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package org.thinkname.ap.msn;
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import org.thinkname.ap.contact.ContactLocation;
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import org.thinkname.ap.contact.ContactManager;
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import org.thinkname.ap.main.ContactsUpdaterBehaviour;
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import jade.core.behaviours.Behaviour;
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import jade.core.behaviours.CyclicBehaviour;
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import jade.domain.DFService;
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import jade.domain.FIPAException;
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import jade.domain.FIPAAgentManagement.DFAgentDescription;
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import jade.domain.FIPAAgentManagement.Property;
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import jade.domain.FIPAAgentManagement.ServiceDescription;
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import jade.lang.acl.ACLMessage;
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import jade.lang.acl.MessageTemplate;
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import jade.util.Logger;
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import jade.wrapper.gateway.GatewayAgent;
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/**
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* Agent running all behaviours. It resides on the phone and it is responsible for DF registration/subscription and for
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* behaviour execution.
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* <p>
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* It extends GatewayAgent as requested by JADE Android add-on and is therefore able to process commands sent through
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* JadeGateway.execute().
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* Provides as an inner class the behaviour responsible for receiving messages.
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*
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*/
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public class MsnAgent extends GatewayAgent {
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/**
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* Name of service description to be registered on DF (allowing us to filter out the modifications performed by
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* our application from others)
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*/
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public static final String msnDescName = "android-msn-service";
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/**
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* Type of the description of the service
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*/
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public static final String msnDescType = "android-msn";
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/**
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* Name of the latitude property registered on the DF
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*/
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public static final String PROPERTY_NAME_LOCATION_LAT="Latitude";
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/**
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* Name of the longitude property registered on the DF
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*/
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public static final String PROPERTY_NAME_LOCATION_LONG="Longitude";
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/**
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* Name of the altitude property registered on the DF
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*/
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public static final String PROPERTY_NAME_LOCATION_ALT="Altitude";
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/**
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* Ontology used for sending message
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*/
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public static final String CHAT_ONTOLOGY= "chat_ontology";
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/**
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* Description of Msn service
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*/
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private DFAgentDescription myDescription;
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/**
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* DF Subscription message
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*/
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private ACLMessage subscriptionMessage;
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/**
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* Instance of {@link ContactsUpdaterBehaviour}
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*/
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private ContactsUpdaterBehaviour contactsUpdaterB;
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/**
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* Message receiver behaviour instance
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*/
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private MessageReceiverBehaviour messageRecvB;
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/**
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* Instance of JADE Logger for debugging
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*/
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private final Logger myLogger = Logger.getMyLogger(this.getClass().getName());
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/**
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* Overrides the Agent.setup() method, performing registration on DF, prepares the DF subscription message,
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* and adds the {@link ContactsUpdaterBehaviour}.
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*
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*/
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protected void setup() {
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super.setup();
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Thread.currentThread().getId();
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myLogger.log(Logger.INFO, "setup() called: My currentThread has this ID: " + Thread.currentThread().getId());
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myDescription = new DFAgentDescription();
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//fill a msn service description
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ServiceDescription msnServiceDescription = new ServiceDescription();
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msnServiceDescription.setName(msnDescName);
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msnServiceDescription.setType(msnDescType);
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myDescription.addServices(msnServiceDescription);
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//subscribe to DF
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subscriptionMessage = DFService.createSubscriptionMessage(this, this.getDefaultDF(), myDescription, null);
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ContactLocation curLoc = ContactManager.getInstance().getMyContactLocation();
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Property p = new Property(PROPERTY_NAME_LOCATION_LAT,new Double(curLoc.getLatitude()));
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msnServiceDescription.addProperties(p);
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p = new Property(PROPERTY_NAME_LOCATION_LONG,new Double(curLoc.getLongitude()));
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msnServiceDescription.addProperties(p);
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p= new Property(PROPERTY_NAME_LOCATION_ALT,new Double(curLoc.getAltitude()));
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msnServiceDescription.addProperties(p);
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myDescription.setName(this.getAID());
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try {
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myLogger.log(Logger.INFO, "Registering to DF!");
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DFService.register(this, myDescription);
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} catch (FIPAException e) {
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e.printStackTrace();
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}
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//added behaviour to dispatch chat messages
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messageRecvB = new MessageReceiverBehaviour();
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addBehaviour(messageRecvB);
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String[] args = (String[])getArguments();
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myLogger.log(Logger.INFO, "UPDATE TIME: " + args[0]);
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contactsUpdaterB = new ContactsUpdaterBehaviour(Long.parseLong(args[0]), curLoc);
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addBehaviour(contactsUpdaterB);
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}
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/**
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* Gets the DF subscription message.
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*
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* @return the DF subscription message
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*/
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public ACLMessage getSubscriptionMessage(){
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return subscriptionMessage;
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}
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/**
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* Gets the agent description.
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*
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* @return the agent description
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*/
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public DFAgentDescription getAgentDescription(){
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return myDescription;
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}
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/**
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* Overrides agent takeDown() method
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*/
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protected void takeDown() {
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myLogger.log(Logger.INFO, "Doing agent takeDown() ");
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}
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/**
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* Overrides GatewayAgent.processCommand(). Receives a command from JadeGateway.execute()
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* The behaviour for sending a message in particular is received in this way
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*
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* @param command a generic command that this agent shall execute.
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*/
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protected void processCommand(final Object command) {
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if (command instanceof Behaviour){
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addBehaviour( (Behaviour) command);
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}
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releaseCommand(command);
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}
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/**
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* Defines the behaviour for receiving chat messages.
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* Each time a message is received, a UI feedback is required (adding message to message window or adding a notification).
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* The {@link CyclicBehaviour} continuously executes its action method and does something as soon as a message arrives.
