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.issue.internal;
021    
022    import org.sonar.wsclient.issue.IssueChangeDiff;
023    import org.sonar.wsclient.unmarshallers.JsonUtils;
024    
025    import javax.annotation.CheckForNull;
026    
027    import java.util.Map;
028    
029    /**
030     * @since 4.1
031     */
032    public class DefaultIssueChangeDiff implements IssueChangeDiff {
033    
034      private final Map json;
035    
036      DefaultIssueChangeDiff(Map json) {
037        this.json = json;
038      }
039    
040      public String key() {
041        return JsonUtils.getString(json, "key");
042      }
043    
044      @CheckForNull
045      public Object newValue() {
046        return parseValue("newValue");
047    
048      }
049    
050      @CheckForNull
051      public Object oldValue() {
052        return parseValue("oldValue");
053      }
054    
055      private Object parseValue(String attribute) {
056        return JsonUtils.getString(json, attribute);
057      }
058    
059    }