Examples of org.drools.runtime.rule.WorkingMemoryEntryPoint

org.drools.runtime.rule.WorkingMemoryEntryPoint
An entry-point is an abstract channel through where facts are inserted into the engine.

Drools 5 supports multiple entry-points into a single StatefulKnowledgeBase: the default, anonymous entry-point, as well as as many user declared entry points the application requires.

To get a reference to an entry point, just request the session:
```
 StatefulKnowledgeSession session = kbase.newStatelessKnowledgeSession(); ... WorkingMemoryEntryPoint entrypoint = session.getWorkingMemoryEntryPoint("my entry point"); 
```
Once a reference to an entry point is acquired, the application can insert, update and retract facts to/from that entry-point as usual:
```
 ... FactHandle factHandle = entrypoint.insert( fact ); ... entrypoint.update( factHandle, newFact ); ... entrypoint.retract( factHandle ); ... 
```

                                       org.drools.marshalling.impl.ProtobufMessages.EntryPoint _ep,
                                       ObjectStore objectStore) throws IOException,
                                                               ClassNotFoundException {
        InternalWorkingMemory wm = context.wm;


        WorkingMemoryEntryPoint entryPoint = context.wm.getEntryPoints().get( _ep.getEntryPointId() );
        // load the handles
        for ( ProtobufMessages.FactHandle _handle : _ep.getHandleList() ) {
            InternalFactHandle handle = readFactHandle( context,
                                                        entryPoint,
                                                        _handle );

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            readRightTuples( initialFactHandle,
                             context );
        }
        while ( context.readShort() == PersisterEnums.ENTRY_POINT) {
            String entryPointId = context.stream.readUTF();
            WorkingMemoryEntryPoint wmep = context.wm.getEntryPoints().get( entryPointId );
            readFactHandles( context,
                             ( (NamedEntryPoint) wmep ).getObjectStore() );
        }
        InternalFactHandle handle = context.wm.getInitialFactHandle();
        while (context.stream.readShort() == PersisterEnums.LEFT_TUPLE) {

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        // If either way retrieves a strategy, use it
        if (strategy != null) {
            object = strategy.read( context.stream );
        }


        WorkingMemoryEntryPoint entryPoint = null;
        if (context.readBoolean()) {
            String entryPointId = context.readUTF();
            if (entryPointId != null && !entryPointId.equals( "" )) {
                entryPoint = context.wm.getEntryPoints().get( entryPointId );
            }

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        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();


        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        final StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
        final WorkingMemoryEntryPoint ep = ksession.getWorkingMemoryEntryPoint( "testep" );


        List list = new ArrayList();
        ksession.setGlobal( "list",
                            list );


        ksession.insert( new Cheese( "cheddar" ) );
        ksession.fireAllRules();


        Runnable fireUntilHalt = new Runnable() {
            public void run() {
                ksession.fireUntilHalt();
            }
        };


        Thread t1 = new Thread( fireUntilHalt );
        t1.start();


        Thread.currentThread().sleep( 500 );
        ep.insert( new Person( "darth" ) );
        Thread.currentThread().sleep( 500 );
        ksession.halt();
        t1.join( 5000 );
        boolean alive = t1.isAlive();
        if ( alive ) {

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        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();


        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        final StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
        final WorkingMemoryEntryPoint ep = ksession.getWorkingMemoryEntryPoint( "testep" );


        List list = new ArrayList();
        ksession.setGlobal( "list",
                            list );


        list.add( new Person( "darth" ) );
        ep.insert( new Cheese( "cheddar" ) );


        ksession.fireAllRules();
        assertEquals( 3,
                      list.size() );
    }

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        ((SessionConfiguration) ksconf).setTimerJobFactoryManager( new TrackableTimeJobFactoryManager( ) );
        StatefulKnowledgeSession ksession = knowledgeBase.newStatefulKnowledgeSession(ksconf, null);
        
        List list = new ArrayList();
        ksession.setGlobal( "list", list );
        WorkingMemoryEntryPoint aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        aep.insert( new A() );
        
        ksession = marsallStatefulKnowledgeSession(ksession);        
        
        WorkingMemoryEntryPoint bep = ksession.getWorkingMemoryEntryPoint( "b-ep" );
        bep.insert( new B() );
        
        ksession = marsallStatefulKnowledgeSession(ksession);       
        
