Package org.drools.core.rule.constraint

Examples of org.drools.core.rule.constraint.MvelConstraint

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    @Test
    public void testDoubleAlphaWithBeta() {

        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();

        final MvelConstraint lit = new MvelConstraintTestUtil( "type == \"stilton\"",
                                                               new ObjectFieldImpl( "stilton" ),
                                                               new MockExtractor() );

        final AlphaNode al = new AlphaNode( buildContext.getNextId(),
                                            lit,
                                            new MockObjectSource( 0 ),
                                            buildContext );

        ad.addObjectSink( al );

        assertNull( ad.otherSinks );
        assertNotNull( ad.hashedFieldIndexes );
        assertEquals( 1,
                      ad.hashableSinks.size() );
        assertEquals( al,
                      ad.getSinks()[0] );

        final MvelConstraint lit2 = new MvelConstraintTestUtil( "type == \"cheddar\"",
                                                               new ObjectFieldImpl( "cheddar" ),
                                                               new MockExtractor() );

        final AlphaNode al2 = new AlphaNode( buildContext.getNextId(),
                                             lit2,
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        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                          "type",
                                                          this.getClass().getClassLoader() );

        final MvelConstraint lit = new MvelConstraintTestUtil( "type == \"stilton\"",
                                                                new ObjectFieldImpl( "stilton" ),
                                                                new MockExtractor() );

        final AlphaNode al = new AlphaNode( buildContext.getNextId(),
                                            lit,
                                            new MockObjectSource( buildContext.getNextId() ),
                                            buildContext );

        ad.addObjectSink( al );

        assertNull( ad.otherSinks );
        assertNotNull( ad.hashedFieldIndexes );
        assertEquals( 1,
                      ad.hashableSinks.size() );
        assertEquals( al,
                      ad.getSinks()[0] );

        final MvelConstraint lit2 = new MvelConstraintTestUtil( "type == \"cheddar\"",
                                                                new ObjectFieldImpl( "cheddar" ),
                                                                new MockExtractor() );

        final AlphaNode al2 = new AlphaNode( buildContext.getNextId(),
                                             lit2,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );

        ad.addObjectSink( al2 );

        assertNull( ad.hashedSinkMap );
        assertEquals( 2,
                      ad.hashableSinks.size() );

        final MvelConstraint lit3 = new MvelConstraintTestUtil( "type == \"stinky\"",
                                                                new ObjectFieldImpl( "stinky" ),
                                                                new MockExtractor() );

        final AlphaNode al3 = new AlphaNode( buildContext.getNextId(),
                                             lit3,
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        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                          "charType",
                                                          this.getClass().getClassLoader() );

        final MvelConstraint lit = new MvelConstraintTestUtil( "charType == 65",
                                                               new LongFieldImpl( 65 ),
                                                               extractor );

        final AlphaNode al = new AlphaNode( buildContext.getNextId(),
                                            lit,
                                            new MockObjectSource( buildContext.getNextId() ),
                                            buildContext );

        ad.addObjectSink( al );

        assertNull( ad.otherSinks );
        assertNotNull( ad.hashedFieldIndexes );
        assertEquals( 1,
                      ad.hashableSinks.size() );
        assertEquals( al,
                      ad.getSinks()[0] );

        final MvelConstraint lit2 = new MvelConstraintTestUtil( "charType == 66",
                                                                new LongFieldImpl( 66 ),
                                                                extractor );

        final AlphaNode al2 = new AlphaNode( buildContext.getNextId(),
                                             lit2,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );

        ad.addObjectSink( al2 );

        assertNull( ad.hashedSinkMap );
        assertEquals( 2,
                      ad.hashableSinks.size() );

        final MvelConstraint lit3 = new MvelConstraintTestUtil( "charType == 67",
                                                                new LongFieldImpl( 67 ),
                                                                extractor );

        final AlphaNode al3 = new AlphaNode( buildContext.getNextId(),
                                             lit3,
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        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                          "charObjectType",
                                                          this.getClass().getClassLoader() );

        final MvelConstraint lit = new MvelConstraintTestUtil( "charObjectType == 65",
                                                               new LongFieldImpl( 65 ),
                                                               extractor );

