Package org.drools

Examples of org.drools.StatefulSession

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    public void testGetFactHandleIdentityBehavior() throws Exception {
        final RuleBaseConfiguration conf = new RuleBaseConfiguration();
        conf.setAssertBehaviour( RuleBaseConfiguration.AssertBehaviour.IDENTITY );
        final RuleBase ruleBase = RuleBaseFactory.newRuleBase( conf );

        final StatefulSession session = ruleBase.newStatefulSession();

        CheeseEqual cheese = new CheeseEqual( "stilton",
                                              10 );
        session.insert( cheese );
        FactHandle fh1 = session.getFactHandle( new Cheese( "stilton",
                                                            10 ) );
        assertNull( fh1 );
        FactHandle fh2 = session.getFactHandle( cheese );
        assertNotNull( fh2 );
    }
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        PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic1.drl" ) ) );
        Package pkg = serialisePackage( builder.getPackage() );
        ruleBase.addPackage( pkg );

        StatefulSession session = ruleBase.newStatefulSession();
        List list = new ArrayList();
        session.setGlobal( "list",
                           list );

        InternalFactHandle stilton = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                      10 ) );
        InternalFactHandle brie = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                   10 ) );
        session.fireAllRules();

        assertEquals( list.size(),
                      1 );
        assertEquals( "stilton",
                      list.get( 0 ) );

        byte[] serializedSession = serializeOut( session );
        session.dispose();

        byte[] serializedRulebase = serializeOut( ruleBase );

        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) serializeIn( serializedRulebase );

        session = ruleBase.newStatefulSession( new ByteArrayInputStream( serializedSession ) );
        list = (List) session.getGlobal( "list" );

        assertNotNull( list );
        assertEquals( list.size(),
                      1 );
        assertEquals( "stilton",
                      list.get( 0 ) );

        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic3.drl" ) ) );
        pkg = serialisePackage( builder.getPackage() );
        ruleBase.addPackage( pkg );

        InternalFactHandle stilton2 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       10 ) );
        InternalFactHandle brie2 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    10 ) );
        InternalFactHandle bob = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                  30 ) );
        session.fireAllRules();

        assertEquals( list.size(),
                      3 );
        assertEquals( bob.getObject(),
                      list.get( 1 ) );
        assertEquals( "stilton",
                      list.get( 2 ) );

        session.dispose();

    }
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        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic1_0.drl" ) ) );
        Package pkg = serialisePackage( builder.getPackage() );
        ruleBase.addPackage( pkg );

        List results = new ArrayList();
        StatefulSession session = ruleBase.newStatefulSession();
        session.setGlobal( "results",
                           results );

        InternalFactHandle stilton1 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       10 ) );
        session.insert( new Cheese( "brie",
                                    10 ) );
        InternalFactHandle bob = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                  10 ) );

        // fire rules
        session.fireAllRules();
        // check the results are correct
        assertEquals( 1,
                      results.size() );
        assertEquals( stilton1.getObject(),
                      results.get( 0 ) );

        // serialize session and rulebase out
        byte[] serializedSession = serializeOut( session );
        byte[] serializedRulebase = serializeOut( ruleBase );
        session.dispose();

        // now deserialize the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) serializeIn( serializedRulebase );
        session = ruleBase.newStatefulSession( new ByteArrayInputStream( serializedSession ) );

        // dynamically add a new package
        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic3_0.drl" ) ) );
        pkg = serialisePackage( builder.getPackage() );
        ruleBase.addPackage( pkg );

        InternalFactHandle stilton2 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       20 ) );
        session.insert( new Cheese( "brie",
                                    20 ) );
        InternalFactHandle mark = (InternalFactHandle) session.insert( new Person( "mark",
                                                                                   20 ) );
        session.fireAllRules();

        results = (List) session.getGlobal( "results" );
        assertEquals( 4,
                      results.size() );
        assertEquals( bob.getObject(),
                      results.get( 1 ) );
        assertEquals( stilton2.getObject(),
                      results.get( 2 ) );
        assertEquals( mark.getObject(),
                      results.get( 3 ) );

        serializedSession = null;
        serializedRulebase = null;

        serializedSession = serializeOut( session );
        serializedRulebase = serializeOut( ruleBase );

        // dispose session
        session.dispose();

    }
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        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic1_0.drl" ) ) );
        Package pkg = serialisePackage( builder.getPackage() );
        ruleBase.addPackage( pkg );

        List results = new ArrayList();
        StatefulSession session = ruleBase.newStatefulSession();
        session.setGlobal( "results",
                           results );

