Source Code Cross Referenced for NWSInformation.java in  » Blogger-System » blojsom-3.1 » org » blojsom » plugin » weather » beans » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Blogger System » blojsom 3.1 » org.blojsom.plugin.weather.beans 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * Copyright (c) 2003-2007, David A. Czarnecki
003:         * All rights reserved.
004:         *
005:         * Redistribution and use in source and binary forms, with or without
006:         * modification, are permitted provided that the following conditions are met:
007:         *
008:         * Redistributions of source code must retain the above copyright notice, this list of conditions and the
009:         *     following disclaimer.
010:         * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
011:         *     following disclaimer in the documentation and/or other materials provided with the distribution.
012:         * Neither the name of "David A. Czarnecki" and "blojsom" nor the names of its contributors may be used to
013:         *     endorse or promote products derived from this software without specific prior written permission.
014:         * Products derived from this software may not be called "blojsom", nor may "blojsom" appear in their name,
015:         *     without prior written permission of David A. Czarnecki.
016:         *
017:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
018:         * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
019:         * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
020:         * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
021:         * EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
022:         * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
023:         * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
024:         * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
025:         * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
026:         * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
027:         * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
028:         * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
029:         * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
030:         */package org.blojsom.plugin.weather.beans;
031:
032:        import org.w3c.dom.Document;
033:        import org.w3c.dom.Node;
034:        import org.w3c.dom.NodeList;
035:        import org.w3c.dom.DOMException;
036:
037:        import java.text.MessageFormat;
038:
039:        /**
040:         * NWSInformation
041:         *
042:         * @author David Czarnecki
043:         * @author Mark Lussier
044:         * @version $Id: NWSInformation.java,v 1.2 2007/01/17 02:35:15 czarneckid Exp $
045:         * @since blojsom 3.0
046:         */
047:        public class NWSInformation implements  WeatherInformation {
048:
049:            public static final String NWS_URL_FORMAT = "http://www.nws.noaa.gov/data/current_obs/{0}.xml";
050:
051:            public static final String TAG_CREDIT = "credit";
052:            public static final String TAG_CREDIT_URL = "credit_URL";
053:            public static final String TAG_LOCATION = "location";
054:            public static final String TAG_OBSERVATION = "observation_time";
055:            public static final String TAG_WEATHER = "weather";
056:            public static final String TAG_TEMP_STRING = "temperature_string";
057:            public static final String TAG_TEMP_F = "temp_f";
058:            public static final String TAG_TEMP_C = "temp_c";
059:            public static final String TAG_HUMIDITY = "relative_humidity";
060:            public static final String TAG_WIND_STRING = "wind_string";
061:            public static final String TAG_WIND_DIRECTION = "wind_dir";
062:            public static final String TAG_WIND_DEGREES = "wind_degrees";
063:            public static final String TAG_WIND_MPH = "wind_mph";
064:            public static final String TAG_WIND_GUST_MPH = "wind_gust_mph";
065:            public static final String TAG_STATION = "station_id";
066:            public static final String TAG_VISIBILITY = "visibility_mi";
067:            public static final String TAG_HISTORY = "two_day_history_url";
068:
069:            private String _temperatureF = "-0 F";
070:            private String _temperatureC = "-0 C";
071:            private String _stationCode = "";
072:            private String _location = "a";
073:            private String _visibility = "";
074:            private String _wind = "";
075:            private String _history = "#";
076:            private Document _document;
077:
078:            /**
079:             * Public Constructor
080:             *
081:             * @param stationCode The Provider Station Id
082:             */
083:            public NWSInformation(String stationCode) {
084:                _stationCode = stationCode;
085:            }
086:
087:            /**
088:             * Parse an XML document containing weather related information
089:             *
090:             * @param document XML document with weather information
091:             */
092:            public void parseDocument(Document document) {
093:                _document = document;
094:
095:                _temperatureC = getValueOfTag(TAG_TEMP_C);
096:                _temperatureF = getValueOfTag(TAG_TEMP_F);
097:                _stationCode = getValueOfTag(TAG_STATION);
098:                _location = getValueOfTag(TAG_LOCATION);
099:                _visibility = getValueOfTag(TAG_VISIBILITY);
100:                _wind = getValueOfTag(TAG_WIND_STRING);
101:                _history = getValueOfTag(TAG_HISTORY);
102:            }
103:
104:            /**
105:             * Get Contents of a Tag in the Weather Data
106:             *
107:             * @param tag The Tag Name
108:             * @return Value of the Element as a String
109:             */
110:            private String getValueOfTag(String tag) {
111:                String result = null;
112:                try {
113:                    NodeList nodeList = _document.getElementsByTagName(tag);
114:                    if (nodeList != null) {
115:                        Node tempNode = nodeList.item(0);
116:                        Node value = tempNode.getFirstChild();
117:                        if (value != null) {
118:                            result = value.getNodeValue();
119:                        }
120:                    }
121:                } catch (DOMException e) {
122:                    result = null;
123:                }
124:
125:                return result;
126:            }
127:
128:            /**
129:             * Get the Location of the Weather Station
130:             *
131:             * @return The Weather Station name as a String
132:             */
133:            public String getLocation() {
134:                return _location;
135:            }
136:
137:            /**
138:             * Get the Station Id
139:             *
140:             * @return The Station Id as a String
141:             */
142:            public String getStationCode() {
143:                return _stationCode;
144:            }
145:
146:            /**
147:             * Get the current temperature as Farenheit
148:             *
149:             * @return A String containing the current temperature in Farenheit
150:             */
151:            public String getFahrenheit() {
152:                return _temperatureF + " F";
153:            }
154:
155:            /**
156:             * Get the current temperate as Celcius
157:             *
158:             * @return A String containing the current temperature as Celcius
159:             */
160:            public String getCelcius() {
161:                return _temperatureC + " C";
162:            }
163:
164:            /**
165:             * Get the current Visibility
166:             *
167:             * @return The current visbility as a String
168:             */
169:            public String getVisibility() {
170:                return _visibility;
171:            }
172:
173:            /**
174:             * Get the current Wind conditions
175:             *
176:             * @return The current wind conditions as a String
177:             */
178:            public String getWind() {
179:                return _wind;
180:            }
181:
182:            /**
183:             * Get the URL containing a link to weather history information
184:             *
185:             * @return URL for weather history information
186:             */
187:            public String getHistoryUrl() {
188:                return _history;
189:            }
190:
191:            /**
192:             * Gets the URL required to fetch this resource
193:             *
194:             * @return The resource location as a String
195:             */
196:            public String getProviderUrl() {
197:                return MessageFormat.format(NWS_URL_FORMAT,
198:                        new Object[] { _stationCode });
199:            }
200:
201:            /**
202:             * Get the value for a given tag from the parsed XML weather information
203:             *
204:             * @param tag Tag to retrieve
205:             * @return Value of tag or <code>null</code> if the tag is not present
206:             * @since blojsom 2.24
207:             */
208:            public String getValueForTag(String tag) {
209:                return getValueOfTag(tag);
210:            }
211:        }
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