12.5. Available Clock Implementations

JBoss BRMS Complex Event Processing comes equipped with two clock implementations:
Real-Time Clock
The real-time clock is the default implementation based on the system clock. The real-time clock uses the system clock to determine the current time for timestamps.
To explicitly configure the engine to use the real-time clock, set the session configuration parameter to realtime: 
KieSessionConfiguration config = KieServices.Factory.get().newKieSessionConfiguration()
   config.setOption( ClockTypeOption.get("realtime") );
Pseudo-Clock
The pseudo-clock is useful for testing temporal rules since it can be controlled by the application.
To explicitly configure the engine to use the pseudo-clock, set the session configuration parameter to pseudo: 
KieSessionConfiguration config = KieServices.Factory.get().newKieSessionConfiguration();
   config.setOption( ClockTypeOption.get("pseudo") );
This example shows how to control the pseudo-clock: 
KieSessionConfiguration conf = KieServices.Factory.get().newKieSessionConfiguration();
   conf.setOption( ClockTypeOption.get( "pseudo" ) );
   KieSession session = kbase.newKieSession( conf, null );

   SessionPseudoClock clock = session.getSessionClock();

   // then, while inserting facts, advance the clock as necessary:
   FactHandle handle1 = session.insert( tick1 );
   clock.advanceTime( 10, TimeUnit.SECONDS );
   FactHandle handle2 = session.insert( tick2 );
   clock.advanceTime( 30, TimeUnit.SECONDS );
   FactHandle handle3 = session.insert( tick3 );
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