Examples of org.drools.core.WorkingMemory

org.drools.core.WorkingMemory
A knowledge session for a RuleBase. While this object can be serialised out, it cannot be serialised in. This is because the RuleBase reference is transient. Please see the RuleBase interface for serializing in WorkingMemories from an InputStream.


    @Test
    public void testTimeMachine() {
        SessionConfiguration conf = new SessionConfiguration();
        conf.setClockType( ClockType.PSEUDO_CLOCK );
        WorkingMemory wm = new KnowledgeBaseImpl("x", null).newStatefulSession(conf, null);
        
        final Calendar future = Calendar.getInstance();
        ((PseudoClockScheduler)wm.getSessionClock()).setStartupTime( future.getTimeInMillis() );
        
        final RuleImpl rule = new RuleImpl( "myrule" );
        rule.setEnabled( EnabledBoolean.ENABLED_TRUE );
        assertTrue( rule.isEffective(null, new RuleTerminalNode(), wm ) );


        
        future.setTimeInMillis( future.getTimeInMillis() + 100000000 );
        rule.setDateEffective(future);
        assertFalse( rule.isEffective(null, new RuleTerminalNode(), wm ) );


        ((PseudoClockScheduler)wm.getSessionClock()).advanceTime( 1000000000000L, TimeUnit.MILLISECONDS );
        
        assertTrue(rule.isEffective(null, new RuleTerminalNode(), wm ));
    }

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        final Package pkg = builder.getPackage();


        RuleBase ruleBase = getRuleBase();
        ruleBase.addPackage( pkg );
        ruleBase = SerializationHelper.serializeObject(ruleBase);
        final WorkingMemory workingMemory = ruleBase.newStatefulSession();


        List list;


        final List l = new ArrayList();
        final Person a = new Person( "a" );
        workingMemory.setGlobal( "a",
                                 a );
        workingMemory.setGlobal( "l",
                                 l );


        workingMemory.fireAllRules();
        list = IteratorToList.convert( workingMemory.iterateObjects( new ClassObjectFilter( a.getClass() ) ) );
        assertEquals( "a still in WM",
                      0,
                      list.size() );
        assertEquals( "Rule should not loop",
                      1,

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        final Package pkg = builder.getPackage();


        RuleBase ruleBase = getRuleBase();
        ruleBase.addPackage( pkg );
        ruleBase = SerializationHelper.serializeObject(ruleBase);
        final WorkingMemory workingMemory = ruleBase.newStatefulSession();


        // workingMemory.addEventListener(new DebugAgendaEventListener());
        // workingMemory.addEventListener(new
        // DebugWorkingMemoryEventListener());


        final List list = new ArrayList();


        final Person person = new Person( "person" );
        final Cheese cheese = new Cheese( "cheese",
                                          0 );
        workingMemory.setGlobal( "cheese",
                                 cheese );
        workingMemory.setGlobal( "person",
                                 person );
        workingMemory.setGlobal( "list",
                                 list );


        workingMemory.fireAllRules();


        // not sure about desired state of working memory.
        assertEquals( "Rules have not fired (looped) expected number of times",
                      10,
                      list.size() );

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        //BUILD RULEBASE
        final RuleBase rb = RuleBaseFactory.newRuleBase();
        rb.addPackage( pkg );


        //NEW WORKING MEMORY
        final WorkingMemory wm = rb.newStatefulSession();


        //ASSERT AND FIRE
        wm.insert( new Cheese( "stilton",
                42 ) );
        wm.insert( new Person( "michael",
                "stilton",
                42 ) );
        final List<String> list = new ArrayList<String>();
        wm.setGlobal( "list",
                list );
        wm.fireAllRules();
        assertEquals( 1,
                list.size() );
    }

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        //BUILD RULEBASE
        final RuleBase rb = RuleBaseFactory.newRuleBase();
        rb.addPackage( pkg );


        WorkingMemory wm = rb.newStatefulSession();


