001    /*
002     * SonarQube, open source software quality management tool.
003     * Copyright (C) 2008-2014 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * SonarQube 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     * SonarQube 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 License
017     * along with this program; if not, write to the Free Software Foundation,
018     * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019     */
020    package org.sonar.wsclient.unmarshallers;
021    
022    import org.sonar.wsclient.services.Model;
023    import org.sonar.wsclient.services.WSUtils;
024    
025    import java.util.ArrayList;
026    import java.util.List;
027    
028    public abstract class AbstractUnmarshaller<M extends Model> implements Unmarshaller<M> {
029    
030      public final M toModel(String json) {
031        WSUtils utils = WSUtils.getINSTANCE();
032        M result = null;
033        Object array = utils.parse(json);
034        if (array instanceof List) {
035          if (utils.getArraySize(array) >= 1) {
036            Object elt = utils.getArrayElement(array, 0);
037            if (elt != null) {
038              result = parse(elt);
039            }
040          }
041        } else {
042          result = parse(array);
043        }
044        return result;
045    
046      }
047    
048      public final List<M> toModels(String json) {
049        WSUtils utils = WSUtils.getINSTANCE();
050        List<M> result = new ArrayList<M>();
051        Object array = utils.parse(json);
052        for (int i = 0; i < utils.getArraySize(array); i++) {
053          Object elt = utils.getArrayElement(array, i);
054          if (elt != null) {
055            result.add(parse(elt));
056          }
057        }
058        return result;
059      }
060    
061      protected abstract M parse(Object elt);
062    }