import com.lotus.sametime.core.comparch.STSession; //导入依赖的package包/类
/**
 * @see net.sf.kraken.session.TransportSession#logIn(net.sf.kraken.type.PresenceType, String)
 */
@Override
public void logIn(PresenceType presenceType, String verboseStatus) {
    setPendingPresenceAndStatus(presenceType, verboseStatus);
    if (!isLoggedIn()) {  
        try {
            stSession = new STSession("Kraken - "+jid);
            stSession.loadSemanticComponents();
            stSession.start();
            
            listener = new SameTimeListener(this);
            
            communityService = (CommunityService) stSession.getCompApi(CommunityService.COMP_NAME);
            communityService.addLoginListener(listener);
            communityService.disableAutomaticReconnect();
            
            imService = (InstantMessagingService) stSession.getCompApi(InstantMessagingService.COMP_NAME);
            imService.addImServiceListener(listener);
            imService.registerImType(ImTypes.IM_TYPE_CHAT);
            
            blService = (BLService) stSession.getCompApi(BLService.COMP_NAME);
            blService.addBLServiceListener(listener);
            
            awarenessService = (AwarenessService) stSession.getCompApi(AwarenessService.COMP_NAME);
            awarenessService.addAwarenessServiceListener(listener);
            
            watchList = awarenessService.createWatchList();
            watchList.addStatusListener(listener);
            
            communityService.loginByPassword(
                    JiveGlobals.getProperty("plugin.gateway.sametime.connecthost", "stdemo3.dfw.ibm.com"),
                    getRegistration().getUsername(),
                    getRegistration().getPassword()
            );
        }
        catch (DuplicateObjectException e) {
            Log.error("SameTime: Tried to start up duplicate session for: "+jid);
            setFailureStatus(ConnectionFailureReason.UNKNOWN);
            sessionDisconnected("Duplicate session.");
        }
     }
}