it.tidalwave.semantic.rss.RssFeed Maven / Gradle / Ivy

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/***********************************************************************************************************************
 *
 * blueBill Core - open source birding
 * Copyright (C) 2009-2011 by Tidalwave s.a.s. (http://www.tidalwave.it)
 *
 ***********************************************************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 *
 ***********************************************************************************************************************
 *
 * WWW: http://bluebill.tidalwave.it
 * SCM: https://java.net/hg/bluebill~core-src
 *
 **********************************************************************************************************************/
package it.tidalwave.semantic.rss;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.Immutable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import it.tidalwave.util.Id;
import it.tidalwave.util.Key;
import it.tidalwave.util.Finder;
import it.tidalwave.util.NotFoundException;
import it.tidalwave.util.spi.SimpleFinderSupport;
import it.tidalwave.role.SimpleComposite;
import it.tidalwave.role.spi.DefaultSimpleComposite;
import it.tidalwave.semantic.EntityWithProperties;
import it.tidalwave.semantic.document.Document;
import org.openide.util.Lookup;
import org.openide.util.lookup.Lookups;
import org.openide.util.lookup.ProxyLookup;

/***********************************************************************************************************************
 *
 * @author  Fabrizio Giudici
 * @version $Id$
 *
 **********************************************************************************************************************/
@Immutable
public class RssFeed extends EntityWithProperties
  {
    public static final Class RssFeed = RssFeed.class; 
    
    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    private final Finder messageFinder = new SimpleFinderSupport("messages") 
      {
        @Override @Nonnull
        protected List computeResults() 
          {
            try 
              {
                return get(RssVocabulary.MESSAGES);
              }
            catch (NotFoundException e)
              {
                return Collections.emptyList();
              }
          }
      };  
        
    /*******************************************************************************************************************
     *
     * Creates a new {@code RssFeed} with a given id.
     * 
     * @param  id  the id
     *
     ******************************************************************************************************************/
    public RssFeed (final @Nonnull Id id)
      {
        super(id);
      }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    private RssFeed (final @Nonnull Id id,
                     final @Nonnull Map, Object> propertyMap,
                     final @Nonnull Object[] capabilities) 
      {
        super(id, propertyMap, capabilities);
      } 

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    @Nonnull
    public RssFeed withMessages (final @Nonnull Collection messages)
      {
        return with(RssVocabulary.MESSAGES, new ArrayList(messages));  
      }
    
    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    @Override @Nonnull
    protected RssFeed clone (final @Nonnull Id id,
                             final @Nonnull Map, Object> propertyMap,
                             final @Nonnull Object[] capabilities)
      {
        return new RssFeed(id, propertyMap, capabilities);
      }

    /*******************************************************************************************************************
     *
     * Finds the messages in the {@code RssFeed}.
     * 
     * @return  a {@link Finder} for the messages
     *
     ******************************************************************************************************************/
    @Nonnull
    public Finder findMessages()
      {
        return messageFinder;
      }
    
    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    @Override @Nonnull
    protected Lookup createLookup() 
      {
        final SimpleComposite composite = new DefaultSimpleComposite(messageFinder);
        return new ProxyLookup(Lookups.fixed(composite), super.createLookup());
      }
  }