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     */
020    package org.sonar.wsclient.unmarshallers;
021    
022    import org.json.simple.JSONArray;
023    
024    import java.text.ParseException;
025    import java.text.SimpleDateFormat;
026    import java.util.Date;
027    import java.util.Map;
028    
029    // Godin: we will use raw types here, because typically JSONObject passed as an argument
030    @SuppressWarnings("rawtypes")
031    public final class JsonUtils {
032    
033      private JsonUtils() {
034        // only static methods
035      }
036    
037      public static String getString(Map obj, String field) {
038        Object value = obj.get(field);
039        if (value instanceof String || value instanceof Number) {
040          return value.toString();
041        }
042        return null;
043      }
044    
045      public static Integer getInteger(Map obj, String field) {
046        Object value = obj.get(field);
047        if (value != null) {
048          return ((Long) value).intValue();
049        }
050        return null;
051      }
052    
053      public static Boolean getBoolean(Map obj, String field) {
054        Object value = obj.get(field);
055        if (value != null) {
056          return (Boolean) value;
057        }
058        return null;
059      }
060    
061      public static Long getLong(Map obj, String field) {
062        Object value = obj.get(field);
063        if (value != null) {
064          return (Long) value;
065        }
066        return null;
067      }
068    
069      public static Double getDouble(Map obj, String field) {
070        Object value = obj.get(field);
071        if (value != null) {
072          return (Double) value;
073        }
074        return null;
075      }
076    
077      /**
078       * @since 2.5
079       */
080      public static JSONArray getArray(Map obj, String field) {
081        return (JSONArray) obj.get(field);
082      }
083    
084      public static Date getDateTime(Map obj, String field) {
085        return parseDate(obj, field, "yyyy-MM-dd'T'HH:mm:ssZ");
086      }
087    
088      public static Date getDate(Map obj, String field) {
089        return parseDate(obj, field, "yyyy-MM-dd");
090      }
091    
092      private static Date parseDate(Map obj, String field, String format) {
093        String value = getString(obj, field);
094        if (value != null) {
095          try {
096            SimpleDateFormat dateFormat = new SimpleDateFormat(format);
097            return dateFormat.parse(value);
098    
099          } catch (ParseException e) {
100            throw new RuntimeException(e);
101          }
102        }
103        return null;
104      }
105    
106    }