Package org.drools.core.rule

Examples of org.drools.core.rule.GroupElement

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            }
        }

        public boolean requiresLeftActivation(final BuildUtils utils,
                                              final RuleConditionElement rce) {
            final GroupElement and = (GroupElement) rce;

            // need to check this because in the case of an empty rule, the root AND
            // 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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         */
        public void build(final BuildContext context,
                          final BuildUtils utils,
                          final RuleConditionElement rce) {
            boolean existSubNetwort = false;
            final GroupElement not = (GroupElement) rce;

            // 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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         */
        public void build(final BuildContext context,
                          final BuildUtils utils,
                          final RuleConditionElement rce) {
            boolean existSubNetwort = false;
            final GroupElement exists = (GroupElement) rce;

            // 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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    }

    private GroupElement getExtendedLhs(RuleImpl rule,
                                        GroupElement fromChild) {
        //combine rules LHS with Parent "Extends"
        final GroupElement lhs = rule.lhsRoot.cloneOnlyGroup();
        //use the children passed from prior child rules, and combine with current LHS (at the end)
        if ( null != fromChild ) {
            //Have GroupElement from a child rule, so combine it
            lhs.getChildren().addAll( fromChild.getChildren() );
        }
        //move recursively up the tree
        if ( rule.parent != null ) {
            return getExtendedLhs( rule.parent,
                                   lhs );
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                           builder,
                           "" );
        assertEquals( 0,
                      builder.getErrors().getErrors().length );

        final GroupElement lhs = rule.getLhs();
        assertLength( 1,
                      lhs.getChildren() );

        final GroupElement not = (GroupElement) lhs.getChildren().get( 0 );
        assertLength( 1,
                      not.getChildren() );
        final Pattern pattern = (Pattern) not.getChildren().get( 0 );
    }
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                           builder,
                           "" );
        assertEquals( 0,
                      builder.getErrors().getErrors().length );

        final GroupElement lhs = rule.getLhs();
        assertLength( 1,
                      lhs.getChildren() );

        final GroupElement exists = (GroupElement) lhs.getChildren().get( 0 );
        assertLength( 1,
                      exists.getChildren() );
        final Pattern pattern = (Pattern) exists.getChildren().get( 0 );
    }
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                                      builder,
                                      "update(stilton);" );
        assertLength( 0,
                      builder.getErrors().getErrors() );

        final GroupElement lhs = rule.getLhs();
        assertLength( 1,
                      lhs.getChildren() );

        final GroupElement or = (GroupElement) lhs.getChildren().get( 0 );
        assertLength( 1,
                      or.getChildren() );
        final Pattern pattern = (Pattern) or.getChildren().get( 0 );
    }
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                                      builder,
                                      "update(stilton);" );
        assertLength( 0,
                      builder.getErrors().getErrors() );

        final GroupElement lhs = rule.getLhs();
        assertLength( 1,
                      lhs.getChildren() );

        final GroupElement and = (GroupElement) lhs.getChildren().get( 0 );
        assertLength( 1,
                      and.getChildren() );
        final Pattern pattern = (Pattern) and.getChildren().get( 0 );
    }
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            Pattern prefixPattern = null;
            if ( context.getRuleDescr() instanceof QueryDescr ) {
                prefixPattern = context.getDialect().getQueryBuilder().build( context,
                                                                              (QueryDescr) context.getRuleDescr() );
            }
            final GroupElement ce = (GroupElement) builder.build( context,
                                                                  ruleDescr.getLhs(),
                                                                  prefixPattern );

            context.getRule().setLhs( ce );
        } else {
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        notPathPattern.addConstraint( getBoundVariableConstraint( notPathPattern,
                                                                  "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,
                                                      this.chosenType );

        notChosenPattern.addConstraint( getBoundVariableConstraint( notChosenPattern,
                                                                    "id",
                                                                    seatingIdDeclaration,
                                                                    "==" ) );

        notChosenPattern.addConstraint( getBoundVariableConstraint( notChosenPattern,
                                                                    "guestName",
                                                                    leftGuestNameDeclaration,
                                                                    "==" ) );

        notChosenPattern.addConstraint( getBoundVariableConstraint( notChosenPattern,
                                                                    "hobby",
                                                                    rightGuestHobbyDeclaration,
                                                                    "==" ) );

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

        rule.addPattern( notChosen );

        // ------------
        // int newSeat = rightSeat + 1;
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Related Classes of org.drools.core.rule.GroupElement

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  • org.drools.compiler.compiler.PackageBuilderTest
  • org.drools.compiler.rule.builder.ConditionalBranchBuilder
  • org.drools.compiler.rule.builder.dialect.java.RuleBuilderTest
  • org.drools.compiler.rule.builder.dialect.mvel.MVELConsequenceBuilderTest
  • org.drools.compiler.rule.builder.GroupElementBuilder
  • org.drools.compiler.rule.builder.RuleBuilder
  • org.drools.core.common.DroolsObjectIOTest
  • org.drools.core.definitions.rule.impl.RuleImpl
  • org.drools.core.examples.manners.BaseMannersTest
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