Package org.drools.rule.constraint

Examples of org.drools.rule.constraint.MvelConstraint$UnificationContextEntry

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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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            if (!isMvelOperator(operator)) {
                return new EvaluatorConstraint(restriction.getRequiredDeclarations(), restriction.getEvaluator(), extractor);
            }

            expression = resolveUnificationAmbiguity(expression, declrations, leftValue, rightValue, restriction);
            return new MvelConstraint(context.getPkg().getName(), expression, operator, declrations, getIndexingDeclaration(restriction), extractor);
        } else {
            return new VariableConstraint(extractor, restriction);
        }
    }
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                Evaluator evaluator = buildLiteralEvaluator(context, extractor, restrictionDescr, field, vtype);
                return new EvaluatorConstraint(field, evaluator, extractor);
            }

            String mvelExpr = normalizeMVELLiteralExpression(vtype, field, expression, leftValue, operator, rightValue, restrictionDescr);
            return new MvelConstraint(context.getPkg().getName(), mvelExpr, operator);
        } else {
            LiteralRestriction restriction = buildLiteralRestriction(context, extractor, restrictionDescr, field, vtype);
            return restriction != null ? new LiteralConstraint(extractor, restriction) : null;
        }
    }
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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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     * @see org.drools.reteoo.BaseNodeVertex#getHtml()
     */
    public String getHtml() {
        AlphaNodeFieldConstraint constraint = this.node.getConstraint();
        if (constraint instanceof MvelConstraint) {
          MvelConstraint mvelConstraint = (MvelConstraint) constraint;
            return NODE_NAME + "<BR/>expression : " + mvelConstraint.toString();
        }
        return NODE_NAME + "<BR/>";
    }
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     * @return field name
     */
    public String getFieldName() {
        AlphaNodeFieldConstraint constraint = this.node.getConstraint();
        if (constraint instanceof MvelConstraint) {
          MvelConstraint mvelConstraint = (MvelConstraint) constraint;
            InternalReadAccessor accessor = mvelConstraint.getFieldExtractor();
            if (accessor instanceof ClassFieldReader) {
                return ((ClassFieldReader) accessor).getFieldName();
            }
        }
        return null;
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     * @return evaluator string
     */
    public String getEvaluator() {
        AlphaNodeFieldConstraint constraint = this.node.getConstraint();
        if (constraint instanceof MvelConstraint) {
          MvelConstraint mvelConstraint = (MvelConstraint) constraint;
            return mvelConstraint.toString();
        }
        return null;
    }
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     * @return field string
     */
    public String getValue() {
        AlphaNodeFieldConstraint constraint = this.node.getConstraint();
        if (constraint instanceof MvelConstraint) {
          MvelConstraint mvelConstraint = (MvelConstraint) constraint;
            return mvelConstraint.getField().toString();
        }
        return null;
    }
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Related Classes of org.drools.rule.constraint.MvelConstraint$UnificationContextEntry

  • org.drools.base.ClassObjectType
  • org.drools.base.DroolsQuery
  • org.drools.common.InternalFactHandle
  • org.drools.common.InternalRuleBase
  • org.drools.core.base.DroolsQuery
  • 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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