Package org.drools.core.rule

Examples of org.drools.core.rule.Declaration

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    public Declaration getDeclaration(final RuleImpl rule,
                                      final String identifier) {
        // it may be a local bound variable
        for ( int i = this.buildStack.size() - 1; i >= 0; i-- ) {
            final Declaration declaration = buildStack.get( i ).getInnerDeclarations().get( identifier );
            if ( declaration != null ) {
                return declaration;
            }
        }
        // look at parent rules
        if ( rule != null && rule.getParent() != null ) {
            // recursive algorithm for each parent
            //     -> lhs.getInnerDeclarations()
            Declaration parentDeclaration = getExtendedDeclaration( rule.getParent(),
                                                                    identifier );
            if ( null != parentDeclaration ) {
                return parentDeclaration;
            }
        }

        // it may be a global or something
        if ( this.map.containsKey( (identifier) ) ) {
            Class<?> cls = this.map.get( identifier );
            ClassObjectType classObjectType = new ClassObjectType( cls );

            Declaration declaration;
            final Pattern dummy = new Pattern( 0,
                                               classObjectType );

            InternalReadAccessor globalExtractor = getReadAcessor( identifier,
                                                                   classObjectType );
            declaration = new Declaration( identifier,
                                           globalExtractor,
                                           dummy );
            if ( pkg != null ) {

                // make sure dummy and globalExtractor are wired up to correct ClassObjectType
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    }

    public boolean available(RuleImpl rule,
                             final String name) {
        for ( int i = this.buildStack.size() - 1; i >= 0; i-- ) {
            final Declaration declaration = buildStack.get( i ).getInnerDeclarations().get( name );
            if ( declaration != null ) {
                return true;
            }
        }
        if ( this.map.containsKey( (name) ) ) {
            return true;
        }

        // look at parent rules
        if ( rule != null && rule.getParent() != null ) {
            // recursive algorithm for each parent
            //     -> lhs.getInnerDeclarations()
            Declaration parentDeclaration = getExtendedDeclaration( rule.getParent(),
                                                                    name );
            if ( null != parentDeclaration ) {
                return true;
            }
        }
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            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
                boolean inOr = ((rce instanceof GroupElement) && ((GroupElement) rce).isOr());
                if ( ! inOr || type == null ) {
                    return ! inOr;
                }
                return ! declaration.getExtractor().getExtractToClass().getName().equals( type );
            }
        }
        // look at parent rules
        if ( rule != null && rule.getParent() != null ) {
            // recursive algorithm for each parent
            //     -> lhs.getInnerDeclarations()
            Declaration parentDeclaration = getExtendedDeclaration( rule.getParent(),
                                                                    name );
            if ( null != parentDeclaration ) {
                return true;
            }
        }
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            QueryImpl query = node.getQuery();
            Declaration[] decls = node.getDeclarations();
            DroolsQuery dquery = (DroolsQuery) this.factHandle.getObject();
            Object[] objects = new Object[ determineResultSize( query, dquery ) ];

            Declaration decl;
            for ( int i = 0, length = this.variables.length; i < length; i++ ) {
                decl = decls[this.variables[i]];
                objects[this.variables[i]] = decl.getValue( workingMemory,
                                                            resultLeftTuple.get( decl ).getObject() );
            }

            QueryElementFactHandle resultHandle = createQueryResultHandle(context,
                                                                          workingMemory,
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            InternalFactHandle rootHandle = resultLeftTuple.get( 0 );
            DroolsQuery dquery = (DroolsQuery) rootHandle.getObject();

            Object[] objects = new Object[dquery.getElements().length];

            Declaration decl;
            for ( int i = 0, length = this.variables.length; i < length; i++ ) {
                decl = decls[this.variables[i]];
                objects[this.variables[i]] = decl.getValue( workingMemory,
                                                            resultLeftTuple.get( decl ).getObject() );
            }