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*/
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private class MessageReceiverBehaviour extends CyclicBehaviour{
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/**
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* Overrides the Behaviour.action() method and receives messages.
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* After a message is received the following operations take place:
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* <ul>
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* <li> If the message is related to a new conversation (it is the first message received) a new session is created, otherwise the session is retrieved
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* <li> The message is added to the conversation
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* <li> an event for a new message is sent to update the GUI in th appropriate way
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* </ul>
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*/
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public void action() {
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try {
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MessageTemplate mt = MessageTemplate.MatchOntology(CHAT_ONTOLOGY);
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ACLMessage msg = myAgent.receive(mt);
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//If a message is received
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if(msg != null){
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myLogger.log(Logger.FINE, msg.toString());
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MsnSessionManager sessionManager = MsnSessionManager.getInstance();
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//retrieve the session id
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String sessionId = msg.getConversationId();
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myLogger.log(Logger.FINE, "Received Message... session ID is " + sessionId);
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String senderPhoneNum = msg.getSender().getLocalName();
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//Create a session Message from the received ACLMessage
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MsnSessionMessage sessionMessage = new MsnSessionMessage(msg);
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//Check if we can retrieve a session. If so we should have got a copy
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MsnSession currentSession = MsnSessionManager.getInstance().retrieveSession(sessionId);
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//If we have a new session
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if (currentSession == null) {
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//Create a new session with the specified ID
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sessionManager.addMsnSession(sessionId, msg.getAllReceiver(), senderPhoneNum);
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}
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//prepare an "IncomingMessage"
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MsnEvent event = MsnEventMgr.getInstance().createEvent(MsnEvent.INCOMING_MESSAGE_EVENT);
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event.addParam(MsnEvent.INCOMING_MESSAGE_PARAM_SESSIONID, sessionId);
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event.addParam(MsnEvent.INCOMING_MESSAGE_PARAM_MSG, sessionMessage);
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//Add message to session
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sessionManager.addMessageToSession(sessionId, sessionMessage);
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MsnEventMgr.getInstance().fireEvent(event);
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} else{
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block();
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}
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}catch(Throwable t) {
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myLogger.log(Logger.SEVERE,"*** Uncaught Exception for agent " + myAgent.getLocalName() + " ***",t);
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}
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}
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}
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}
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@ -0,0 +1,123 @@
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package org.thinkname.ap.msn;
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import jade.util.Logger;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* This is an event. An event is basically a container object that carries
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* arbitrary data and has an unique name.
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* It is filled by the entity that fires the event.
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*
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*
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*/
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public class MsnEvent {
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private Logger myLogger = Logger.getMyLogger(MsnEvent.class.getName());
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/**
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* Event that is fired each time an update should be performed
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*/
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public static final String TICK_EVENT="TICK_EVENT";
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/**
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* Event that is fired when a new message arrives
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*/
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public static final String INCOMING_MESSAGE_EVENT="INCOMING_MESSAGE_EVENT";
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/**
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* Event that is fired when a refresh of the view is needed ()
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*/
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public static final String VIEW_REFRESH_EVENT="VIEW_REFRESH_EVENT";
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/**
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* Event that is fired when a contact disconnects
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*/
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public static final String CONTACT_DISCONNECT_EVENT="CONTACT_DISCONNECT_EVENT";
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//Parameters defined for INCOMING MSG EVENT
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/**
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* Name for the incoming message parameter
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*/
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public static final String INCOMING_MESSAGE_PARAM_MSG="INCOMING_MESSAGE_PARAM_MSG";
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/**
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* Name for the session id parameter for an incoming message
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*/
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public static final String INCOMING_MESSAGE_PARAM_SESSIONID="INCOMING_MESSAGE_PARAM_SESSIONID";
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//Parameters defined for VIEW REFRESH EVENT
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/**
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* Name for the list of changes parameter at each refresh
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*/
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public static final String VIEW_REFRESH_PARAM_LISTOFCHANGES="VIEW_REFRESH_PARAM_LISTOFCHANGES";
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/**
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* Name of contacts map parameter at each refresh
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*/
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public static final String VIEW_REFRESH_CONTACTSMAP="VIEW_REFRESH_CONTACTSMAP";
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/**
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* Name of location map parameter at each refresh
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*/
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public static final String VIEW_REFRESH_PARAM_LOCATIONMAP="VIEW_REFRESH_PARAM_LOCATIONMAP";
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//Parameters defined for CONTACT DISCONNECT EVENT
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/**
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* Name of parameter
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*/
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public static final String CONTACT_DISCONNECT_PARAM_CONTACTNAME="CONTACT_DISCONNECT_PARAM_CONTACTNAME";
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/**
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* Name of the event
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*/
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private String name;
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/**
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* Maps that stores event parameters
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*/
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private Map<String, Object> paramsMap;
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/**
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* Returns the name of the event
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* @return event name
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*/
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public final String getName() {
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return name;
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}
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/**
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* Builds a new event
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* @param name name of the event
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*/
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public MsnEvent(String name){
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this.name = name;
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}
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/**
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* Adds a parameter to the event using the given name
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*
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* @param name name of the parameter
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* @param value value to be added
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*/
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public void addParam(String name, Object value){
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if (paramsMap == null){
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paramsMap = new HashMap<String, Object>();
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}
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paramsMap.put(name, value);
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myLogger.log(Logger.FINE,"putting in event map parameter " + name +" having value "+ value.toString() );
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}
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/**
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* Retrieves a parameter from an event
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*
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* @param name of the parameter to retrieve
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* @return value of the parameter
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*/
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public Object getParam(String name){
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return paramsMap.get(name);
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}
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}
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Loading…
Reference in New Issue