com.espertech.esper.epl.view
Class OutputConditionPolledExpression

java.lang.Object
  com.espertech.esper.epl.view.OutputConditionPolledExpression

All Implemented Interfaces:

OutputConditionPolled

public class OutputConditionPolledExpression
extends java.lang.Object
implements OutputConditionPolled

Output condition for output rate limiting that handles when-then expressions for controlling output.

Constructor Summary

OutputConditionPolledExpression(ExprNode whenExpressionNode, java.util.List<OnTriggerSetAssignment> assignments, AgentInstanceContext agentInstanceContext)
Ctor.

Method Summary

boolean

updateOutputCondition(int newEventsCount, int oldEventsCount) Update the output condition.

Methods inherited from class java.lang.Object

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

Constructor Detail

OutputConditionPolledExpression

public OutputConditionPolledExpression(ExprNode whenExpressionNode,
                                       java.util.List<OnTriggerSetAssignment> assignments,
                                       AgentInstanceContext agentInstanceContext)
                                throws ExprValidationException

Ctor.

Parameters:

whenExpressionNode - the expression to evaluate, returning true when to output

assignments - is the optional then-clause variable assignments, or null or empty if none

Throws:

ExprValidationException - when validation fails

Method Detail

updateOutputCondition

public boolean updateOutputCondition(int newEventsCount,
                                     int oldEventsCount)

Description copied from interface: OutputConditionPolled

Update the output condition.

Specified by:

updateOutputCondition in interface OutputConditionPolled

Parameters:

newEventsCount - - number of new events incoming

oldEventsCount - - number of old events incoming