Package org.apache.vxquery.compiler.rewriter.rules

Class Summary

Class	Description
AbstractCollectionRule
AbstractRemoveRedundantTypeExpressionsRule
AbstractUsedVariablesProcessingRule	The AbstractUsedVariablesProcessingRule provides a frame work to track used variables to assist in some rewrite rules that must track used variables in the above plan.
AbstractVXQueryAggregateRule
CollectionFileDomain
ConsolidateAssignAggregateRule	The rule searches for assign operator with an aggregate function expression immediately following an aggregate operator with a sequence expression.
ConsolidateDescandantChild	The rule searches for assign operator with an aggregate function expression immediately following an aggregate operator with a sequence expression.
ConsolidateUnnestsRule	The rule searches for an unnest operator (1) immediately following an unnest operator (2).
ConvertAssignSortDistinctNodesToOperatorsRule
ConvertAssignToAggregateRule	The rule searches for assign operators that have a xquery aggregate function.
ConvertAssignToUnnestRule	The rule searches for unnest(iterate) operator followed by an assign(child) operator and merges the assign into the unnest operator.
ConvertFromAlgebricksExpressionsRule	The rule searches for where the Algebricks builtin function are temporarly in the plan in place of XQuery function.
ConvertToAlgebricksExpressionsRule	The rule searches for where the XQuery function are used in place of Algebricks builtin function.
EliminateSubplanForSingleItemsRule	The rule searches for subplans that only have one item per tuple.
EliminateSubplanForSinglePathsRule	The rule searches for subplans that only have one path of execution.
EliminateUnnestAggregateSequencesRule	The rule searches for unnest followed by an aggregate operator with a sequence function and converts the aggregate operator to an assign.
EliminateUnnestAggregateSubplanRule	The rule searches for unnest followed by subplan with the root operator an aggregate and removes the aggregate subplan.
IntroduceCollectionRule	Find the default query plan created for collection and updated it to use parallelization.
IntroduceTwoStepAggregateRule	The rule searches for aggregate operators with an aggregate function expression that has not been initialized for two step aggregation.
PushChildIntoDataScanRule	The rule searches for an unnest operator immediately following a data scan operator.
PushFunctionsOntoEqJoinBranches
RemoveRedundantBooleanExpressionsRule	The rule searches for where the xquery boolean function is used.
RemoveRedundantCastExpressionsRule	The rule searches for where the xquery cast function is used.
RemoveRedundantDataExpressionsRule	The rule searches for where the xquery data function is used.
RemoveRedundantPromoteExpressionsRule	The rule searches for where the xquery promote function is used.
RemoveRedundantTreatExpressionsRule	The rule searches for where the xquery treat function is used.
RemoveUnusedSortDistinctNodesRule	The rule searches for where the xquery sort distinct function is used and determines if the sort and distinct is necessary.
RemoveUnusedUnnestIterateRule	The rule searches for an unnest operator (1) immediately following an unnest or data scan operator (2).
ReplaceSourceMapInDocExpression	The rule searches for where the function_doc1 function is in the plan in place of XQuery function.
SetCollectionDataSourceRule	Find the collection functions and generate the data source objects.
SetVariableIdContextRule	Set the default context for the variable id in the optimization context.