        InternalFactHandle stilton1 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       10 ) );
        InternalFactHandle brie1 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    10 ) );
        session.fireAllRules();

        byte[] serializedSession = serializeOut( session );
        byte[] serializedRulebase = serializeOut( ruleBase );

        session.dispose();

        assertEquals( 1,
                      results.size() );
        assertEquals( stilton1.getObject(),
                      results.get( 0 ) );

        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) serializeIn( serializedRulebase );
        session = ruleBase.newStatefulSession( new ByteArrayInputStream( serializedSession ) );
        results = (List) session.getGlobal( "results" );

        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic1_1.drl" ) ) );
        pkg = serialisePackage( builder.getPackage() );
        ruleBase.addPackage( pkg );
       
        InternalFactHandle stilton2 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                    20 ) );
        InternalFactHandle brie2 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                    20 ) );
        InternalFactHandle brie3 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                    30 ) );
        session.fireAllRules();
        assertEquals( 5,
                      results.size() );
        assertEquals( brie1.getObject(),
                      results.get( 1 ) );
        assertEquals( stilton2.getObject(),
                      results.get( 2 ) );
        assertEquals( brie2.getObject(),
                      results.get( 4 ) );
        assertEquals( brie3.getObject(),
                      results.get( 3 ) );

        serializedSession = null;
        serializedRulebase = null;

        serializedSession = serializeOut( session );
        serializedRulebase = serializeOut( ruleBase );

        session.dispose();
    }
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        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic1_0.drl" ) ) );
        Package pkg = serialisePackage( builder.getPackage() );
        ruleBase.addPackage( pkg );
       
        List results = new ArrayList();
        StatefulSession session = ruleBase.newStatefulSession();
        session.setGlobal( "results",
                           results );

        InternalFactHandle stilton1 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       10 ) );
        InternalFactHandle brie1 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    10 ) );
        session.fireAllRules();

        byte[] serializedSession = serializeOut( session );
        byte[] serializedRulebase = serializeOut( ruleBase );

        session.dispose();

        assertEquals( 1,
                      results.size() );
        assertEquals( stilton1.getObject(),
                      results.get( 0 ) );

        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) serializeIn( serializedRulebase );
        session = ruleBase.newStatefulSession( new ByteArrayInputStream( serializedSession ) );
        results = (List) session.getGlobal( "results" );
       
        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic3_0.drl" ) ) );
        pkg = serialisePackage( builder.getPackage() );
       
        ruleBase.addPackage( pkg );
       
        InternalFactHandle stilton2 = (InternalFactHandle) session.insert( new Cheese( "stilton", 20 ) );
        InternalFactHandle brie2 = (InternalFactHandle) session.insert( new Cheese( "brie", 20 ) );
        InternalFactHandle bob1 = (InternalFactHandle) session.insert( new Person( "bob", 20 ) );
        InternalFactHandle bob2 = (InternalFactHandle) session.insert( new Person( "bob", 30 ) );
        session.fireAllRules();
        assertEquals( 4,
                      results.size() );
        assertEquals( stilton2.getObject(),
                      results.get( 1 ) );
        assertEquals( bob2.getObject(),
                      results.get( 2 ) );
        assertEquals( bob1.getObject(),
                      results.get( 3 ) );

        serializedSession = null;
        serializedRulebase = null;
       
        serializedSession = serializeOut( session );
        serializedRulebase = serializeOut( ruleBase );
       
        session.dispose();
       
        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) serializeIn( serializedRulebase );
        session = ruleBase.newStatefulSession( new ByteArrayInputStream( serializedSession ) );
        results = (List) session.getGlobal( "results" );
       
        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic1_2.drl" ) ) );
        pkg = serialisePackage( builder.getPackage() );
        ruleBase.addPackage( pkg );
       
        InternalFactHandle stilton3 = (InternalFactHandle) session.insert( new Cheese( "stilton", 40 ) );
        InternalFactHandle brie3 = (InternalFactHandle) session.insert( new Cheese( "brie", 40 ) );
        InternalFactHandle bob3 = (InternalFactHandle) session.insert( new Person( "bob", 40 ) );
        InternalFactHandle bob4 = (InternalFactHandle) session.insert( new Person( "bob", 40 ) );
        InternalFactHandle addr1 = (InternalFactHandle) session.insert( new Address( "bangalore" ) );
        InternalFactHandle addr2 = (InternalFactHandle) session.insert( new Address( "India" ) );
       
        session.fireAllRules();
        assertEquals( 9,
                      results.size() );
        assertEquals( stilton3.getObject(),
                      results.get( 4 ) );
        assertEquals( bob4.getObject(),
                      results.get( 5 ) );
        assertEquals( bob3.getObject(),
                      results.get( 6 ) );
        assertEquals( addr2.getObject(),
                      results.get( 7 ) );
        assertEquals( addr1.getObject(),
                      results.get( 8 ) );

        serializedSession = null;
        serializedRulebase = null;
       
        serializedSession = serializeOut( session );
        serializedRulebase = serializeOut( ruleBase );
       
        session.dispose();
       
