Examples of EliminateSubplanForSingleItemsRule

org.apache.vxquery.compiler.rewriter.rules.EliminateSubplanForSingleItemsRule

The rule searches for subplans that only have one item per tuple.

 Before %PARENT_PLAN SUBPLAN{ AGGREGATE($v2, sequence(%expression($v1)) ) UNNEST($v1, iterate($v0) ) NESTEDTUPLESOURCE } %CHILD_PLAN Where |$v0| == 1 After  %PARENT_PLAN ASSIGN($v2, %expression($v0) ) %CHILD_PLAN

@author prestonc

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

        // Adds child steps to the data source scan.
        normalization.add(new ConsolidateUnnestsRule());
        normalization.add(new PushChildIntoDataScanRule());


        // Improvement for scalar child expressions
        normalization.add(new EliminateSubplanForSingleItemsRule());
        return normalization;
    }

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

        // Adds child steps to the data source scan.
        normalization.add(new ConsolidateUnnestsRule());
        normalization.add(new PushChildIntoDataScanRule());


        // Improvement for scalar child expressions
        normalization.add(new EliminateSubplanForSingleItemsRule());
        return normalization;
    }

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