>> repositoryEventListeners =
079                            (Collection)_repositoryEventListeners.get(key);
080    
081                    if (repositoryEventListeners != null) {
082                            for (RepositoryEventListener<S, T> repositoryEventListener :
083                                            repositoryEventListeners) {
084    
085                                    repositoryEventListener.execute(model);
086                            }
087                    }
088            }
089    
090            private final RepositoryEventTrigger _parentRepositoryEventTrigger;
091            private final Map<Tuple, Collection<RepositoryEventListener<?, ?>>>
092                    _repositoryEventListeners = new HashMap<>();
093    
094    }