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.gwt.unmarshallers;
021    
022    import com.google.gwt.core.client.JavaScriptObject;
023    import com.google.gwt.json.client.JSONArray;
024    import com.google.gwt.json.client.JSONObject;
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      public final MODEL toModel(JavaScriptObject json) {
032        JSONArray array = new JSONArray(json);
033        if (array.size() >= 1) {
034          JSONObject elt = array.get(0).isObject();
035          return parse(elt);
036        }
037        return null;
038      }
039    
040      public final List<MODEL> toModels(JavaScriptObject json) {
041        List<MODEL> result = new ArrayList<MODEL>();
042        JSONArray array = new JSONArray(json);
043        for (int i = 0; i < array.size(); i++) {
044          JSONObject elt = array.get(i).isObject();
045          if (elt != null) {
046            result.add(parse(elt));
047          }
048        }
049        return result;
050      }
051    
052      protected abstract MODEL parse(JSONObject json);
053    }