/** 
 * Section 5.2.4 pag. 97
 *
 * This class implements a simple message receiver behaviour:
 * it receives a message and puts it into the DataStore
**/
import jade.core.behaviours.SimpleBehaviour;
import jade.core.behaviours.DataStore;
import jade.lang.acl.ACLMessage;

public class MessageReceiver extends SimpleBehaviour {
  /** This constant should be used to get the received message from the DataStore **/
  public static final String RECV_MSG = "received-message";
  
  private boolean finished = false;

  public void action() {
    ACLMessage msg = myAgent.receive();
    if (msg!= null) {
      getDataStore().put(RECV_MSG, msg);
      finished = true;
    }
    else {
      block();
    }
  }

  public boolean done() {
    return finished;
  }
}