        final AlphaNode al = new AlphaNode( buildContext.getNextId(),
                                            lit,
                                            new MockObjectSource( buildContext.getNextId() ),
                                            buildContext );

        ad.addObjectSink( al );

        assertNull( ad.otherSinks );
        assertNotNull( ad.hashedFieldIndexes );
        assertEquals( 1,
                      ad.hashableSinks.size() );
        assertEquals( al,
                      ad.getSinks()[0] );

        final MvelConstraint lit2 = new MvelConstraintTestUtil( "charObjectType == 66",
                                                                new LongFieldImpl( 66 ),
                                                                extractor );

        final AlphaNode al2 = new AlphaNode( buildContext.getNextId(),
                                             lit2,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );

        ad.addObjectSink( al2 );

        assertNull( ad.hashedSinkMap );
        assertEquals( 2,
                      ad.hashableSinks.size() );

        final MvelConstraint lit3 = new MvelConstraintTestUtil( "charObjectType == 67",
                                                                new LongFieldImpl( 67 ),
                                                                extractor );

        final AlphaNode al3 = new AlphaNode( buildContext.getNextId(),
                                             lit3,
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        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                          "type",
                                                          this.getClass().getClassLoader() );

        final MvelConstraint lit1 = new MvelConstraintTestUtil( "type == \"stilton\"",
                                                                new ObjectFieldImpl( "stilton" ),
                                                                new MockExtractor() );

        final AlphaNode al1 = new AlphaNode( buildContext.getNextId(),
                                             lit1,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );

        final MvelConstraint lit2 = new MvelConstraintTestUtil( "type == \"brie\"",
                new ObjectFieldImpl( "brie" ),
                new MockExtractor() );

        final AlphaNode al2 = new AlphaNode( buildContext.getNextId(),
                                             lit2,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );

        final MvelConstraint lit3 = new MvelConstraintTestUtil( "type == \"muzzarela\"",
                                                                new ObjectFieldImpl( "muzzarela" ),
                                                                new MockExtractor() );

        final AlphaNode al3 = new AlphaNode( buildContext.getNextId(),
                                             lit3,
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                "type",
                getClass().getClassLoader());

        final FieldValue field = FieldFactory.getInstance().getFieldValue( "cheddar" );

        final MvelConstraint constraint = new MvelConstraintTestUtil("type == \"cheddar\"", field, extractor);

        pattern.addConstraint( constraint );
        rule1.addPattern( pattern );

        rule1.setConsequence( new Consequence() {
            private static final long serialVersionUID = 510l;

            public void evaluate(final KnowledgeHelper knowledgeHelper,
                                 final WorkingMemory workingMemory) throws Exception {
            }

            public void readExternal(ObjectInput in) throws IOException,
                                                    ClassNotFoundException {

            }

            public void writeExternal(ObjectOutput out) throws IOException {

            }
           
            public String getName() {
                return "default";
            }
        } );

        final Rule rule2 = new Rule( "test2" );
        final ClassObjectType cheeseObjectType2 = new ClassObjectType( Cheese.class );
        final Pattern pattern2 = new Pattern( 0,
                                              cheeseObjectType2 );

        final FieldValue field2 = FieldFactory.getInstance().getFieldValue( "stilton" );

        final MvelConstraint constraint2 = new MvelConstraintTestUtil("type == \"stilton\"", field, extractor);

        pattern2.addConstraint( constraint2 );
        rule2.addPattern( pattern2 );

        rule2.setConsequence( new Consequence() {
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        final ClassFieldReader extractor = store.getReader(Cheese.class,
                "type",
                getClass().getClassLoader());

        final MvelConstraint constraint = new MvelConstraintTestUtil( "type == \"cheddar\"",
                                                                      FieldFactory.getInstance().getFieldValue( "cheddar" ),
                                                                      extractor );

        final ContextEntry context = constraint.createContextEntry();

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

        final InternalFactHandle cheddarHandle = (InternalFactHandle) workingMemory.insert( cheddar );

