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

Class Summary

Class	Description
PartitionConditionRemover	The transformation step that does partition condition remover.
PcrExprProcCtx	The processor context for partition condition remover.
PcrExprProcFactory	Expression processor factory for partition condition removing.
PcrExprProcFactory.ColumnExprProcessor	Processor for column expressions.
PcrExprProcFactory.DefaultExprProcessor	Processor for constants and null expressions.
PcrExprProcFactory.FieldExprProcessor	FieldExprProcessor.
PcrExprProcFactory.GenericFuncExprProcessor	Processor for Generic functions If it is AND, OR or NOT, we replace the node to be the constant true or false if we are sure the result from children, or cut one of the child if we know partial results.
PcrExprProcFactory.NodeInfoWrapper
PcrOpProcFactory	PcrOpProcFactory contains processors that process expression tree of filter operators following table scan operators.
PcrOpProcFactory.DefaultPCR	Default processor which does nothing
PcrOpProcFactory.FilterPCR	Remove partition condition in a filter operator when possible.
PcrOpWalkerCtx	Context class for operator tree walker for partition condition remover.
PcrOpWalkerCtx.OpToDeleteInfo

Enum Summary

Enum	Description
PcrExprProcFactory.WalkState