            QueryElementFactHandle handle = (QueryElementFactHandle) rightTuple.getFactHandle();
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                             args.length);

            int[] declIndexes = queryNode.getQueryElement().getDeclIndexes();

            for (int i = 0, length = declIndexes.length; i < length; i++) {
                Declaration declr = (Declaration) argTemplate[declIndexes[i]];

                Object tupleObject = leftTuple.get(declr).getObject();

                Object o;

                if (tupleObject instanceof DroolsQuery) {
                    // If the query passed in a Variable, we need to use it
                    ArrayElementReader arrayReader = (ArrayElementReader) declr.getExtractor();
                    if (((DroolsQuery) tupleObject).getVariables()[arrayReader.getIndex()] != null) {
                        o = Variable.v;
                    } else {
                        o = declr.getValue(wm,
                                           tupleObject);
                    }
                } else {
                    o = declr.getValue(wm,
                                       tupleObject);
                }

                args[declIndexes[i]] = o;
            }
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                if ( constr.isTemporal() ) {
                    // if a constraint already exists, calculate the intersection
                    Declaration[] decs = constr.getRequiredDeclarations();
                    // only calculate relationships to other event patterns
                    if( decs.length > 0 && decs[0].isPatternDeclaration() && decs[0].getPattern().getObjectType().isEvent() ) {
                        Declaration target = decs[0];
                        Interval interval = temporal.get( target );
                        if ( interval == null ) {
                            interval = constr.getInterval();
                            temporal.put( target,
                                          interval );
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        }
        return Collections.unmodifiableList(list);
    }

    public Object getDeclarationValue(String variableName) {
        Declaration decl = getTerminalNode().getSubRule().getOuterDeclarations().get(variableName);
        InternalFactHandle handle = get(decl);
        // need to double check, but the working memory reference is only used for resolving globals, right?
        return decl.getValue(null, handle.getObject());
    }
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    private void checkDelaying(final BuildContext context,
                               final Constraint constraint) {
        if ( constraint instanceof IntervalProviderConstraint ) {
            // variable constraints always require a single declaration
            Declaration target = constraint.getRequiredDeclarations()[0];
            if ( target.isPatternDeclaration() && target.getPattern().getObjectType().isEvent() ) {
                long uplimit = ((IntervalProviderConstraint) constraint).getInterval().getUpperBound();
                // only makes sense to add the new timer if the uplimit is not infinity (Long.MAX_VALUE)
                if( uplimit >= 0 && uplimit < Long.MAX_VALUE ) {
                    Timer timer = context.getRule().getTimer();
                    DurationTimer durationTimer = new DurationTimer( uplimit );
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                          args.length );

        int[] declIndexes = this.queryElement.getDeclIndexes();

        for ( int i = 0, length = declIndexes.length; i < length; i++ ) {
            Declaration declr = (Declaration) argTemplate[declIndexes[i]];

            Object tupleObject = leftTuple.get( declr ).getObject();

            Object o;

            if ( tupleObject instanceof DroolsQuery ) {
                // If the query passed in a Variable, we need to use it
                ArrayElementReader arrayReader = (ArrayElementReader) declr.getExtractor();
                if ( ((DroolsQuery) tupleObject).getVariables()[arrayReader.getIndex()] != null ) {
                    o = Variable.v;
                } else {
                    o = declr.getValue( workingMemory,
                                        tupleObject );
                }
            } else {
                o = declr.getValue( workingMemory,
                                    tupleObject );
            }

            args[declIndexes[i]] = o;
        }
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  • org.drools.compiler.rule.builder.dialect.DialectUtil
  • org.drools.compiler.rule.builder.dialect.java.AccumulateTemplateTest
  • org.drools.compiler.rule.builder.dialect.java.JavaAccumulateBuilder
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  • org.drools.compiler.rule.builder.dialect.mvel.MVELAccumulateBuilder
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  • org.drools.compiler.rule.builder.dialect.mvel.MVELEvalBuilderTest
  • org.drools.compiler.rule.builder.dialect.mvel.MVELPredicateBuilderTest
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