        //now create some test data
        Driver driver = new Driver();
        Policy policy = new Policy();


        wm.insert(driver);
        wm.insert(policy);


        wm.fireAllRules();


        System.out.println("BASE PRICE IS: " + policy.getBasePrice());
        System.out.println("DISCOUNT IS: " + policy.getDiscountPercent());


        int basePrice = policy.getBasePrice();

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        sta.close();


        // test that our rules can execute.
        final RuleBase rb = buildRuleBase(drl);


        WorkingMemory wm = rb.newStatefulSession();


        //now create some test data
        wm.insert(new Cheese("stilton",
                             42));
        wm.insert(new Person("michael",
                             "stilton",
                             42));
        final List<String> list = new ArrayList<String>();
        wm.setGlobal("list",
                     list);


        wm.fireAllRules();


        assertEquals(1, list.size());


    }

View Full Code Here

    public void testHelloWorld() throws Exception {
        // read in the source
        final Reader reader = new InputStreamReader( getClass().getResourceAsStream( "test_mvel.drl" ) );
        RuleBase ruleBase = loadRuleBase( reader );


        final WorkingMemory workingMemory = ruleBase.newStatefulSession();
        
        final List list = new ArrayList();
        workingMemory.setGlobal( "list",
                                 list );


        final List list2 = new ArrayList();
        workingMemory.setGlobal( "list2",
                                 list2 );


        Cheese c = new Cheese( "stilton",
                               10 );
        workingMemory.insert( c );
        workingMemory.fireAllRules();
        assertEquals( 2,
                      list.size() );
        assertEquals( BigInteger.valueOf( 30 ),
                      list.get( 0 ) );
        assertEquals( Integer.valueOf( 22 ),

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        RuleBase ruleBase = getRuleBase();
        ruleBase.addPackage( pkg );
        ruleBase = SerializationHelper.serializeObject( ruleBase );


        final WorkingMemory workingMemory = ruleBase.newStatefulSession();


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


        workingMemory.insert( new Person( "bob",
                                          "stilton" ) );
        workingMemory.insert( new Person( "mark",
                                          "brie" ) );


        try {
            workingMemory.fireAllRules();


            assertEquals( "should have fired twice",
                          2,
                          list.size() );

View Full Code Here

        final EvalCondition eval = (EvalCondition) builder.build( context,
                                                                  evalDescr );
        ((MVELEvalExpression) eval.getEvalExpression()).compile( (MVELDialectRuntimeData) pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectRuntimeRegistry().getDialectData( "mvel" ) );


        final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        final WorkingMemory wm = ruleBase.newStatefulSession();


        MockLeftTupleSink sink = new MockLeftTupleSink();
        final Cheese cheddar = new Cheese( "cheddar",
                                           10 );
        final InternalFactHandle f0 = (InternalFactHandle) wm.insert( cheddar );
        final LeftTupleImpl tuple = new LeftTupleImpl( f0, sink, true );
        
        Object evalContext = eval.createContext();


        assertTrue( eval.isAllowed( tuple,
                                    wm,
                                    evalContext ) );


        cheddar.setPrice( 9 );
        wm.update( f0,
                   cheddar );
        assertFalse( eval.isAllowed( tuple,
                                     wm,
                                     evalContext ) );
    }

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        str += "end\n";


        counter = 0;


        RuleBase rb = RuleBaseFactory.newRuleBase();
        WorkingMemory wm = rb.newStatefulSession();


        for ( int i = 0; i < NUM_FACTS; i++ ) {
            wm.insert( new Foo( i ) );
            wm.insert( new Bar( i ) );
        }
        PackageBuilder bld = new PackageBuilder();
        bld.addPackageFromDrl( new StringReader( str ) );
        if ( bld.hasErrors() ) {
            fail( bld.getErrors().toString() );
        }


        rb.addPackage( bld.getPackage() );
        wm.fireAllRules();
        System.out.println( counter + ":" + (counter == NUM_FACTS ? "passed" : "failed" ));
    }

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