001/*
002 * SonarQube, open source software quality management tool.
003 * Copyright (C) 2008-2013 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 */
020package org.sonar.wsclient.unmarshallers;
021
022import org.json.simple.JSONArray;
023
024import javax.annotation.CheckForNull;
025
026import java.text.ParseException;
027import java.text.SimpleDateFormat;
028import java.util.Date;
029import java.util.Map;
030
031// Godin: we will use raw types here, because typically JSONObject passed as an argument
032@SuppressWarnings("rawtypes")
033public final class JsonUtils {
034
035  private JsonUtils() {
036    // only static methods
037  }
038
039  @CheckForNull
040  public static String getString(Map obj, String field) {
041    Object value = obj.get(field);
042    if (value instanceof String || value instanceof Number) {
043      return value.toString();
044    }
045    return null;
046  }
047
048  @CheckForNull
049  public static Integer getInteger(Map obj, String field) {
050    Object value = obj.get(field);
051    if (value != null) {
052      return ((Long) value).intValue();
053    }
054    return null;
055  }
056
057  @CheckForNull
058  public static Boolean getBoolean(Map obj, String field) {
059    Object value = obj.get(field);
060    if (value != null) {
061      return (Boolean) value;
062    }
063    return null;
064  }
065
066  @CheckForNull
067  public static Long getLong(Map obj, String field) {
068    Object value = obj.get(field);
069    if (value != null) {
070      return (Long) value;
071    }
072    return null;
073  }
074
075  @CheckForNull
076  public static Double getDouble(Map obj, String field) {
077    Object value = obj.get(field);
078    if (value != null) {
079      if (value instanceof Long) {
080        return ((Long) value).doubleValue();
081      }
082      return (Double) value;
083    }
084    return null;
085  }
086
087  /**
088   * @since 2.5
089   */
090  @CheckForNull
091  public static JSONArray getArray(Map obj, String field) {
092    return (JSONArray) obj.get(field);
093  }
094
095  @CheckForNull
096  public static Date getDateTime(Map obj, String field) {
097    return parseDate(obj, field, "yyyy-MM-dd'T'HH:mm:ssZ");
098  }
099
100  @CheckForNull
101  public static Date getDate(Map obj, String field) {
102    return parseDate(obj, field, "yyyy-MM-dd");
103  }
104
105  @CheckForNull
106  private static Date parseDate(Map obj, String field, String format) {
107    String value = getString(obj, field);
108    if (value != null) {
109      try {
110        SimpleDateFormat dateFormat = new SimpleDateFormat(format);
111        return dateFormat.parse(value);
112
113      } catch (ParseException e) {
114        throw new IllegalArgumentException("Fail to parse date property '" + field + "': " + format, e);
115      }
116    }
117    return null;
118  }
119
120}