Package org.drools.rule.constraint

Examples of org.drools.rule.constraint.MvelConstraint

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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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        List<Declaration> declarations = new ArrayList<Declaration>();
        Set<String> declarationNames = new HashSet<String>();

        Iterator<MvelConstraint> constraintIterator = combinableConstraints.iterator();
        MvelConstraint firstConstraint = constraintIterator.next();
        constraints.remove(firstConstraint);
        String packageName = firstConstraint.getPackageName();
        String expression = firstConstraint.getExpression();
        for (Declaration declaration : firstConstraint.getRequiredDeclarations()) {
            if (declarationNames.add(declaration.getBindingName())) {
                declarations.add(declaration);
            }
        }

        while (constraintIterator.hasNext()) {
            MvelConstraint constraint = constraintIterator.next();
            constraints.remove(constraint);
            expression += " && " + constraint.getExpression();
            for (Declaration declaration : constraint.getRequiredDeclarations()) {
                if (declarationNames.add(declaration.getBindingName())) {
                    declarations.add(declaration);
                }
            }
        }

        MvelConstraint combinedConstraint = new MvelConstraint(packageName, expression, false,
                                                               declarations.toArray(new Declaration[declarations.size()]),
                                                               null, null, false);
        addConstraint(combinedConstraint);
    }
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        final Rule rule = pkgBuilder.getPackages()[0].getRule( "Test Rule" );
        final GroupElement and = rule.getLhs();
        final Pattern pat = (Pattern) and.getChildren().get( 0 );
        if (pat.getConstraints().get(0) instanceof MvelConstraint) {
            final MvelConstraint fc = (MvelConstraint) pat.getConstraints().get( 0 );
            assertTrue( "Wrong class. Expected java.math.BigDecimal. Found: " + fc.getField().getValue().getClass(),
                        fc.getField().getValue() instanceof BigDecimal );
        }
    }
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        final Rule rule = pkgBuilder.getPackages()[0].getRule( "Test Rule" );
        final GroupElement and = rule.getLhs();
        final Pattern pat = (Pattern) and.getChildren().get( 0 );
        if (pat.getConstraints().get(0) instanceof MvelConstraint) {
            final MvelConstraint fc = (MvelConstraint) pat.getConstraints().get( 0 );
            assertTrue( "Wrong class. Expected java.math.BigInteger. Found: " + fc.getField().getValue().getClass(),
                        fc.getField().getValue() instanceof BigInteger );
        }
    }
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        if (isUnification) {
            expression = resolveUnificationAmbiguity(expression, declarations, leftValue, rightValue);
        }
        IndexUtil.ConstraintType constraintType = IndexUtil.ConstraintType.decode(operatorDescr.getOperator());
        MVELCompilationUnit compilationUnit = isUnification ? null : buildCompilationUnit(context, pattern, expression, null);
        return new MvelConstraint(context.getPkg().getName(), expression, declarations, compilationUnit, constraintType, requiredDeclaration, extractor, isUnification);
    }
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        MVELCompilationUnit compilationUnit = isUnification ? null : buildCompilationUnit(context, pattern, expression, null);
        return new MvelConstraint(context.getPkg().getName(), expression, declarations, compilationUnit, constraintType, requiredDeclaration, extractor, isUnification);
    }

    public Constraint buildMvelConstraint(String packageName, String expression, Declaration[] declarations, MVELCompilationUnit compilationUnit, boolean isDynamic) {
        return new MvelConstraint( packageName, expression, declarations, compilationUnit, isDynamic );
    }
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    public Constraint buildMvelConstraint(String packageName, String expression, Declaration[] declarations, MVELCompilationUnit compilationUnit, boolean isDynamic) {
        return new MvelConstraint( packageName, expression, declarations, compilationUnit, isDynamic );
    }

    public Constraint buildMvelConstraint(String packageName, String expression, Declaration[] declarations, MVELCompilationUnit compilationUnit, boolean isDynamic, PredicateDescr base ) {
        return new MvelConstraint( packageName, expression, declarations, compilationUnit, isDynamic );
    }
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    public Constraint buildMvelConstraint(String packageName, String expression, Declaration[] declarations, MVELCompilationUnit compilationUnit, boolean isDynamic, PredicateDescr base ) {
        return new MvelConstraint( packageName, expression, declarations, compilationUnit, isDynamic );
    }

    public Constraint buildMvelConstraint(String packageName, String expression, Declaration[] declarations, MVELCompilationUnit compilationUnit, IndexUtil.ConstraintType constraintType, Declaration indexingDeclaration, InternalReadAccessor extractor, boolean isUnification) {
        return new MvelConstraint( packageName, expression, declarations, compilationUnit, constraintType, indexingDeclaration, extractor, isUnification );
    }
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        }

        String mvelExpr = normalizeMVELLiteralExpression(vtype, field, expression, leftValue, operator, rightValue, restrictionDescr);
        IndexUtil.ConstraintType constraintType = IndexUtil.ConstraintType.decode(operator);
        MVELCompilationUnit compilationUnit = buildCompilationUnit(context, pattern, mvelExpr, null);
        return new MvelConstraint(context.getPkg().getName(), mvelExpr, compilationUnit, constraintType, field, extractor);
    }
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    @Test
    public void testSingleAlpha() {

        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,
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Related Classes of org.drools.rule.constraint.MvelConstraint

  • org.drools.base.ClassObjectType
  • org.drools.base.DroolsQuery
  • org.drools.common.InternalFactHandle
  • org.drools.common.InternalRuleBase
  • org.drools.core.util.AbstractHashTable.FieldIndex
  • org.drools.core.util.index.IndexUtil
  • org.drools.core.util.index.IndexUtil$Factory$IndexSpec
  • org.drools.event.knowledgebase.KnowledgeBaseEventSupportTest
  • org.drools.event.rule.AgendaEventSupportTest
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