001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.messaging.persistence;
023
024import java.lang.reflect.ParameterizedType;
025import java.lang.reflect.Type;
026import java.util.Comparator;
027import java.util.HashSet;
028import java.util.Set;
029import java.util.SortedSet;
030import java.util.TreeSet;
031
032import org.granite.config.GraniteConfig;
033import org.granite.context.GraniteContext;
034import org.granite.messaging.amf.io.convert.Converters;
035import org.granite.util.TypeUtil;
036
037/**
038 * @author Franck WOLFF
039 */
040public class ExternalizablePersistentSet extends AbstractExternalizablePersistentCollection {
041
042    private static final long serialVersionUID = 1L;
043
044    public ExternalizablePersistentSet() {
045    }
046    
047        public ExternalizablePersistentSet(Set<?> content, boolean initialized, boolean dirty) {
048                super(null, initialized, dirty);
049                setContentFromSet(content);
050        }
051    
052        public ExternalizablePersistentSet(Object[] content, boolean initialized, boolean dirty) {
053                super(content, initialized, dirty);
054        }
055
056        public Set<?> getContentAsSet(Type target) {
057                return getContentAsSet(target, null);
058        }
059        
060        @SuppressWarnings({ "unchecked", "rawtypes" })
061        public Set<?> getContentAsSet(Type target, Comparator comparator) {
062        Set set = null;
063        if (content != null) {
064                if (SortedSet.class.isAssignableFrom(TypeUtil.classOfType(target))) {
065                        if (comparator != null)
066                                set = new TreeSet(comparator);
067                        else
068                                set = new TreeSet();
069                }
070                else
071                        set = new HashSet(content.length);
072
073            GraniteConfig config = GraniteContext.getCurrentInstance().getGraniteConfig();
074            Converters converters = config.getConverters();
075                        Type[] typeArguments = null;
076                        if (target instanceof ParameterizedType)
077                                typeArguments = ((ParameterizedType)target).getActualTypeArguments();
078                        
079                for (Object o : content) {
080                        if (typeArguments != null)
081                                set.add(converters.convert(o, typeArguments[0]));
082                        else
083                                set.add(o);
084                }
085        }
086                return set;
087        }
088        
089        public void setContentFromSet(Set<?> set) {
090                content = (set != null ? set.toArray() : null);
091        }
092}