se0.java

人工智能中Agent开发包。多 Agent 系统是处理自治 Agent 之间知识层的协作问题

/*
* The contents of this file are subject to the BT "ZEUS" Open Source 
* Licence (L77741), Version 1.0 (the "Licence"); you may not use this file 
* except in compliance with the Licence. You may obtain a copy of the Licence
* from $ZEUS_INSTALL/licence.html or alternatively from
* http://www.labs.bt.com/projects/agents/zeus/licence.htm
* 
* Except as stated in Clause 7 of the Licence, software distributed under the
* Licence is distributed WITHOUT WARRANTY OF ANY KIND, either express or 
* implied. See the Licence for the specific language governing rights and 
* limitations under the Licence.
* 
* The Original Code is within the package zeus.*.
* The Initial Developer of the Original Code is British Telecommunications
* public limited company, whose registered office is at 81 Newgate Street, 
* London, EC1A 7AJ, England. Portions created by British Telecommunications 
* public limited company are Copyright 1996-9. All Rights Reserved.
* 
* THIS NOTICE MUST BE INCLUDED ON ANY COPY OF THIS FILE
*/

/*
 * @(#)se0.java 1.03b
 */


package zeus.actors.graphs;

import java.util.*;
import zeus.util.*;
import zeus.concepts.*;
import zeus.actors.*;
import zeus.actors.rtn.*;
import zeus.actors.rtn.util.*;


public class se0 extends Node {

   // LL 040500 1.03bB
   private String node_desc = "Start buying";
   public  final String getDesc()                 {return node_desc;};
   public  final void   setDesc(String node_desc) {this.node_desc = node_desc;};
   // LL 040500 1.03bE

   public se0() {
      super("se0");
   }
   protected int exec() {
      ResourceDb db = context.ResourceDb();

      GraphStruct gs = (GraphStruct) input;
      Goal g = (Goal)gs.goal.elementAt(0);
      Fact f = g.getFact();
   
      gs.any = new DataRec(f);
      output = input;
      return db.reserve((DataRec)gs.any,(int)context.now(),f.getNumber()) == 0
             ? OK : FAIL;
   }
   protected void reset() {
      ResourceDb db = context.ResourceDb();
      GraphStruct gs = (GraphStruct)input;
      db.free((DataRec)gs.any);
      gs.any = null;
   }
}