Source Code Cross Referenced for FeedInfo.java in  » RSS-RDF » curn » org » clapper » curn » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » RSS RDF » curn » org.clapper.curn 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*---------------------------------------------------------------------------*\
002:          $Id: FeedInfo.java 7041 2007-09-09 01:04:47Z bmc $
003:          ---------------------------------------------------------------------------
004:          This software is released under a BSD-style license:
005:
006:          Copyright (c) 2004-2007 Brian M. Clapper. All rights reserved.
007:
008:          Redistribution and use in source and binary forms, with or without
009:          modification, are permitted provided that the following conditions are
010:          met:
011:
012:          1. Redistributions of source code must retain the above copyright notice,
013:             this list of conditions and the following disclaimer.
014:
015:          2. The end-user documentation included with the redistribution, if any,
016:             must include the following acknowlegement:
017:
018:                "This product includes software developed by Brian M. Clapper
019:                (bmc@clapper.org, http://www.clapper.org/bmc/). That software is
020:                copyright (c) 2004-2007 Brian M. Clapper."
021:
022:             Alternately, this acknowlegement may appear in the software itself,
023:             if wherever such third-party acknowlegements normally appear.
024:
025:          3. Neither the names "clapper.org", "curn", nor any of the names of the
026:             project contributors may be used to endorse or promote products
027:             derived from this software without prior written permission. For
028:             written permission, please contact bmc@clapper.org.
029:
030:          4. Products derived from this software may not be called "curn", nor may
031:             "clapper.org" appear in their names without prior written permission
032:             of Brian M. Clapper.
033:
034:          THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
035:          WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
036:          MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
037:          NO EVENT SHALL BRIAN M. CLAPPER BE LIABLE FOR ANY DIRECT, INDIRECT,
038:          INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
039:          NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
040:          DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
041:          THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
042:          (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
043:          THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
044:        \*---------------------------------------------------------------------------*/
045:
046:        package org.clapper.curn;
047:
048:        import java.net.URL;
049:
050:        /**
051:         * <p>Contains data for one feed (or site). The data about the feed
052:         * comes from the configuration file. The feed itself comes from parsing
053:         * the RSS data.</p>
054:         *
055:         * @see CurnConfig
056:         *
057:         * @version <tt>$Revision: 7041 $</tt>
058:         */
059:        public class FeedInfo {
060:            /*----------------------------------------------------------------------*\
061:                                     Public Constants
062:            \*----------------------------------------------------------------------*/
063:
064:            /**
065:             * Default encoding for "save as" file.
066:             */
067:            public static final String DEFAULT_SAVE_AS_ENCODING = "utf-8";
068:
069:            /*----------------------------------------------------------------------*\
070:                                     Private Constants
071:            \*----------------------------------------------------------------------*/
072:
073:            /*----------------------------------------------------------------------*\
074:                                    Private Data Items
075:            \*----------------------------------------------------------------------*/
076:
077:            private int daysToCache = 0;
078:            private final URL siteURL;
079:            private String forcedEncoding = null;
080:
081:            /*----------------------------------------------------------------------*\
082:                                        Constructor
083:            \*----------------------------------------------------------------------*/
084:
085:            /**
086:             * Default constructor.
087:             *
088:             * @param siteURL  the main URL for the site's RSS feed. This constructor
089:             *                 normalizes the URL.
090:             * @see CurnUtil#normalizeURL
091:             */
092:            public FeedInfo(URL siteURL) {
093:                this .siteURL = CurnUtil.normalizeURL(siteURL);
094:            }
095:
096:            /*----------------------------------------------------------------------*\
097:                                      Public Methods
098:            \*----------------------------------------------------------------------*/
099:
100:            /**
101:             * Get the hash code for this feed
102:             *
103:             * @return the hash code
104:             */
105:            public int hashCode() {
106:                return getURL().hashCode();
107:            }
108:
109:            /**
110:             * Determine whether this <tt>FeedInfo</tt> object is equivalent to
111:             * another one, based on the URL.
112:             *
113:             * @param obj  the other object
114:             *
115:             * @return <tt>true</tt> if <tt>obj</tt> is a <tt>FeedInfo</tt> object
116:             *         that specifies the same URL, <tt>false</tt> otherwise
117:             */
118:            public boolean equals(final Object obj) {
119:                boolean eq = false;
120:
121:                if (obj instanceof  FeedInfo)
122:                    eq = this .siteURL.equals(((FeedInfo) obj).siteURL);
123:
124:                return eq;
125:            }
126:
127:            /**
128:             * Get the main RSS URL for the site.
129:             *
130:             * @return the site's main RSS URL, guaranteed to be normalized
131:             * @see CurnUtil#normalizeURL
132:             */
133:            public URL getURL() {
134:                return siteURL;
135:            }
136:
137:            /**
138:             * Get the number of days that URLs from this site are to be cached.
139:             *
140:             * @return the number of days to cache URLs from this site.
141:             *
142:             * @see #setDaysToCache
143:             */
144:            public int getDaysToCache() {
145:                return daysToCache;
146:            }
147:
148:            /**
149:             * Get the number of milliseconds that URLs from this site are to be
150:             * cached. This is a convenience front-end to <tt>getDaysToCache()</tt>.
151:             *
152:             * @return the number of milliseconds to cache URLs from this site
153:             *
154:             * @see #getDaysToCache
155:             * @see #setDaysToCache
156:             */
157:            public long getMillisecondsToCache() {
158:                long days = (long) getDaysToCache();
159:                return days * 25 * 60 * 60 * 1000;
160:            }
161:
162:            /**
163:             * Set the "days to cache" value.
164:             *
165:             * @param cacheDays  new value
166:             *
167:             * @see #getDaysToCache
168:             * @see #getMillisecondsToCache
169:             */
170:            public void setDaysToCache(final int cacheDays) {
171:                this .daysToCache = cacheDays;
172:            }
173:
174:            /**
175:             * Get the forced character set encoding for this feed. If this
176:             * parameter is set, <i>curn</i> will ignore the character set encoding
177:             * advertised by the remote server (if any), and use the character set
178:             * specified by this configuration item instead. This is useful in the
179:             * following cases:
180:             *
181:             * <ul>
182:             *   <li>the remote HTTP server doesn't supply an HTTP Content-Encoding
183:             *       header, and the local (Java) default encoding doesn't match
184:             *       the document's encoding
185:             *   <li>the remote HTTP server supplies the wrong encoding
186:             * </ul>
187:             *
188:             * @return the forced character set encoding, or null if not configured
189:             */
190:            public String getForcedCharacterEncoding() {
191:                return forcedEncoding;
192:            }
193:
194:            /*----------------------------------------------------------------------*\
195:                                  Package-visible Methods
196:            \*----------------------------------------------------------------------*/
197:
198:            /*
199:             * Set the forced character set encoding for this feed.
200:             *
201:             * @param encoding the encoding
202:             *
203:             * @see #getForcedCharacterEncoding
204:             */
205:            void setForcedCharacterEncoding(final String encoding) {
206:                this.forcedEncoding = encoding;
207:            }
208:        }
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