org.apache.hadoop.hive.ql.wm

Class TriggerExpression

java.lang.Object

org.apache.hadoop.hive.ql.wm.TriggerExpression

All Implemented Interfaces:

Expression

public class TriggerExpression
extends Object
implements Expression

Simple trigger expression for a rule.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.hive.ql.wm.Expression

Expression.Builder, Expression.Predicate

Constructor Summary

Constructors

Constructor and Description
TriggerExpression(CounterLimit counter, Expression.Predicate predicate)

Method Summary

Modifier and Type	Method and Description
Expression	clone() Return cloned copy of this expression.
boolean	equals(Object other)
boolean	evaluate(long current) Evaluate current value against this expression.
CounterLimit	getCounterLimit() Return counter limit
Expression.Predicate	getPredicate() Return predicate defined in the expression.
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

TriggerExpression

public TriggerExpression(CounterLimit counter,
                         Expression.Predicate predicate)

Method Detail

evaluate

public boolean evaluate(long current)

Description copied from interface: Expression

Evaluate current value against this expression. Return true if expression evaluates to true (current > limit) else false otherwise

Specified by:

evaluate in interface Expression

Parameters:

current - - current value against which expression will be evaluated

Returns:

true if current value exceeds limit

getCounterLimit

public CounterLimit getCounterLimit()

Description copied from interface: Expression

Return counter limit

Specified by:

getCounterLimit in interface Expression

Returns:

counter limit

getPredicate

public Expression.Predicate getPredicate()

Description copied from interface: Expression

Return predicate defined in the expression.

Specified by:

getPredicate in interface Expression

Returns:

predicate

clone

public Expression clone()

Description copied from interface: Expression

Return cloned copy of this expression.

Specified by:

clone in interface Expression

Overrides:

clone in class Object

Returns:

cloned copy

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object