org.apache.pig.pen

Class EquivalenceClasses

java.lang.Object

org.apache.pig.pen.EquivalenceClasses

public class EquivalenceClasses
extends Object

Constructor Summary

Constructors

Constructor and Description
EquivalenceClasses()

Method Summary

Modifier and Type	Method and Description
static Map<LogicalRelationalOperator,Collection<IdentityHashSet<Tuple>>>	getLoToEqClassMap(PhysicalPlan plan, LogicalPlan lp, Map<Operator,PhysicalOperator> logToPhyMap, Map<Operator,DataBag> logToDataMap, Map<LOForEach,Map<LogicalRelationalOperator,PhysicalOperator>> forEachInnerLogToPhyMap, HashMap<PhysicalOperator,Collection<IdentityHashSet<Tuple>>> poToEqclassesMap)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EquivalenceClasses

public EquivalenceClasses()

Method Detail

getLoToEqClassMap

public static Map<LogicalRelationalOperator,Collection<IdentityHashSet<Tuple>>> getLoToEqClassMap(PhysicalPlan plan,
                                                                                                  LogicalPlan lp,
                                                                                                  Map<Operator,PhysicalOperator> logToPhyMap,
                                                                                                  Map<Operator,DataBag> logToDataMap,
                                                                                                  Map<LOForEach,Map<LogicalRelationalOperator,PhysicalOperator>> forEachInnerLogToPhyMap,
                                                                                                  HashMap<PhysicalOperator,Collection<IdentityHashSet<Tuple>>> poToEqclassesMap)