absconcept.java

java实现的P2P多agent中间件

/**
 * ***************************************************************
 * JADE - Java Agent DEvelopment Framework is a framework to develop
 * multi-agent systems in compliance with the FIPA specifications.
 * Copyright (C) 2000 CSELT S.p.A.
 * 
 * GNU Lesser General Public License
 * 
 * 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,
 * version 2.1 of the License.
 * 
 * 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 jade.content.abs;

import jade.content.Concept;

/**
 * An abstract descriptor that can hold a concept
 * expression.
 * @author Federico Bergenti - Universita` di Parma
 */
public class AbsConcept extends AbsPrimitiveSlotsHolder implements AbsTerm, Concept {

	/**
	 * Construct an Abstract descriptor to hold a concept of
	 * the proper type (e.g. PERSON, ADDRESS...).
	 * @param typeName The name of the type of the concept held by 
	 * this abstract descriptor.
	 */
	public AbsConcept(String typeName) {
		super(typeName);
	}

	/**
	 * Sets an attribute of the concept held by this
	 * abstract descriptor.
	 * @param name The name of the attribute to be set.
	 * @param value The new value of the attribute.
	 */
	public void set(String name, AbsTerm value) {
		super.set(name, value);
	} 

	/**
	 * Gets the value of an attribute of the concept 
	 * held by this abstract descriptor.
	 * @param name The name of the attribute.
	 * @return value The value of the attribute.
	 */
	public AbsTerm getAbsTerm(String name) {
		return (AbsTerm)getAbsObject(name);
	}

	// Easy way to access the Java class representing AbsConcept.
	// Useful in MIDP where XXX.class is not available
	private static Class absConceptClass = null;
	public static Class getJavaClass() {
		if (absConceptClass == null) {
			try {
				absConceptClass = Class.forName("jade.content.abs.AbsConcept");
			}
			catch (Exception e) {
				// Should never happen
				e.printStackTrace();
			}
		}
		return absConceptClass;
	}

    public int getAbsType() {
    	return ABS_CONCEPT;
    }
}