org.apache.lens.server.query.constraint

Class TotalQueryCostCeilingConstraint

java.lang.Object

org.apache.lens.server.query.constraint.TotalQueryCostCeilingConstraint

All Implemented Interfaces:

QueryLaunchingConstraint

public class TotalQueryCostCeilingConstraint
extends Object
implements QueryLaunchingConstraint

Constructor Summary

Constructors

Constructor and Description
TotalQueryCostCeilingConstraint(com.google.common.base.Optional<QueryCost> totalQueryCostCeilingPerUser)

Method Summary

Modifier and Type	Method and Description
String	allowsLaunchOf(QueryContext candidateQuery, EstimatedImmutableQueryCollection launchedQueries) This constraint allows a query to be launched by the user, if total query cost of launched queries of the user is less than or equal to the total query cost ceiling per user OR the total query cost ceiling per user is not present.
boolean	equals(Object o)
int	hashCode()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TotalQueryCostCeilingConstraint

public TotalQueryCostCeilingConstraint(@NonNull
                                       com.google.common.base.Optional<QueryCost> totalQueryCostCeilingPerUser)

Method Detail

allowsLaunchOf

public String allowsLaunchOf(QueryContext candidateQuery,
                             EstimatedImmutableQueryCollection launchedQueries)

This constraint allows a query to be launched by the user, if total query cost of launched queries of the user is less than or equal to the total query cost ceiling per user OR the total query cost ceiling per user is not present.

Specified by:

allowsLaunchOf in interface QueryLaunchingConstraint

Parameters:

candidateQuery - The query which is the next candidate to be launched.

launchedQueries - Current launched queries

Returns:

equals

@Generated(value="lombok")
public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

@Generated(value="lombok")
public int hashCode()

Overrides:

hashCode in class Object