Package com.apple.foundationdb.record.query.plan.temp

Class CascadesCostModel

java.lang.Object

com.apple.foundationdb.record.query.plan.temp.CascadesCostModel

All Implemented Interfaces:

Comparator<RelationalExpression>

@API(EXPERIMENTAL)
public class CascadesCostModel
extends Object
implements Comparator<RelationalExpression>

A comparator implementing the current heuristic cost model for the CascadesPlanner.

Constructor Summary

Constructors

Constructor	Description
CascadesCostModel(RecordQueryPlannerConfiguration configuration, PlanContext planContext)

Method Summary

Modifier and Type	Method	Description
int	compare(RelationalExpression a, RelationalExpression b)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

CascadesCostModel

public CascadesCostModel(@Nonnull
                         RecordQueryPlannerConfiguration configuration,
                         @Nonnull
                         PlanContext planContext)

Method Detail

compare

public int compare(@Nonnull
                   RelationalExpression a,
                   @Nonnull
                   RelationalExpression b)

Specified by:

compare in interface Comparator<RelationalExpression>