001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2009 SonarSource SA
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.wsclient.unmarshallers;
021    
022    import org.json.simple.JSONArray;
023    import org.json.simple.JSONObject;
024    import org.json.simple.JSONValue;
025    import org.sonar.wsclient.services.Model;
026    
027    import java.util.ArrayList;
028    import java.util.List;
029    
030    public abstract class AbstractUnmarshaller<MODEL extends Model> implements Unmarshaller<MODEL> {
031    
032      public final MODEL toModel(String json) {
033        MODEL  result = null;
034        JSONArray array = (JSONArray) JSONValue.parse(json);
035        if (array.size() >= 1) {
036          JSONObject elt = (JSONObject) array.get(0);
037          if (elt != null) {
038            result = parse(elt);
039          }
040        }
041        return result;
042    
043      }
044    
045      public final List<MODEL> toModels(String json) {
046        List<MODEL> result = new ArrayList<MODEL>();
047        JSONArray array = (JSONArray) JSONValue.parse(json);
048        for (Object anArray : array) {
049          JSONObject elt = (JSONObject) anArray;
050          if (elt != null) {
051            result.add(parse(elt));
052          }
053        }
054        return result;
055      }
056    
057      protected abstract MODEL parse(JSONObject elt);
058    }