        WorkingMemoryEntryPoint cep = ksession.getWorkingMemoryEntryPoint( "c-ep" );
        cep.insert( new C() );


        ksession = marsallStatefulKnowledgeSession(ksession);     
        
        ksession.fireAllRules();
        
        ksession = marsallStatefulKnowledgeSession(ksession);          
        
        assertEquals( 3,
                      list.size() );
        
        aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        assertEquals( 1, aep.getFactHandles().size() );
        
        bep = ksession.getWorkingMemoryEntryPoint( "b-ep" );
        assertEquals( 1, bep.getFactHandles().size() );
        
        cep = ksession.getWorkingMemoryEntryPoint( "c-ep" );
        assertEquals( 1, cep.getFactHandles().size() );
        
        PseudoClockScheduler timeService = ( PseudoClockScheduler ) ksession.getSessionClock();        
        timeService.advanceTime( 11, TimeUnit.SECONDS );       
        
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        ksession.fireAllRules();
        
        ksession = marsallStatefulKnowledgeSession(ksession);        
        
        aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        assertEquals( 0, aep.getFactHandles().size() );
        
        bep = ksession.getWorkingMemoryEntryPoint( "b-ep" );
        assertEquals( 0, bep.getFactHandles().size() );
        
        cep = ksession.getWorkingMemoryEntryPoint( "c-ep" );
        assertEquals( 1, cep.getFactHandles().size() );
    }

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        ((SessionConfiguration) ksconf).setTimerJobFactoryManager( new TrackableTimeJobFactoryManager( ) );
        StatefulKnowledgeSession ksession = knowledgeBase.newStatefulKnowledgeSession(ksconf, null);
        
        List list = new ArrayList();
        ksession.setGlobal( "list", list );
        WorkingMemoryEntryPoint aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        aep.insert( new A() );
        
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        PseudoClockScheduler timeService = ( PseudoClockScheduler ) ksession.getSessionClock();        
        timeService.advanceTime( 3, TimeUnit.SECONDS );

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        StatefulKnowledgeSession ksession = knowledgeBase.newStatefulKnowledgeSession(ksconf, null);
        
        List list = new ArrayList();
        ksession.setGlobal( "list", list );
        
        WorkingMemoryEntryPoint aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        aep.insert( new A() );
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        aep.insert( new A() );
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        list.clear();
        ksession.fireAllRules();
        ksession = marsallStatefulKnowledgeSession(ksession);
        assertEquals( 2, ((List)list.get( 0 )).size() );
        
        PseudoClockScheduler timeService = ( PseudoClockScheduler ) ksession.getSessionClock();        
        timeService.advanceTime( 15, TimeUnit.SECONDS );          
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        aep.insert( new A() );
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        aep.insert( new A() );
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        list.clear();
        ksession.fireAllRules();
        ksession = marsallStatefulKnowledgeSession(ksession);

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        StatefulKnowledgeSession ksession = knowledgeBase.newStatefulKnowledgeSession(ksconf, null);
        
        List list = new ArrayList();
        ksession.setGlobal( "list", list );
        
        WorkingMemoryEntryPoint aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        aep.insert( new A() );
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        aep.insert( new A() );
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        list.clear();
        ksession.fireAllRules();
        ksession = marsallStatefulKnowledgeSession(ksession);
        assertEquals( 2, ((List)list.get( 0 )).size() );
        
        aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        aep.insert( new A() );
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        aep = ksession.getWorkingMemoryEntryPoint( "a-ep" );
        aep.insert( new A() );
        ksession = marsallStatefulKnowledgeSession(ksession);
        
        list.clear();
        ksession.fireAllRules();
        ksession = marsallStatefulKnowledgeSession(ksession);

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        sconf.setOption( ClockTypeOption.get( "pseudo" ) );


        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession( sconf,
                                                                               null );


        WorkingMemoryEntryPoint eventStream = ksession.getWorkingMemoryEntryPoint( "Event Stream" );


        SessionPseudoClock clock = ksession.getSessionClock();


        final List results = new ArrayList();
        ksession.setGlobal( "results",
                            results );


        EventFactHandle handle1 = (EventFactHandle) eventStream.insert( new StockTick( 1,
                                                                                       "ACME",
                                                                                       50,
                                                                                       System.currentTimeMillis(),
                                                                                       3 ) );

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org.drools.command.runtime.rule.GetObjectInEntryPointCommand

org.drools.command.runtime.rule.GetObjectsInEntryPointCommand

org.drools.command.runtime.rule.GetWorkingMemoryEntryPointCommand

org.drools.command.runtime.rule.InsertElementsCommand

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