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 */
020package org.sonar.wsclient.unmarshallers;
021
022import org.sonar.wsclient.services.Model;
023import org.sonar.wsclient.services.WSUtils;
024
025import java.util.ArrayList;
026import java.util.List;
027
028public abstract class AbstractUnmarshaller<M extends Model> implements Unmarshaller<M> {
029
030  @Override
031  public final M toModel(String json) {
032    WSUtils utils = WSUtils.getINSTANCE();
033    M result = null;
034    Object array = utils.parse(json);
035    if (array instanceof List) {
036      if (utils.getArraySize(array) >= 1) {
037        Object elt = utils.getArrayElement(array, 0);
038        if (elt != null) {
039          result = parse(elt);
040        }
041      }
042    } else {
043      result = parse(array);
044    }
045    return result;
046
047  }
048
049  @Override
050  public final List<M> toModels(String json) {
051    WSUtils utils = WSUtils.getINSTANCE();
052    List<M> result = new ArrayList<M>();
053    Object array = utils.parse(json);
054    for (int i = 0; i < utils.getArraySize(array); i++) {
055      Object elt = utils.getArrayElement(array, i);
056      if (elt != null) {
057        result.add(parse(elt));
058      }
059    }
060    return result;
061  }
062
063  protected abstract M parse(Object elt);
064}