/* ===============================================================================
*
* Part of the InfoGlue Content Management Platform (www.infoglue.org)
*
* ===============================================================================
*
* Copyright (C)
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2, as published by the
* Free Software Foundation. See the file LICENSE.html for more information.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY, including the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc. / 59 Temple
* Place, Suite 330 / Boston, MA 02111-1307 / USA.
*
* ===============================================================================
*/
package org.infoglue.deliver.taglib.common;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import org.apache.log4j.Logger;
import org.infoglue.deliver.taglib.TemplateControllerTag;
import com.sun.syndication.feed.synd.SyndCategory;
import com.sun.syndication.feed.synd.SyndContent;
import com.sun.syndication.feed.synd.SyndContentImpl;
import com.sun.syndication.feed.synd.SyndEntry;
import com.sun.syndication.feed.synd.SyndEntryImpl;
/**
* This tag will generate a SyndEntry item to be used in a syndFeed.
*/
public class RSSFeedEntryTag extends TemplateControllerTag
{
private final static Logger logger = Logger.getLogger(RSSFeedEntryTag.class.getName());
/**
* The universal version identifier.
*/
private static final long serialVersionUID = 8603406098980150888L;
private String title = null;
private String link = null;
private Date publishedDate = null;
private String description = null;
private List<SyndCategory> categories = new ArrayList();
private List<SyndContent> contents = new ArrayList<SyndContent>();
private String descriptionContentType = "text/html";
private boolean correctDoubleAmpEncoding = true;
/**
* Default constructor.
*/
public RSSFeedEntryTag()
{
super();
}
/**
* Initializes the parameters to make it accessible for the children tags (if any).
*
* @return indication of whether to evaluate the body or not.
* @throws JspException if an error occurred while processing this tag.
*/
public int doStartTag() throws JspException
{
return EVAL_BODY_INCLUDE;
}
/**
* Process the end tag. Sets a cookie.
*
* @return indication of whether to continue evaluating the JSP page.
* @throws JspException if an error occurred while processing this tag.
*/
public int doEndTag() throws JspException
{
try
{
if(correctDoubleAmpEncoding)
link = link.replaceAll("&", "&");
SyndEntry entry = new SyndEntryImpl();
entry.setTitle(title);
entry.setLink(link);
entry.setPublishedDate(publishedDate);
SyndContent syndContent = new SyndContentImpl();
syndContent.setType(descriptionContentType);
syndContent.setValue(description);
entry.setDescription(syndContent);
entry.setCategories(categories);
entry.setContents(contents);
addEntry(entry);
}
catch(Exception e)
{
logger.error("An error occurred when generating RSS-feed:" + e.getMessage(), e);
}
return EVAL_PAGE;
}
/**
* Adds the parameter to the ancestor tag.
*
* @throws JspException if the ancestor tag isn't a url tag.
*/
protected void addEntry(SyndEntry entry) throws JspException
{
final RSSFeedTag parent = (RSSFeedTag) findAncestorWithClass(this, RSSFeedTag.class);
if(parent == null)
{
throw new JspTagException("RSSFeedEntryTag must have a RSSFeedTag ancestor.");
}
((RSSFeedTag) parent).addFeedEntry(entry);
}
public void setDescription(String description) throws JspException
{
this.description = evaluateString("RssFeedEntry", "description", description);
}
public void setLink(String link) throws JspException
{
this.link = evaluateString("RssFeedEntry", "link", link);
}
public void setCorrectDoubleAmpEncoding(boolean correctDoubleAmpEncoding) throws JspException
{
this.correctDoubleAmpEncoding = correctDoubleAmpEncoding;
}
public void setTitle(String title) throws JspException
{
this.title = evaluateString("RssFeedEntry", "title", title);
}
public void setDescriptionContentType(String descriptionContentType) throws JspException
{
this.descriptionContentType = evaluateString("RssFeedEntry", "descriptionContentType", descriptionContentType);
}
public void setPublishedDate(String publishedDate) throws JspException
{
this.publishedDate = (Date)evaluate("RssFeedEntry", "publishedDate", publishedDate, Date.class);
}
public void addEntryCategory(SyndCategory category)
{
this.categories.add(category);
}
public void addEntryContent(SyndContent content)
{
this.contents.add(content);
}
}