Re: [rules-dev] Drools Stateful Session Thread Safe

ricky.nfs wrote: > > Hi there, I am a newbie on Drools. I tried to create a multi threading > programs using drools. But in large amount of threads, the result in > stateful session is not safe anymore. Can anyone help me? > > private final static Map<Integer,Double> score = new HashMap<Integer, > Double>(); > > static > { > score.put( 0 , 0.0 ); > score.put( 1 , 0.84 ); > score.put( 2 , 1.26 ); > score.put( 3 , 1.68 ); > score.put( 4 , 1.05 ); //Else > } > > public static void main(String[] args) throws Exception{ > > Reader source = new InputStreamReader( > TestStatefulSimpe.class.getResourceAsStream( "/simple/SimpleCATRule.dslr" > ) ); > Reader dsl = new InputStreamReader( > TestStatefulSimpe.class.getResourceAsStream( "/simple/SimpleCATRule.dsl" ) > ); > PackageBuilder builder = new PackageBuilder(); > builder.addPackageFromDrl( source, dsl ); > > //get the compiled package (which is serializable) > Package pkg = builder.getPackage(); > > //add the package to a rulebase (deploy the rule package). > org.drools.RuleBase ruleBase = RuleBaseFactory.newRuleBase(); > ruleBase.addPackage( pkg ); > > final StatefulSession statefulSession = ruleBase.newStatefulSession(); > > for( int i = 0 ; i < 200000 ; i++ ) > { > final int idx = i; > Thread t = new Thread( new Runnable(){ > > @Override > public void run() { > int amount = (int) Math.round( ( Math.random()*4 ) ); > TestSimpleVO vo = new TestSimpleVO(); > vo.setDecisionMakersAmount( amount ); > FactHandle fact = statefulSession.insert( vo ); > statefulSession.fireAllRules(); > statefulSession.retract(fact); > if( score.get(amount).doubleValue() != vo.getScoreFactor() ) > System.out.println( idx + " - " + amount + " : " + > score.get(amount).doubleValue() + " - " + vo.getScoreFactor() ); > statefulSession.dispose(); > }}); > t.start(); > } > } > > And the dslr and dlr attachment : > http://www.nabble.com/file/p18564976/SimpleCATRule.dslSimpleCATRule.dsl > http://www.nabble.com/file/p18564976/SimpleCATRule.dslr > SimpleCATRule.dslr > > I really appreciate for any help or answer. > > Thanks in advance, > Ricky > -- View this message in context: http://www.nabble.com/Drools-Stateful-Session-Thread-Safe-tp18564976p1884... Sent from the drools - dev mailing list archive at Nabble.com. _______________________________________________ rules-dev mailing list rules-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev