[rules-users] StatefulKnowledgeSession construction executes sequentially (no multithread)

[Juan Carlos Fernández]

Here you have my pooling solution. Testing this source code reaches 100% CPU
usage!! Used apache commons pooling. borrowObject() creates stateful session
and pool it. returnObject() retracts all facts.

Can we extract a conclusion with my tests? I'm going to implement pooling
solution inside my SOAP app and do performance tests (throughput).

public class KnowledgeSessionThread extends Thread {
	
	int iterations = 500;
	int numberFacts = 1000;
	private ObjectPool pool;
	
    public KnowledgeSessionThread(ObjectPool pool) throws Exception {
    	this.pool = pool;
    }
    
    public void run() {
    	try { 
	    	for( int i = 0; i < iterations; i++ ) {
	    		StatefulKnowledgeSession session =
(StatefulKnowledgeSession)pool.borrowObject();
	   			for( int j = 0; j < numberFacts; j++ ) {
	   				Message msg = new Message();
	   				msg.setMessage("Hello world");
	   				msg.setStatus(Message.HELLO);
	   				session.insert(msg);
	   			}
	   			session.fireAllRules();
	   			pool.returnObject(session);
			}
		    System.out.println("Thread finished " +
this.currentThread().getName());
    	} catch( Exception e ) {
    		e.printStackTrace();
    	}
    }
}

        @Override
	public Object makeObject() throws Exception {
		System.out.println(Thread.currentThread().getName() + " - makeObject()
called" );
		return kbase.newStatefulKnowledgeSession();
	}
	
	@Override
	public void destroyObject( Object obj ) {
		StatefulKnowledgeSession session = (StatefulKnowledgeSession)obj;
		session.dispose();
		
	}

	@Override
        public void passivateObject(Object obj) { 
		StatefulKnowledgeSession session = (StatefulKnowledgeSession)obj;
		for( FactHandle handle : session.getFactHandles() ) {
			session.retract(handle);
		}
        } 

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