Package org.drools.rule.ConstraintTest

Examples of org.drools.rule.ConstraintTest.Cheese

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                                                               stringObjectType,
                                                               typeOfCheeseExtractor,
                                                               0 );

        /* Create some facts */
        Cheese cheddar = new Cheese( "cheddar",
                                     5 );

        /* Check we can extract Declarations correctly */
        assertEquals( "cheddar",
                      typeOfCheeseDeclaration.getValue( cheddar ) );
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        LiteralExpressionConstraint isCheddar = new LiteralExpressionConstraint() {

            public boolean isAllowed(Object object,
                                     ConstraintComparator comparator)
            {
                Cheese cheese = (Cheese) object;
                return comparator.compare( cheese.getType(),
                                           "cheddar" );

            }
        };

        /*
         * Creates a constraint with the given expression
         */
        LiteralConstraint constraint0 = new LiteralConstraint( isCheddar,
                                                               new StringConstraintComparator( ConstraintComparator.EQUAL ) );

        /* Without Memory */
        AlphaNode alphaNode = new AlphaNode( 2,
                                             constraint0,
                                             false,
                                             source );
        MockObjectSink sink = new MockObjectSink();
        alphaNode.addObjectSink( sink );

        Cheese cheddar = new Cheese( "cheddar",
                                     5 );

        FactHandleImpl f0 = new FactHandleImpl( 0 );
        workingMemory.putObject( f0,
                                 cheddar );

        /* check sink is empty */
        assertLength( 0,
                      sink.getAsserted() );

        /* check alpha memory is empty */
        Set memory = (Set) workingMemory.getNodeMemory( alphaNode );
        assertLength( 0,
                      memory );

        /* object should assert as it passes test */
        alphaNode.assertObject( cheddar,
                                f0,
                                context,
                                workingMemory );

        assertLength( 1,
                      sink.getAsserted() );
        assertLength( 0,
                      memory );

        Object[] list = (Object[]) sink.getAsserted().get( 0 );
        assertSame( cheddar,
                    list[0] );

        FactHandleImpl f1 = new FactHandleImpl( 0 );
        Cheese stilton = new Cheese( "stilton",
                                     6 );

        /* object should NOT assert as it does not pass test */
        alphaNode.assertObject( stilton,
                                f1,
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        LiteralExpressionConstraint isCheddar = new LiteralExpressionConstraint() {

            public boolean isAllowed(Object object,
                                     ConstraintComparator comparator)
            {
                Cheese cheese = (Cheese) object;
                return comparator.compare( cheese.getType(),
                                           "cheddar" );

            }
        };

        /*
         * Creates a constraint with the given expression
         */
        LiteralConstraint constraint0 = new LiteralConstraint( isCheddar,
                                                               new StringConstraintComparator( ConstraintComparator.EQUAL ) );

        /* With Memory */
        AlphaNode alphaNode = new AlphaNode( 2,
                                             constraint0,
                                             true,
                                             source );

        MockObjectSink sink = new MockObjectSink();
        alphaNode.addObjectSink( sink );

        FactHandleImpl f0 = new FactHandleImpl( 0 );
        Cheese cheddar = new Cheese( "cheddar",
                                     5 );
        workingMemory.putObject( f0,
                                 cheddar );

        /* check sink is empty */
        assertLength( 0,
                      sink.getAsserted() );

        /* check alpha memory is empty */
        Set memory = (Set) workingMemory.getNodeMemory( alphaNode );
        assertLength( 0,
                      memory );

        /* object should assert as it passes text */
        alphaNode.assertObject( cheddar,
                                f0,
                                context,
                                workingMemory );

        assertLength( 1,
                      sink.getAsserted() );
        assertLength( 1,
                      memory );
        Object[] list = (Object[]) sink.getAsserted().get( 0 );
        assertSame( cheddar,
                    list[0] );
        assertTrue( "Should contain 'cheddar handle'",
                    memory.contains( f0 ) );

        /* object should not assert as it already exists */
        alphaNode.assertObject( cheddar,
                                f0,
                                context,
                                workingMemory );

        assertLength( 1,
                      sink.getAsserted() );
        assertLength( 1,
                      memory );

        FactHandleImpl f1 = new FactHandleImpl( 1 );
        Cheese stilton = new Cheese( "stilton",
                                     6 );

        /* object should NOT assert as it does not pass test */
        alphaNode.assertObject( stilton,
                                f1,
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        ReturnValueExpressionConstraint isCheddar = new ReturnValueExpressionConstraint() {

            public boolean isAllowed(Object object,
                                     ConstraintComparator comparator)
            {
                Cheese cheese = (Cheese) object;
                return comparator.compare( cheese.getType(),
                                           "cheddar" );
            }

            /* everything is ignored - except object */
            public boolean isAllowed(Object object,
                                     FactHandle handle,
                                     Declaration[] declarations,
                                     Tuple tuple,
                                     ConstraintComparator comparator)
            {
                Cheese cheese = (Cheese) object;
                return comparator.compare( cheese.getType(),
                                           "cheddar" );
            }
        };

        /*
         * Creates a constraint with the given expression
         */
        ReturnValueConstraint constraint0 = new ReturnValueConstraint( isCheddar,
                                                                       null, // alpha nodes cannot have required declarations
                                                                       new StringConstraintComparator( ConstraintComparator.EQUAL ) );

        AlphaNode alphaNode = new AlphaNode( 2,
                                             constraint0,
                                             true,
                                             source );
        MockObjectSink sink = new MockObjectSink();
        alphaNode.addObjectSink( sink );

        Cheese cheddar = new Cheese( "cheddar",
                                     5 );

        FactHandleImpl f0 = new FactHandleImpl( 0 );
        workingMemory.putObject( f0,
                                 cheddar );

        assertLength( 0,
                      sink.getAsserted() );

        /* object should assert as it passes text */
        alphaNode.assertObject( cheddar,
                                f0,
                                context,
                                workingMemory );

        assertLength( 1,
                      sink.getAsserted() );
        Object[] list = (Object[]) sink.getAsserted().get( 0 );
        assertSame( cheddar,
                    list[0] );

        Cheese stilton = new Cheese( "stilton",
                                     6 );

        /* object should not assert as it does not pass text */
        alphaNode.assertObject( stilton,
                                f0,
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        LiteralExpressionConstraint isCheddar = new LiteralExpressionConstraint() {

            public boolean isAllowed(Object object,
                                     ConstraintComparator comparator)
            {
                Cheese cheese = (Cheese) object;
                return comparator.compare( cheese.getType(),
                                           "cheddar" );

            }
        };

        /*
         * Creates a constraint with the given expression
         */
        LiteralConstraint constraint0 = new LiteralConstraint( isCheddar,
                                                               new StringConstraintComparator( ConstraintComparator.EQUAL ) );

        /* With Memory */
        AlphaNode alphaNode = new AlphaNode( 2,
                                             constraint0,
                                             true,
                                             source );
        MockObjectSink sink = new MockObjectSink();
        alphaNode.addObjectSink( sink );

        Cheese cheddar = new Cheese( "cheddar",
                                     5 );

        FactHandleImpl f0 = new FactHandleImpl( 0 );
        workingMemory.putObject( f0,
                                 cheddar );
View Full Code Here
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Related Classes of org.drools.rule.ConstraintTest.Cheese

  • org.drools.reteoo.AlphaNodeTest
  • org.drools.rule.DeclarationTest
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