unusedpagesplugin.java

来自「JSP 的一个wiki 系统」· Java 代码 · 共 61 行

/* 
    JSPWiki - a JSP-based WikiWiki clone.

    Copyright (C) 2001-2002 Janne Jalkanen ([e-mail])

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation; either version 2.1 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser 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 com.ecyrd.jspwiki.plugin;

import org.apache.log4j.Logger;
import com.ecyrd.jspwiki.*;
import java.util.*;

/**
 * Plugin for displaying pages that are not linked to in other pages.
 * Uses the ReferenceManager.
 * <p>
 * Parameters: none. <BR>
 * From AbstractReferralPlugin:<BR>
 * separator: How to separate generated links; default is a wikitext line break,
 *            producing a vertical list.<BR>
 * maxwidth: maximum width, in chars, of generated links.
 *
 *  @author Janne Jalkanen
 */
public class UnusedPagesPlugin
    extends AbstractReferralPlugin
{
    private static Logger log = Logger.getLogger( UnusedPagesPlugin.class );

    public String execute( WikiContext context, Map params )
        throws PluginException
    {
        ReferenceManager refmgr = context.getEngine().getReferenceManager();
        Collection links = refmgr.findUnreferenced();

        super.initialize( context, params );

        TreeSet sortedSet = new TreeSet();

        sortedSet.addAll( links );

        String wikitext = wikitizeCollection( sortedSet, m_separator, ALL_ITEMS );
        
        return makeHTML( context, wikitext );
    }

}