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Java > Open Source Codes > org > blojsom > plugin > calendar > AbstractVisualCalendarPlugin


1 /**
2  * Copyright (c) 2003-2006, David A. Czarnecki
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  * Redistributions of source code must retain the above copyright notice, this list of conditions and the
9  * following disclaimer.
10  * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
11  * following disclaimer in the documentation and/or other materials provided with the distribution.
12  * Neither the name of "David A. Czarnecki" and "blojsom" nor the names of its contributors may be used to
13  * endorse or promote products derived from this software without specific prior written permission.
14  * Products derived from this software may not be called "blojsom", nor may "blojsom" appear in their name,
15  * without prior written permission of David A. Czarnecki.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
18  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
19  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
21  * EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 package org.blojsom.plugin.calendar;
32
33 import org.apache.commons.logging.Log;
34 import org.apache.commons.logging.LogFactory;
35 import org.blojsom.blog.Blog;
36 import org.blojsom.blog.Entry;
37 import org.blojsom.fetcher.FetcherException;
38 import org.blojsom.plugin.PluginException;
39 import org.blojsom.util.BlojsomUtils;
40
41 import javax.servlet.http.HttpServletRequest JavaDoc;
42 import javax.servlet.http.HttpServletResponse JavaDoc;
43 import java.util.Calendar JavaDoc;
44 import java.util.Date JavaDoc;
45 import java.util.Locale JavaDoc;
46 import java.util.Map JavaDoc;
47
48 /**
49  * AbstractVisualCalendarPlugin
50  *
51  * @author David Czarnecki
52  * @author Mark Lussier
53  * @version $Id: AbstractVisualCalendarPlugin.java,v 1.4 2006/07/07 01:37:01 czarneckid Exp $
54  * @since blojsom 3.0
55  */
56 public abstract class AbstractVisualCalendarPlugin extends AbstractCalendarPlugin {
57
58     private Log _logger = LogFactory.getLog(AbstractVisualCalendarPlugin.class);
59
60     protected BlogCalendar _blogCalendar;
61
62     /**
63      * Process the blog entries
64      *
65      * @param httpServletRequest Request
66      * @param httpServletResponse Response
67      * @param user {@link BlogUser} instance
68      * @param context Context
69      * @param entries Blog entries retrieved for the particular request
70      * @return Modified set of blog entries
71      * @throws PluginException If there is an error processing the blog entries
72      */
73     public Entry[] process(HttpServletRequest JavaDoc httpServletRequest, HttpServletResponse JavaDoc httpServletResponse, Blog blog, Map JavaDoc context, Entry[] entries) throws PluginException {
74         entries = super.process(httpServletRequest, httpServletResponse, blog, context, entries);
75
76         Locale JavaDoc locale = (Locale JavaDoc) context.get(BLOJSOM_CALENDAR_LOCALE);
77         BlogCalendar blogCalendar = (BlogCalendar) context.get(BLOJSOM_CALENDAR);
78         Calendar JavaDoc entrycalendar = Calendar.getInstance(locale);
79
80         Date JavaDoc startDate = BlojsomUtils.getFirstDateOfYearMonth(locale, blogCalendar.getCurrentYear(), blogCalendar.getCurrentMonth());
81         Date JavaDoc endDate = BlojsomUtils.getLastDateOfYearMonth(locale, blogCalendar.getCurrentYear(), blogCalendar.getCurrentMonth());
82         Date JavaDoc now = new Date JavaDoc();
83
84         if (startDate.before(now)) {
85             if (endDate.after(now)) {
86                 endDate = now;
87             }
88             
89             try {
90                 Entry[] entriesForMonth = _fetcher.findEntriesBetweenDates(blog, startDate, endDate);
91                 for (int i = 0; i < entriesForMonth.length; i++) {
92                     Entry entry = entriesForMonth[i];
93                     entrycalendar.setTime(entry.getDate());
94                     int entrymonth = entrycalendar.get(Calendar.MONTH);
95                     int entryyear = entrycalendar.get(Calendar.YEAR);
96
97                     // If the entry is is the same month and the same year, then flag that date as having a entry
98 if ((entrymonth == blogCalendar.getCurrentMonth()) && (entryyear == blogCalendar.getCurrentYear())) {
99                         blogCalendar.setEntryForDOM(entrycalendar.get(Calendar.DAY_OF_MONTH));
100                     }
101                 }
102             } catch (FetcherException e) {
103                 if (_logger.isErrorEnabled()) {
104                     _logger.error(e);
105                 }
106             }
107         }
108
109         context.put(BLOJSOM_CALENDAR, blogCalendar);
110
111         return entries;
112     }
113 }
114
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