Package org.drools.core.rule

Examples of org.drools.core.rule.Pattern.addConstraint()

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        // -------------
        final Pattern seatingPattern = new Pattern( 2,
                                                    this.seatingType,
                                                    null );

        seatingPattern.addConstraint( getBoundVariableConstraint( seatingPattern,
                                                                  "rightSeat",
                                                                  lastSeatDeclaration,
                                                                  "==" ) );

        rule.addPattern( seatingPattern );
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        // -----------
        final Pattern contextPattern = new Pattern( 0,
                                                    this.contextType,
                                                    "context" );

        contextPattern.addConstraint( getLiteralConstraint( contextPattern,
                                                            "state",
                                                            Context.CHECK_DONE ) );

        rule.addPattern( contextPattern );
        final Declaration contextDeclaration = rule.getDeclaration( "context" );
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        // context : Context( state == Context.PRINT_RESULTS )
        // -----------
        final Pattern contextPattern = new Pattern( 0,
                                                    this.contextType );

        contextPattern.addConstraint( getLiteralConstraint( contextPattern,
                                                            "state",
                                                            Context.PRINT_RESULTS ) );

        rule.addPattern( contextPattern );
        final Declaration contextDeclaration = rule.getDeclaration( "context" );
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        final QueryNameConstraint constraint = new QueryNameConstraint(extractor, queryDescr.getName());

        PatternBuilder.registerReadAccessor( context, queryObjectType, "name", constraint );

        // adds appropriate constraint to the pattern
        pattern.addConstraint( constraint );

        ObjectType argsObjectType = ClassObjectType.DroolsQuery_ObjectType;
       
        InternalReadAccessor arrayExtractor = PatternBuilder.getFieldReadAccessor( context, queryDescr, argsObjectType, "elements", null, true );
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        final QueryNameConstraint constraint = new QueryNameConstraint(extractor, queryDescr.getName());

        PatternBuilder.registerReadAccessor( context, queryObjectType, "name", constraint );

        // adds appropriate constraint to the pattern
        pattern.addConstraint( constraint );

        ObjectType argsObjectType = ClassObjectType.DroolsQuery_ObjectType;
       
        InternalReadAccessor arrayExtractor = PatternBuilder.getFieldReadAccessor( context, queryDescr, argsObjectType, "elements", null, true );
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