simpledb

Class CostCard

java.lang.Object

simpledb.CostCard

public class CostCard
extends java.lang.Object

Class returned by JoinOptimizer.computeCostAndCardOfSubplan(java.util.HashMap<java.lang.String, simpledb.TableStats>, java.util.HashMap<java.lang.String, java.lang.Double>, simpledb.LogicalJoinNode, java.util.Set<simpledb.LogicalJoinNode>, double, simpledb.PlanCache) specifying the cost and cardinality of the optimal plan represented by plan.

Field Summary

Fields

Modifier and Type	Field and Description
int	card The cardinality of the optimal subplan
double	cost The cost of the optimal subplan
java.util.Vector<LogicalJoinNode>	plan The optimal subplan

Constructor Summary

Constructors

Constructor and Description
CostCard()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

cost

public double cost

The cost of the optimal subplan

card

public int card

The cardinality of the optimal subplan

plan

public java.util.Vector<LogicalJoinNode> plan

The optimal subplan

Constructor Detail

CostCard

public CostCard()