Package org.drools.rule

Examples of org.drools.rule.RuleConditionElement

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        context.pushRuleComponent( accumulate );

        final List resultBetaConstraints = context.getBetaconstraints();
        final List resultAlphaConstraints = context.getAlphaConstraints();

        RuleConditionElement source = accumulate.getSource();
        if( source instanceof GroupElement ) {
            GroupElement ge = (GroupElement) source;
            if( ge.isAnd() && ge.getChildren().size() == 1 ) {
                source = (RuleConditionElement) ge.getChildren().get( 0 );
            }
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            // will have no child
            if ( and.getChildren().isEmpty() ) {
                return true;
            }

            final RuleConditionElement child = and.getChildren().get( 0 );
            final ReteooComponentBuilder builder = utils.getBuilderFor( child );

            return builder.requiresLeftActivation( utils,
                                                   child );
        }
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            // NOT must save some context info to restore it later
            final int currentPatternIndex = context.getCurrentPatternOffset();
            final LeftTupleSource tupleSource = context.getTupleSource();

            // get child
            final RuleConditionElement child = not.getChildren().get( 0 );

            // get builder for child
            final ReteooComponentBuilder builder = utils.getBuilderFor( child );

            // builds the child
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            // EXISTS must save some context info to restore it later
            final int currentPatternIndex = context.getCurrentPatternOffset();
            final LeftTupleSource tupleSource = context.getTupleSource();

            // get child
            final RuleConditionElement child = exists.getChildren().get( 0 );

            // get builder for child
            final ReteooComponentBuilder builder = utils.getBuilderFor( child );

            // builds the child
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            }
        }

        // lets see if it maps to a query
        if ( objectType == null ) {
            RuleConditionElement rce = null;
            // it might be a recursive query, so check for same names
            if ( context.getRule().getName().equals( patternDescr.getObjectType() ) ) {
                // it's a query so delegate to the QueryElementBuilder
                QueryElementBuilder qeBuilder = new QueryElementBuilder();
                rce = qeBuilder.build( context,
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    private Pattern getLastPattern(RuleBuildContext context) {
        GroupElement ge = (GroupElement)context.getBuildStack().peek();
        List<RuleConditionElement> siblings = ge.getChildren();
        for (int i = siblings.size()-1; i >= 0; i--) {
            RuleConditionElement element = siblings.get(i);
            if (element instanceof Pattern) {
                return (Pattern) element;
            }
        }
        throw new RuntimeException("Cannot find a Pattern in the RuleBuildContext");
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        }
    }

    private boolean isNegative(final BuildContext context) {
        for ( ListIterator<RuleConditionElement> it = context.stackIterator(); it.hasPrevious(); ) {
            RuleConditionElement rce = it.previous();
            if ( rce instanceof GroupElement && ((GroupElement) rce).isNot() ) {
                return true;
            }
        }
        return false;
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        if ( this.map.containsKey( (name) ) ) {
            return true;
        }
       
        for ( int i = this.buildStack.size() - 1; i >= 0; i-- ) {
            final RuleConditionElement rce = buildStack.get( i );
            final Declaration declaration = rce.getInnerDeclarations().get( name );
            if ( declaration != null ) {
                // if it is an OR and it is duplicated, we can stop looking for duplication now
                // as it is a separate logical branch
                return !((rce instanceof GroupElement) && ((GroupElement) rce).isOr());
            }
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            // gets corresponding builder
            final RuleConditionBuilder builder = (RuleConditionBuilder) context.getDialect().getBuilder( child.getClass() );

            if ( builder != null ) {
                final RuleConditionElement element = builder.build( context,
                                                                    child );
                // in case there is a problem with the building,
                // builder will return null. Ex: ClassNotFound for the pattern type
                if ( element != null ) {
                    ge.addChild( element );
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            }

            final RuleConditionBuilder builder = (RuleConditionBuilder) context.getDialect().getBuilder( accumDescr.getInput().getClass() );

            // create source CE
            final RuleConditionElement source = builder.build( context,
                                                               accumDescr.getInput() );

            if ( source == null ) {
                return null;
            }

            MVELDialect dialect = (MVELDialect) context.getDialect();

            Map<String, Declaration> decls = context.getDeclarationResolver().getDeclarations( context.getRule() );
            Map<String, Declaration> sourceOuterDeclr = source.getOuterDeclarations();

            Map<String, Declaration> mergedDecl = new HashMap( decls );
            mergedDecl.putAll( sourceOuterDeclr );

            Map<String, Class< ? >> declarationClasses = context.getDeclarationResolver().getDeclarationClasses( decls );
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Related Classes of org.drools.rule.RuleConditionElement

  • org.drools.eclipse.DRLInfo$RuleInfo
  • org.drools.lang.api.DescrBuilderTest
  • org.drools.reteoo.builder.AccumulateBuilder
  • org.drools.reteoo.builder.BuildUtils
  • org.drools.reteoo.builder.GroupElementBuilder$AndBuilder
  • org.drools.reteoo.builder.GroupElementBuilder$ExistsBuilder
  • org.drools.reteoo.builder.GroupElementBuilder$NotBuilder
  • org.drools.reteoo.builder.PatternBuilder
  • org.drools.rule.builder.ConditionalBranchBuilder
  • org.drools.rule.builder.dialect.java.JavaAccumulateBuilder
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