Package org.apache.pig.newplan

Interface Summary

OperatorPlan

An interface that defines graph operations on plans.

Class Summary

BaseOperatorPlan
DependencyOrderWalker	A walker to walk graphs in dependency order.
DepthFirstWalker	Do a depth first traversal of the graph.
DotPlanDumper	This class puts everything that is needed to dump a plan in a format readable by graphviz's dot algorithm.
FilterExtractor	This is a rewrite of PColFilterExtractor We traverse the expression plan bottom up and separate it into two plans - pushdownExprPlan, plan that can be pushed down to the loader and - filterExprPlan, remaining plan that needs to be evaluated by pig
Operator
OperatorSubPlan	Class to represent a view of a plan.
PlanDumper	This class dumps a nested plan to a print stream.
PlanEdge
PlanVisitor	A visitor mechanism for navigating and operating on a plan of Operators.
PlanWalker
ReverseDependencyOrderWalker	Visit a plan in the reverse of the dependency order.
ReverseDependencyOrderWalkerWOSeenChk	Visit a plan in the reverse of the dependency order.
SubtreeDependencyOrderWalker