Package org.apache.pig.newplan.logical.optimizer

Class Summary

Class	Description
AllExpressionVisitor	A visitor that walks a logical plan and then applies a given LogicalExpressionVisitor to all expressions it encounters.
AllSameRalationalNodesVisitor	A visitor that walks the logical plan and calls the same method on every type of node.
LogicalPlanOptimizer
LogicalPlanPrinter	A visitor mechanism printing out the logical plan.
ProjectionPatcher	A PlanTransformListener that will patch up references in projections.
ProjectionPatcher.ProjectionFinder
SchemaPatcher	A PlanTransformListener for the logical optimizer that will patch up schemas after a plan has been transformed.
SchemaResetter
UidResetter