        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) serializeIn( serializedRulebase );
        session = ruleBase.newStatefulSession( new ByteArrayInputStream( serializedSession ) );
        results = (List) session.getGlobal( "results" );
       
        InternalFactHandle stilton4 = (InternalFactHandle) session.insert( new Cheese( "stilton", 50 ) );
        InternalFactHandle brie4 = (InternalFactHandle) session.insert( new Cheese( "brie", 50 ) );
        InternalFactHandle bob5 = (InternalFactHandle) session.insert( new Person( "bob", 50 ) );
        InternalFactHandle bob6 = (InternalFactHandle) session.insert( new Person( "bob", 50 ) );
        InternalFactHandle addr3 = (InternalFactHandle) session.insert( new Address( "Tripura" ) );
        InternalFactHandle addr4 = (InternalFactHandle) session.insert( new Address( "Agartala" ) );
       
        session.fireAllRules();
        assertEquals( 14,
                      results.size() );
        assertEquals( stilton4.getObject(),
                      results.get( 9 ) );
        assertEquals( bob6.getObject(),
                      results.get( 10 ) );
        assertEquals( bob5.getObject(),
                      results.get( 11 ) );
        assertEquals( addr4.getObject(),
                      results.get( 12 ) );
        assertEquals( addr3.getObject(),
                      results.get( 13 ) );

        serializedSession = null;
        serializedRulebase = null;
       
        serializedSession = serializeOut( session );
        serializedRulebase = serializeOut( ruleBase );
       
        session.dispose();
      
    }
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        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic1_0.drl" ) ) );
        Package pkg = serialisePackage( builder.getPackage() );
        ruleBase.addPackage( pkg );
       
        List results = new ArrayList();
        StatefulSession session = ruleBase.newStatefulSession();
        session.setGlobal( "results",
                           results );

        InternalFactHandle stilton1 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       10 ) );
        InternalFactHandle brie1 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    10 ) );
        session.fireAllRules();

        byte[] serializedSession = serializeOut( session );
        byte[] serializedRulebase = serializeOut( ruleBase );

        session.dispose();

        assertEquals( 1,
                      results.size() );
        assertEquals( stilton1.getObject(),
                      results.get( 0 ) );

        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) serializeIn( serializedRulebase );
        session = ruleBase.newStatefulSession( new ByteArrayInputStream( serializedSession ) );
        results = (List) session.getGlobal( "results" );
       
        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic3_0.drl" ) ) );
        pkg = serialisePackage( builder.getPackage() );
       
        ruleBase.addPackage( pkg );
       
        InternalFactHandle stilton2 = (InternalFactHandle) session.insert( new Cheese( "stilton", 20 ) );
        InternalFactHandle brie2 = (InternalFactHandle) session.insert( new Cheese( "brie", 20 ) );
        InternalFactHandle bob1 = (InternalFactHandle) session.insert( new Person( "bob", 20 ) );
        InternalFactHandle bob2 = (InternalFactHandle) session.insert( new Person( "bob", 30 ) );
        session.fireAllRules();
        assertEquals( 4,
                      results.size() );
        assertEquals( stilton2.getObject(),
                      results.get( 1 ) );
        assertEquals( bob2.getObject(),
                      results.get( 2 ) );
        assertEquals( bob1.getObject(),
                      results.get( 3 ) );

        serializedSession = null;
        serializedRulebase = null;
       
        serializedSession = serializeOut( session );
        serializedRulebase = serializeOut( ruleBase );
       
        session.dispose();
       
        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) serializeIn( serializedRulebase );
        session = ruleBase.newStatefulSession( new ByteArrayInputStream( serializedSession ) );
        results = (List) session.getGlobal( "results" );
      
        // CASE 1: remove rule
        ruleBase.removeRule("org.drools.test", "like stilton");
       
        InternalFactHandle stilton3 = (InternalFactHandle) session.insert( new Cheese( "stilton", 20 ) );
        InternalFactHandle brie3 = (InternalFactHandle) session.insert( new Cheese( "brie", 20 ) );
        InternalFactHandle bob3 = (InternalFactHandle) session.insert( new Person( "bob", 20 ) );
        InternalFactHandle bob4 = (InternalFactHandle) session.insert( new Person( "bob", 30 ) );
        session.fireAllRules();
        assertEquals( 6,
                      results.size() );
        assertEquals( bob4.getObject(),
                      results.get( 4 ) );
        assertEquals( bob3.getObject(),
                      results.get( 5 ) );


