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.unmarshallers;
021    
022    import java.util.Map;
023    
024    public final class JsonUtils {
025    
026      private JsonUtils() {
027        // only static methods
028      }
029    
030      public static String getString(Map obj, String field) {
031        Object value = obj.get(field);
032        if (value != null) {
033          return (String) value;
034        }
035        return null;
036      }
037    
038      public static Integer getInteger(Map obj, String field) {
039        Object value = obj.get(field);
040        if (value != null) {
041          return ((Long) value).intValue();
042        }
043        return null;
044      }
045    
046      public static Long getLong(Map obj, String field) {
047        Object value = obj.get(field);
048        if (value != null) {
049          return (Long) value;
050        }
051        return null;
052      }
053    
054      public static Double getDouble(Map obj, String field) {
055        Object value = obj.get(field);
056        if (value != null) {
057          return (Double) value;
058        }
059        return null;
060      }
061    }