Package org.drools.rule

Examples of org.drools.rule.PredicateConstraint

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        final MVELPredicateBuilder builder = new MVELPredicateBuilder();
        final Declaration[] previousDeclarations = new Declaration[]{a};
        final Declaration[] localDeclarations = new Declaration[]{b};

        final PredicateConstraint predicate = new PredicateConstraint( null,
                                                                       localDeclarations );
       
        AnalysisResult analysis = context.getDialect().analyzeExpression( context,
                                                                          predicateDescr,
                                                                          predicateDescr.getContent(),
                                                                          new BoundIdentifiers( declarationResolver.getDeclarationClasses( (Rule) null ), new HashMap(), null, Cheese.class ) );

        builder.build( context,
                       new BoundIdentifiers( declarationResolver.getDeclarationClasses( (Rule) null ), new HashMap() ),
                       previousDeclarations,
                       localDeclarations,
                       predicate,
                       predicateDescr,
                       analysis );
       
        ( (MVELPredicateExpression) predicate.getPredicateExpression()).compile( (MVELDialectRuntimeData) pkgRegistry.getDialectRuntimeRegistry().getDialectData( "mvel" ) );

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

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

        final Cheese cheddar = new Cheese( "cheddar",
                                           10 );
       
        MockLeftTupleSink sink = new MockLeftTupleSink();
       
        final InternalFactHandle f0 = (InternalFactHandle) wm.insert( cheddar );
        final InternalFactHandle f1 = (InternalFactHandle) wm.insert( stilton );
        final LeftTupleImpl tuple = new LeftTupleImpl( f0, sink, true );

        final PredicateContextEntry predicateContext = (PredicateContextEntry) predicate.createContextEntry();
        predicateContext.leftTuple = tuple;
        predicateContext.workingMemory = wm;

        assertTrue( predicate.isAllowedCachedLeft( predicateContext,
                                                   f1 ) );

        cheddar.setPrice( 9 );
        wm.update( f0,
                   cheddar );

        assertFalse( predicate.isAllowedCachedLeft( predicateContext,
                                                    f1 ) );
    }
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        final Declaration[] previousDeclarations = (Declaration[]) tupleDeclarations.toArray( new Declaration[tupleDeclarations.size()] );
        final Declaration[] localDeclarations = (Declaration[]) factDeclarations.toArray( new Declaration[factDeclarations.size()] );
        final String[] requiredGlobals = (String[]) usedIdentifiers[1].toArray( new String[usedIdentifiers[1].size()] );

        final PredicateConstraint predicateConstraint = new PredicateConstraint( null,
                                                                                 previousDeclarations,
                                                                                 localDeclarations,
                                                                                 requiredGlobals );

        if ( container == null ) {
            pattern.addConstraint( predicateConstraint );
        } else {
            if ( predicateConstraint.getType().equals( Constraint.ConstraintType.UNKNOWN ) ) {
                this.setConstraintType( pattern,
                                        (MutableTypeConstraint) predicateConstraint );
            }
            container.addConstraint( predicateConstraint );
        }
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                     SortDeclarations.instance );

        boolean isJavaEval = isEvalExpression && context.getDialect() instanceof JavaDialect;

        if (isJavaEval) {
            final PredicateConstraint predicateConstraint = new PredicateConstraint( null,
                    previousDeclarations,
                    localDeclarations,
                    requiredGlobals,
                    requiredOperators );
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    @Test
    public void testAlphaWithPredicate() {
        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        final AlphaNode al = new AlphaNode( buildContext.getNextId(),
                                            new PredicateConstraint( null,
                                                                     null ),
                                            null,
                                            buildContext );
        ad.addObjectSink( al );
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        final Declaration[] previousDeclarations = (Declaration[]) tupleDeclarations.toArray( new Declaration[tupleDeclarations.size()] );
        final Declaration[] localDeclarations = (Declaration[]) factDeclarations.toArray( new Declaration[factDeclarations.size()] );
        final String[] requiredGlobals = (String[]) usedIdentifiers[1].toArray( new String[usedIdentifiers[1].size()] );

        final PredicateConstraint predicateConstraint = new PredicateConstraint( null,
                                                                                 previousDeclarations,
                                                                                 localDeclarations,
                                                                                 requiredGlobals );

        if ( container == null ) {
            pattern.addConstraint( predicateConstraint );
        } else {
            if ( predicateConstraint.getType().equals( Constraint.ConstraintType.UNKNOWN ) ) {
                this.setConstraintType( pattern,
                                        (MutableTypeConstraint) predicateConstraint );
            }
            container.addConstraint( predicateConstraint );
        }
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Related Classes of org.drools.rule.PredicateConstraint

  • org.drools.compiler.PackageBuilderTest
  • org.drools.reteoo.CompositeObjectSinkAdapterTest
  • org.drools.rule.builder.dialect.java.JavaDialectBinaryEqualityTest
  • org.drools.rule.builder.dialect.java.JavaDialectTest
  • org.drools.rule.builder.dialect.mvel.MVELPredicateBuilderTest
  • org.drools.rule.builder.PatternBuilder
  • org.drools.RuntimeDroolsException
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