Examples of org.drools.core.rule.Rule.addPattern()

org.drools.core.rule.Rule.addPattern()
Add a pattern to the rule. All patterns are searched for bindings which are then added to the rule as declarations @param element The Test to add. @throws InvalidRuleException

        // -----------
        final Pattern guestPattern = new Pattern( 1,
                                                  this.guestType,
                                                  "guest" );


        rule.addPattern( guestPattern );


        final Declaration guestDeclaration = rule.getDeclaration( "guest" );


        // ------------
        // count : Count()

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        // ------------
        final Pattern countPattern = new Pattern( 2,
                                                  this.countType,
                                                  "count" );


        rule.addPattern( countPattern );


        final Declaration countDeclaration = rule.getDeclaration( "count" );


        final Consequence consequence = new Consequence() {

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


        rule.addPattern( contextPattern );


        final Declaration contextDeclaration = rule.getDeclaration( "context" );


        // -------------------------------
        // Seating( seatingId:id, seatingPid:pid, pathDone == true

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        setFieldDeclaration( seatingPattern,
                             "rightGuestName",
                             "seatingRightGuestName" );


        rule.addPattern( seatingPattern );


        final Declaration seatingIdDeclaration = rule.getDeclaration( "seatingId" );
        final Declaration seatingPidDeclaration = rule.getDeclaration( "seatingPid" );
        final Declaration seatingRightGuestNameDeclaration = rule.getDeclaration( "seatingRightGuestName" );
        final Declaration seatingRightSeatDeclaration = rule.getDeclaration( "seatingRightSeat" );

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        setFieldDeclaration( rightGuestPattern,
                             "hobby",
                             "rightGuestHobby" );


        rule.addPattern( rightGuestPattern );


        final Declaration rightGuestSexDeclaration = rule.getDeclaration( "rightGuestSex" );
        final Declaration rightGuestHobbyDeclaration = rule.getDeclaration( "rightGuestHobby" );


        // ----------------

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        leftGuestPattern.addConstraint( getBoundVariableConstraint( leftGuestPattern,
                                                                    "sex",
                                                                    rightGuestSexDeclaration,
                                                                    "!=" ) );


        rule.addPattern( leftGuestPattern );
        final Declaration leftGuestNameDeclaration = rule.getDeclaration( "leftGuestName" );


        // ---------------
        // count : Count()
        // ---------------

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        // ---------------
        final Pattern count = new Pattern( 4,
                                           this.countType,
                                           "count" );


        rule.addPattern( count );


        final Declaration countDeclaration = rule.getDeclaration( "count" );


        // --------------
        // not ( Path( id == seatingId, guestName == leftGuestName) )

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                                                                  "guestName",
                                                                  leftGuestNameDeclaration,
                                                                  "==" ) );
        final GroupElement notPath = GroupElementFactory.newNotInstance();
        notPath.addChild( notPathPattern );
        rule.addPattern( notPath );
        // ------------
        // not ( Chosen( id == seatingId, guestName == leftGuestName, hobby ==
        // rightGuestHobby ) )
        // ------------
        final Pattern notChosenPattern = new Pattern( 6,

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                                                                    "==" ) );


        final GroupElement notChosen = GroupElementFactory.newNotInstance();
        notChosen.addChild( notChosenPattern );


        rule.addPattern( notChosen );


        // ------------
        // int newSeat = rightSeat + 1;
        // drools.assert( new Seating( coung.getValue(), rightSeat,
        // rightSeatName, leftGuestName, newSeat, countValue, id, false );

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


        rule.addPattern( contextPattern );


        // ---------------
        // Seating( seatingId:id, seatingPid:pid, pathDone == false )
        // ---------------
        final Pattern seatingPattern = new Pattern( 1,

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