        // check constraint
        assertTrue( constraint.isAllowed( cheddarHandle,
                                          workingMemory,
                                          context ) );

        final Cheese stilton = new Cheese( "stilton",
                                           5 );

        final InternalFactHandle stiltonHandle = (InternalFactHandle) workingMemory.insert( stilton );

        // check constraint
        assertFalse( constraint.isAllowed( stiltonHandle,
                                           workingMemory,
                                           context ) );
    }
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        final ClassFieldReader extractor = store.getReader(Cheese.class,
                "price",
                getClass().getClassLoader());

        final MvelConstraint constraint = new MvelConstraintTestUtil( "price == 5",
                                                                      FieldFactory.getInstance().getFieldValue( 5 ),
                                                                      extractor );
        final ContextEntry context = constraint.createContextEntry();

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

        final InternalFactHandle cheddarHandle = (InternalFactHandle) workingMemory.insert( cheddar );

        // check constraint
        assertTrue( constraint.isAllowed( cheddarHandle,
                                          workingMemory,
                                          context ) );

        final Cheese stilton = new Cheese( "stilton",
                                           10 );

        final InternalFactHandle stiltonHandle = (InternalFactHandle) workingMemory.insert( stilton );

        // check constraint
        assertFalse(constraint.isAllowed(stiltonHandle,
                workingMemory,
                context));
    }
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    private static int findDualConstraint(BetaNodeFieldConstraint[] constraints, int comparisonPos) {
        if ( !(USE_RANGE_INDEX && constraints[comparisonPos] instanceof MvelConstraint) ) {
            return -1;
        }
        MvelConstraint firstConstraint = (MvelConstraint) constraints[comparisonPos];
        String leftValue = getLeftValueInExpression(firstConstraint.getExpression());
        for (int i = comparisonPos+1; i < constraints.length; i++) {
            if (constraints[i] instanceof MvelConstraint) {
                MvelConstraint dualConstraint = (MvelConstraint) constraints[i];
                if (isDual(firstConstraint, leftValue, dualConstraint)) {
                    return i;
                }
            }
        }
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                    indexes = indexList.toArray(new FieldIndex[indexList.size()]);

                } else if (constraintType.isComparison()) {
                    // look for a dual constraint to create a range index
                    if (USE_RANGE_INDEX && constraints[firstIndexableConstraint] instanceof MvelConstraint) {
                        MvelConstraint firstConstraint = (MvelConstraint) constraints[firstIndexableConstraint];
                        String leftValue = getLeftValueInExpression(firstConstraint.getExpression());
                        for (int i = firstIndexableConstraint+1; i < constraints.length; i++) {
                            if (constraints[i] instanceof MvelConstraint) {
                                MvelConstraint dualConstraint = (MvelConstraint) constraints[i];
                                if (isDual(firstConstraint, leftValue, dualConstraint)) {
                                    constraintType = ConstraintType.RANGE;
                                    if (firstConstraint.getConstraintType().isAscending()) {
                                        ascendingConstraintType = firstConstraint.getConstraintType();
                                        descendingConstraintType = dualConstraint.getConstraintType();
                                        indexes = new FieldIndex[]{ firstConstraint.getFieldIndex(), dualConstraint.getFieldIndex() };
                                    } else {
                                        ascendingConstraintType = dualConstraint.getConstraintType();
                                        descendingConstraintType = firstConstraint.getConstraintType();
                                        indexes = new FieldIndex[]{ dualConstraint.getFieldIndex(), firstConstraint.getFieldIndex() };
                                    }
                                    return;
                                }
                            }
                        }
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Related Classes of org.drools.core.rule.constraint.MvelConstraint

  • org.drools.compiler.rule.builder.dialect.java.RuleBuilderTest
  • org.drools.compiler.rule.builder.MVELConstraintBuilder
  • org.drools.core.base.DroolsQuery
  • org.drools.core.common.InternalRuleBase
  • org.drools.core.definitions.InternalKnowledgePackage
  • org.drools.core.event.knowledgebase.KnowledgeBaseEventSupportTest
  • org.drools.core.event.rule.AgendaEventSupportTest
  • org.drools.core.event.RuleBaseEventSupportTest
  • org.drools.core.impl.InternalKnowledgeBase
  • org.drools.core.reteoo.AlphaNodeTest
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