Package org.apache.hadoop.hive.ql.optimizer.ppr

Class Summary
ExprProcCtx The processor context for partition pruner.
ExprProcFactory Expression processor factory for partition pruning.
ExprProcFactory.ColumnExprProcessor Processor for column expressions.
ExprProcFactory.DefaultExprProcessor Processor for constants and null expressions.
ExprProcFactory.FieldExprProcessor FieldExprProcessor.
ExprProcFactory.GenericFuncExprProcessor If all children are candidates and refer only to one table alias then this expr is a candidate else it is not a candidate but its children could be final candidates.
ExprPrunerInfo The processor context for partition pruner.
OpProcFactory Operator factory for partition pruning processing of operator graph We find all the filter operators that appear just beneath the table scan operators.
OpProcFactory.DefaultPPR Default processor which just merges its children.
OpProcFactory.FilterPPR Determines the partition pruner for the filter.
OpWalkerCtx Context class for operator tree walker for partition pruner.
PartitionPruner The transformation step that does partition pruning.
 



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