org.commonreality.participant.impl.RequestableEfferentObjectManager.java Source code

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Here is the source code for org.commonreality.participant.impl.RequestableEfferentObjectManager.java

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/*
 * Created on May 11, 2007 Copyright (C) 2001-2007, Anthony Harrison
 * anh23@pitt.edu (jactr.org) This library 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 library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package org.commonreality.participant.impl;

import java.util.Collection;
import java.util.Collections;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.commonreality.identifier.IIdentifier;
import org.commonreality.object.IEfferentObject;
import org.commonreality.object.identifier.BasicSensoryIdentifier;
import org.commonreality.object.identifier.ISensoryIdentifier;
import org.commonreality.object.manager.IRequestableEfferentObjectManager;
import org.commonreality.object.manager.impl.EfferentObject;
import org.commonreality.object.manager.impl.EfferentObjectManager;
import org.commonreality.participant.IParticipant;

/**
 * @author developer
 */
public class RequestableEfferentObjectManager extends EfferentObjectManager
        implements IRequestableEfferentObjectManager {
    /**
     * logger definition
     */
    static private final Log LOGGER = LogFactory.getLog(RequestableEfferentObjectManager.class);

    private IParticipant _participant;

    private RequestableObjectManagerDelegate _delegate;

    /**
     * 
     */
    public RequestableEfferentObjectManager(IParticipant participant) {
        _participant = participant;
        _delegate = new RequestableObjectManagerDelegate(participant, 5) {

            @Override
            protected Collection<? extends IIdentifier> createTemplates(Object key) {
                return Collections.nCopies(10, new BasicSensoryIdentifier("", IIdentifier.Type.EFFERENT,
                        _participant.getIdentifier(), _participant.getIdentifier(), (IIdentifier) key));
            }

            @Override
            protected Object getKey(IIdentifier freeIdentifier) {
                if (freeIdentifier.getType() != IIdentifier.Type.EFFERENT)
                    return null;
                return ((ISensoryIdentifier) freeIdentifier).getAgent();
            }

        };
    }

    /**
     * @see org.commonreality.object.manager.IRequestableObjectManager#addFreeIdentifiers(java.util.Collection)
     */
    public void addFreeIdentifiers(Collection<IIdentifier> freeIdentifiers) {
        _delegate.addFreeIdentifiers(freeIdentifiers);
    }

    /**
     * @see org.commonreality.object.manager.IRequestableObjectManager#request(org.commonreality.identifier.IIdentifier)
     */
    public IEfferentObject request(IIdentifier agentIdentifier) {
        IIdentifier efferentId = requestIdentifier(agentIdentifier);
        if (efferentId == null)
            return null;
        return new EfferentObject(efferentId);
    }

    public IIdentifier requestIdentifier(IIdentifier agentIdentifier) {
        IIdentifier efferentId = _delegate.getFreeIdentifier(agentIdentifier);
        return efferentId;
    }

    public void prefetch(IIdentifier agentIdentifier) {
        _delegate.request(agentIdentifier);
    }
}