agentwriter.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
*/

/** 
Change log
-----------
Simon 22/08/00 added an exception catcher as part of work for fix #109719
Simon 24/08/00 added code that puts a -name option into the option list, and then
        sets the agents name if it is used
      */



package zeus.generator.code;

import java.util.*;
import javax.swing.JTextArea;
import java.io.*;

import zeus.concepts.*;
import zeus.util.*;
import zeus.generator.GeneratorModel;

/**
    AgentWriter is the class that is called by the generator to produce the Java code 
    which is compiled into the agents
    */
public class AgentWriter extends Writer {
  public AgentWriter(GenerationPlan genplan, GeneratorModel genmodel,
                     String directory, JTextArea textArea) {
    super(genplan,genmodel,directory,textArea);
  }


  private boolean hasTasks(AgentDescription agent)
  {
    String[] tasks = agent.getTasks();
    if (tasks.length == 0) return false;

    for(int j = 0; j < tasks.length; j++ )
    {
      AbstractTask t = genmodel.getTask(tasks[j]);
      switch( t.getType() )
      {
        case AbstractTask.PRIMITIVE:
          return true;
        case AbstractTask.SUMMARY:
          return true;
        case AbstractTask.SCRIPT:
          return true;
      }
    }
    return false;
  }

  public boolean hasRules(AgentDescription agent)
  {
    String[] tasks = agent.getTasks();
    if (tasks.length == 0) return false;

    for(int j = 0; j < tasks.length; j++ )
    {
      AbstractTask t = genmodel.getTask(tasks[j]);
      switch( t.getType() )
      {
        case AbstractTask.BEHAVIOUR:
          return true;
        case AbstractTask.SCRIPT:
          return true;
      }
    }
    return false;
  }


  public void write()
  {
      PrintWriter out;
      AgentInfo[] agentInfo = genplan.getSelectedAgents();
      if ( agentInfo.length == 0 ) return;

      textArea.append("\n*** Agent code generation started ***\n\n");
      for(int i = 0; i < agentInfo.length; i++ ) {
         AgentDescription agent = genmodel.getAgent(agentInfo[i].id);

         String name = genmodel.getAgentName(agentInfo[i].id);
         textArea.append("Generating code for agent " + name + "\n");
         try {
            out = createFile(name + ".java");
            out.println(standard_disclaimer);
            out.println("/*");
            out.println("This code was automatically generated by " +
                        "ZeusAgentGenerator version " +
                        SystemProps.getProperty("version.id"));
            out.println("                           DO NOT MODIFY!!");
            out.println("*/\n");

            out.println("import java.util.*;");
            out.println("import java.io.*;");
            out.println("import zeus.util.*;");
            out.println("import zeus.concepts.*;");
            out.println("import zeus.actors.*;");
            out.println("import zeus.agents.*;");
            out.println();

            out.println("public class " + name + " {");

            out.println("   protected static void version() {");
            out.println("      System.err.println(\"ZeusAgent - " + name +
                        " version: " + SystemProps.getProperty("version.id") +
                        "\");");
            out.println("      System.exit(0);");
            out.println("   }");
            out.println();

            out.println("   protected static void usage() {");
            out.println("      System.err.println(\"Usage: java " +
                        name + " -s <dns_file> -o <ontology_file> " +
                        "[-gui ViewerProg] [-e <ExternalProg>] " +
                        "[-r ResourceProg] [-name <AgentName>] [-debug] [-h] [-v]\");");
            out.println("      System.exit(0);");
            out.println("   }");
            out.println();

            out.println("   public static void main(String[] arg) {");
            // added by Simon 21/08/00 for #109719 (1.04)
            out.println("   try { ");
            out.println("      ZeusAgent agent;");
            out.println("      String external = null;");
            out.println("      String dns_file = null;");
            out.println("      String resource = null;");
            out.println("      String gui = null;");
            out.println("      String ontology_file = null;");
            out.println("      Vector nameservers = null;");
            out.println("      String name = new String (\"" + name + "\");"); 
            out.println("      Bindings b = new Bindings(\"" + name + "\");");
            out.println("      FileInputStream stream = null;");
            out.println("      ZeusExternal user_prog = null;");
            out.println();
            out.println();
            out.println("      for( int j = 0; j < arg.length; j++ ) {");
            out.println("         if ( arg[j].equals(\"-s\") && " +
                        " ++j < arg.length )");
            out.println("            dns_file = arg[j];");
            out.println("         else if ( arg[j].equals(\"-e\") && " +
                        " ++j < arg.length )");
            out.println("            external = arg[j];");
            out.println("         else if ( arg[j].equals(\"-r\") && " +
                        " ++j < arg.length )");
            out.println("            resource = arg[j];");
            out.println("         else if ( arg[j].equals(\"-o\") && " +
                        " ++j < arg.length )");
            out.println("            ontology_file = arg[j];");
            out.println("         else if ( arg[j].equals(\"-gui\") && " +
                        " ++j < arg.length )");
            out.println("            gui = arg[j];");
            out.println("         else if ( arg[j].equals(\"-debug\") ) {");
            out.println("            Core.debug = true;");
            out.println("            Core.setDebuggerOutputFile(\"" + name + ".log" + "\");");
            out.println("         }");
            out.println("         else if ( arg[j].equals(\"-v\") )");
            out.println("            version();");
            // added by Simon 24/08/00, frankly @ way past my bedtime
            out.println("         else if ( arg[j].equals(\"-name\")  &&" + 
                        " ++j < arg.length )"); 
            out.println("             name = name  + arg[j];"); // altered to remove '_'
            //zzzzz
            out.println("         else if ( arg[j].equals(\"-h\") )");
            out.println("            usage();");
            out.println("         else");
            out.println("            usage();");
            out.println("      }");
            out.println();
            // added by Simon 24/08/00
            out.println("       b = new Bindings(name);"); 
            out.println("      if ( ontology_file == null ) {");
            out.println("         System.err.println(\"Ontology Database " +
                        "file must be specified with -o option\");");
            out.println("         usage();");
            out.println("      }");
            out.println("      if ( dns_file == null ) {");
            out.println("         System.err.println(\"Domain nameserver " +
                        "file must be specified with -s option\");");
            out.println("         usage();");
            out.println("      }");
            out.println();

            out.println("         nameservers = ZeusParser.addressList(" +
                        "new FileInputStream(dns_file));");
            out.println("         if ( nameservers == null || " +
                        "nameservers.isEmpty() ) ");
            out.println("            throw new IOException();");
            out.println();

            out.println("         agent = new ZeusAgent(name,ontology_file,nameservers," +
                        agent.getPlannerWidth() + "," + agent.getPlannerLength() + "," +
                        hasTasks(agent) + "," + hasRules(agent) + ");" );
            out.println();
            out.println("         AgentContext context = agent.getAgentContext();");
            out.println("         OntologyDb db = context.OntologyDb();");
            out.println();

            out.println();
            out.println("/*\n         Initialising Extensions\n*/");
            out.println("         Class c;");