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.Type;
025import java.lang.reflect.ParameterizedType;
026import java.util.Comparator;
027import java.util.HashMap;
028import java.util.Map;
029import java.util.SortedMap;
030import java.util.TreeMap;
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 ExternalizablePersistentMap extends AbstractExternalizablePersistentCollection {
041
042        private static final long serialVersionUID = 1L;
043        
044        public ExternalizablePersistentMap() {
045        }
046
047        public ExternalizablePersistentMap(Map<?, ?> content, boolean initialized, boolean dirty) {
048                super(null, initialized, dirty);
049                setContentFromMap(content);
050        }
051
052        public ExternalizablePersistentMap(Object[] content, boolean initialized, boolean dirty) {
053                super(content, initialized, dirty);
054        }
055        
056        public Map<?, ?> getContentAsMap(Type target) {
057                return getContentAsMap(target, null);
058        }
059                
060        @SuppressWarnings({ "unchecked", "rawtypes" })
061        public Map<?, ?> getContentAsMap(Type target, Comparator comparator) {
062                Map map = null;
063                if (content != null) {
064                        if (SortedMap.class.isAssignableFrom(TypeUtil.classOfType(target))) {
065                                if (comparator != null)
066                                        map = new TreeMap(comparator);
067                                else
068                                        map = new TreeMap();
069                        }
070                        else
071                                map = new HashMap(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 (int i = 0; i < content.length; i++) {
080                    Object[] entry = (Object[])content[i];
081                    
082                    if (typeArguments != null)
083                        map.put(converters.convert(entry[0], typeArguments[0]), converters.convert(entry[1], typeArguments[1]));
084                    else
085                        map.put(entry[0], entry[1]);
086                }
087                }
088        return map;
089        }
090        
091        public void setContentFromMap(Map<?, ?> map) {
092                if (map == null)
093                        content = null;
094                else {
095                content = new Object[map.size()];
096                int index = 0;
097                for (Map.Entry<?, ?> entry : map.entrySet())
098                    content[index++] = new Object[]{entry.getKey(), entry.getValue()};
099                }
100        }
101}