001/*
002 * Sonar, open source software quality management tool.
003 * Copyright (C) 2008-2012 SonarSource
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 */
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  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}