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 */
020package org.sonar.wsclient.unmarshallers;
021
022import org.json.simple.JSONArray;
023
024import javax.annotation.CheckForNull;
025import javax.annotation.Nullable;
026
027import java.text.ParseException;
028import java.text.SimpleDateFormat;
029import java.util.Date;
030import java.util.Map;
031
032// Godin: we will use raw types here, because typically JSONObject passed as an argument
033@SuppressWarnings("rawtypes")
034public final class JsonUtils {
035
036  private JsonUtils() {
037    // only static methods
038  }
039
040  @CheckForNull
041  public static String getString(Map obj, String field) {
042    Object value = obj.get(field);
043    if (value instanceof String || value instanceof Number) {
044      return value.toString();
045    }
046    return null;
047  }
048
049  @CheckForNull
050  public static Integer getInteger(Map obj, String field) {
051    Object value = obj.get(field);
052    if (value != null) {
053      return ((Long) value).intValue();
054    }
055    return null;
056  }
057
058  @CheckForNull
059  public static Boolean getBoolean(Map obj, String field) {
060    Object value = obj.get(field);
061    if (value != null) {
062      return (Boolean) value;
063    }
064    return null;
065  }
066
067  @CheckForNull
068  public static Long getLong(Map obj, String field) {
069    Object value = obj.get(field);
070    if (value != null) {
071      return (Long) value;
072    }
073    return null;
074  }
075
076  @CheckForNull
077  public static Double getDouble(Map obj, String field) {
078    Object value = obj.get(field);
079    if (value != null) {
080      if (value instanceof Long) {
081        return ((Long) value).doubleValue();
082      }
083      return (Double) value;
084    }
085    return null;
086  }
087
088  /**
089   * @since 2.5
090   */
091  @CheckForNull
092  public static JSONArray getArray(Map obj, String field) {
093    return (JSONArray) obj.get(field);
094  }
095
096  @CheckForNull
097  public static Date getDateTime(Map obj, String field) {
098    return parseDate(getString(obj, field), "yyyy-MM-dd'T'HH:mm:ssZ");
099  }
100
101  @CheckForNull
102  public static Date getDate(Map obj, String field) {
103    return parseDate(getString(obj, field));
104  }
105
106  @CheckForNull
107  public static Date parseDate(@Nullable String value) {
108    return parseDate(value, "yyyy-MM-dd");
109  }
110
111  @CheckForNull
112  private static Date parseDate(@Nullable String value, String format) {
113    if (value != null) {
114      try {
115        SimpleDateFormat dateFormat = new SimpleDateFormat(format);
116        return dateFormat.parse(value);
117
118      } catch (ParseException e) {
119        throw new IllegalArgumentException("Fail to parse date '" + value + "': " + format, e);
120      }
121    }
122    return null;
123  }
124
125}