package org.drools.grid.internal;
import org.drools.SystemEventListener;
import org.drools.command.impl.ContextImpl;
import org.drools.command.impl.GenericCommand;
import org.drools.runtime.impl.ExecutionResultImpl;
public class GenericMessageHandlerImpl
implements
GenericMessageHandler {
private SystemEventListener systemEventListener;
private NodeData data;
public GenericMessageHandlerImpl(NodeData data,
SystemEventListener systemEventListener) {
this.systemEventListener = systemEventListener;
this.data = data;
}
/* (non-Javadoc)
* @see org.drools.vsm.GenericMessageHandler#messageReceived(org.drools.vsm.GenericIoWriter, org.drools.vsm.Message)
*/
public void messageReceived(GenericIoWriter session,
Message msg) throws Exception {
this.systemEventListener.debug( "Message receieved : " + msg );
// we always need to process a List, for genericity, but don't force a List on the payload
// List<GenericCommand> commands;
// if ( msg.getPayload() instanceof List ) {
// commands = (List<GenericCommand>) msg.getPayload();
// } else {
// commands = new ArrayList<GenericCommand>();
// commands.add( (GenericCommand) msg.getPayload() );
// }
GenericCommand command = (GenericCommand) msg.getPayload();
// Setup the evaluation context
ContextImpl localSessionContext = new ContextImpl( "session_" + msg.getSessionId(),
this.data.getContextManager(),
this.data.getTemp() );
ExecutionResultImpl localKresults = new ExecutionResultImpl();
localSessionContext.set( "kresults_" + msg.getSessionId(),
localKresults );
//for ( GenericCommand cmd : commands ) {
// evaluate the commands
Object result = command.execute( localSessionContext );
//}
session.write( new Message( msg.getSessionId(),
msg.getResponseId(),
msg.isAsync(),
result ),
null );
// if ( !msg.isAsync() && localKresults.getIdentifiers().isEmpty() ) {
// // if it's not an async invocation and their are no results, just send a simple notification message
// session.write( new Message( msg.getSessionId(),
// msg.getResponseId(),
// msg.isAsync(),
// new FinishedCommand() ), null );
// } else {
// // return the payload
// session.write( new Message( msg.getSessionId(),
// msg.getResponseId(),
// msg.isAsync(),
// localKresults ), null );
// }
}
}