        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) serializeIn( serializedRulebase );
        session = ruleBase.newStatefulSession( new ByteArrayInputStream( serializedSession ) );
        results = (List) session.getGlobal( "results" );
      
        // CASE 2: remove pkg
        ruleBase.removePackage("org.drools.test");
       
        InternalFactHandle stilton4 = (InternalFactHandle) session.insert( new Cheese( "stilton", 20 ) );
        InternalFactHandle brie4 = (InternalFactHandle) session.insert( new Cheese( "brie", 20 ) );
        InternalFactHandle bob5 = (InternalFactHandle) session.insert( new Person( "bob", 20 ) );
        InternalFactHandle bob6 = (InternalFactHandle) session.insert( new Person( "bob", 30 ) );
        session.fireAllRules();
        assertEquals( 6,
                      results.size() );
        assertEquals( bob6.getObject(),
                      results.get( 4 ) );
        assertEquals( bob5.getObject(),
                      results.get( 5 ) );
       
        serializedSession = null;
        serializedRulebase = null;
       
        serializedSession = serializeOut( session );
        serializedRulebase = serializeOut( ruleBase );
       
        session.dispose();
      
    }
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                t[i] = new Thread( new Runnable() {
                    public void run() {
                        try {
                            final int iterations = count * 15 + 3000;
                            final List results = new ArrayList();
                            final StatefulSession session2 = ruleBase.newStatefulSession();
                            session2.setGlobal( "results",
                                                results );
                            session2.insert( new Integer( -1 ) );
                            for ( int k = 0; k < iterations; k++ ) {
                                session2.insert( new Integer( k ) );
                                if ( k + 1 != session2.getAgenda().agendaSize() ) {
                                    errorList.add( "THREAD-" + count + " ERROR: expected agenda size=" + (k + 1) + " but was " + session2.getAgenda().agendaSize() );
                                }
                            }
                            session2.fireAllRules();
                            session2.dispose();
                            if ( results.size() != iterations ) {
                                errorList.add( "THREAD-" + count + " ERROR: expected fire count=" + iterations + " but was " + results.size() );
                            }
                        } catch ( Exception e ) {
                            errorList.add( "THREAD-" + count + " EXCEPTION: " + e.getMessage() );
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                for (int i = 0; i < t.length; i++) {
                    t[i] = new Thread() {
                        public void run() {
                            try {
                                final int ITERATIONS = 300;
                                StatefulSession session = ruleBase.newStatefulSession();
                                List results = new ArrayList();
                                session.setGlobal( "results", results );
                                for( int k = 0; k < ITERATIONS; k++ ) {
                                    session.insert( new Order() );
                                }
                                session.fireAllRules();
                                session.dispose();
                                if( results.size() != ITERATIONS ) {
                                    errors.add( "Rules did not fired correctly. Expected: "+ITERATIONS+". Actual: "+results.size() );
                                }
                            } catch( Exception ex ) {
                                ex.printStackTrace();
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            this.status = Status.SUCCESS;
        }

        public void run() {
            try {
                StatefulSession session2 = this.rulebase.newStatefulSession();

                for ( int k = 0; k < ITERATIONS; k++ ) {
                    GrandParent gp = new GrandParent( "bob" );
                    Parent parent = new Parent( "mark" );
                    parent.setGrandParent( gp );

                    Child child = new Child( "mike" );
                    child.setParent( parent );

                    session2.insert( gp );
                    session2.insert( parent );
                    session2.insert( child );
                }

                session2.fireAllRules();
                session2.dispose();

            } catch ( Exception e ) {
                this.status = Status.FAIL;
                System.out.println( Thread.currentThread().getName() + " failed: " + e.getMessage() );
                e.printStackTrace();
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    /**
     * @param presumedScore never null
     */
    public void assertWorkingScore(Score presumedScore) {
        StatefulSession tmpWorkingMemory = ruleBase.newStatefulSession();
        ScoreCalculator tmpScoreCalculator = workingScoreCalculator.clone();
        tmpWorkingMemory.setGlobal(GLOBAL_SCORE_CALCULATOR_KEY, tmpScoreCalculator);
        for (Object fact : workingSolution.getFacts()) {
            tmpWorkingMemory.insert(fact);
        }
        tmpWorkingMemory.fireAllRules();
        Score realScore = tmpScoreCalculator.calculateScore();
        tmpWorkingMemory.dispose();
        if (!presumedScore.equals(realScore)) {
            throw new IllegalStateException(
                    "The presumedScore (" + presumedScore + ") is corrupted because it is not the realScore  ("
                            + realScore + ").\n"
                            + "Presumed workingMemory:\n" + buildConstraintOccurrenceSummary(workingMemory)
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