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.text.ParseException;
023    import java.text.SimpleDateFormat;
024    import java.util.Date;
025    import java.util.Map;
026    
027    public final class JsonUtils {
028    
029      private JsonUtils() {
030        // only static methods
031      }
032    
033      public static String getString(Map obj, String field) {
034        Object value = obj.get(field);
035        if (value != null) {
036          return (String) value;
037        }
038        return null;
039      }
040    
041      public static Integer getInteger(Map obj, String field) {
042        Object value = obj.get(field);
043        if (value != null) {
044          return ((Long) value).intValue();
045        }
046        return null;
047      }
048    
049      public static Boolean getBoolean(Map obj, String field) {
050        Object value = obj.get(field);
051        if (value != null) {
052          return (Boolean)value;
053        }
054        return null;
055      }
056    
057      public static Long getLong(Map obj, String field) {
058        Object value = obj.get(field);
059        if (value != null) {
060          return (Long) value;
061        }
062        return null;
063      }
064    
065      public static Double getDouble(Map obj, String field) {
066        Object value = obj.get(field);
067        if (value != null) {
068          return (Double) value;
069        }
070        return null;
071      }
072    
073      public static Date getDateTime(Map obj, String field) {
074        return parseDate(obj, field, "yyyy-MM-dd'T'HH:mm:ssZ");
075      }
076    
077      public static Date getDate(Map obj, String field) {
078        return parseDate(obj, field, "yyyy-MM-dd");
079      }
080    
081      private static Date parseDate(Map obj, String field, String format) {
082        String value = getString(obj, field);
083        if (value != null) {
084          try {
085            SimpleDateFormat dateFormat = new SimpleDateFormat(format);
086            return dateFormat.parse(value);
087    
088          } catch (ParseException e) {
089            throw new RuntimeException(e);
090          }
091        }
092        return null;
093      }
094    }