Package org.apache.pig.impl.plan.optimizer

Class Summary

CommonNodeFinder
PlanOptimizer<O extends Operator,P extends OperatorPlan<O>>	A class to optimize plans.
Rule<O extends Operator,P extends OperatorPlan<O>>	A rule for optimizing a plan.
RuleMatcher<O extends Operator,P extends OperatorPlan<O>>	RuleMatcher contains the logic to determine whether a given rule matches.
RuleOperator	Parent for all Logical operators.
RulePlan
RulePlanPrinter	A visitor mechanism printing out the logical plan.
RulePlanVisitor
Transformer<O extends Operator,P extends OperatorPlan<O>>	Transformer represents one tranform that the optimizer can apply to a graph.

Enum Summary

Rule.WalkerAlgo
RuleOperator.NodeType

Exception Summary

OptimizerException