Examples of EliminateUnnestAggregateSequencesRule

org.apache.vxquery.compiler.rewriter.rules.EliminateUnnestAggregateSequencesRule

The rule searches for unnest followed by an aggregate operator with a sequence function and converts the aggregate operator to an assign.

 Before plan__parent UNNEST( $v2 : iterate( $v1 ) ) AGGREGATE( $v1 : sequence( $v0 ) ) plan__child where plan__parent does not use $v1 and $v0 is defined in plan__child. After plan__parent UNNEST( $v2 : iterate( $v1 ) ) ASSIGN( $v1 : $v0 ) plan__child

@author prestonc

Examples of org.apache.vxquery.compiler.rewriter.rules.EliminateUnnestAggregateSequencesRule

        normalization.add(new RemoveUnusedAssignAndAggregateRule());


        // Remove single tuple input subplans and merge unnest aggregate operators.
        // TODO Fix EliminateSubplanForSinglePathsRule to check for variables used after the subplan.
        //        normalization.add(new EliminateSubplanForSinglePathsRule());
        normalization.add(new EliminateUnnestAggregateSequencesRule());


        normalization.add(new ConvertAssignToUnnestRule());


        // Used to clean up any missing noops after all the subplans have been altered.
        normalization.add(new RemoveRedundantVariablesRule());

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Examples of org.apache.vxquery.compiler.rewriter.rules.EliminateUnnestAggregateSequencesRule

        normalization.add(new RemoveUnusedAssignAndAggregateRule());


        // Remove single tuple input subplans and merge unnest aggregate operators.
        // TODO Fix EliminateSubplanForSinglePathsRule to check for variables used after the subplan.
        //        normalization.add(new EliminateSubplanForSinglePathsRule());
        normalization.add(new EliminateUnnestAggregateSequencesRule());


        normalization.add(new ConvertAssignToUnnestRule());


        // Used to clean up any missing noops after all the subplans have been altered.
        normalization.add(new RemoveRedundantVariablesRule());

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