com.espertech.esper.pattern.guard

Class TimerWithinOrMaxCountGuardFactory

java.lang.Object

com.espertech.esper.pattern.guard.TimerWithinOrMaxCountGuardFactory

All Implemented Interfaces:

GuardFactory, MetaDefItem, Serializable

public class TimerWithinOrMaxCountGuardFactory
extends Object
implements GuardFactory, MetaDefItem, Serializable

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected MatchedEventConvertor	convertor For converting matched-events maps to events-per-stream.
protected ExprNode	numCountToExpr Number of count-to max.
protected ExprNode	timeExpr Number of milliseconds.

Constructor Summary

Constructors

Constructor and Description
TimerWithinOrMaxCountGuardFactory()

Method Summary

Modifier and Type	Method and Description
int	computeNumCountTo(MatchedEventMap beginState, PatternAgentInstanceContext context)
long	computeTime(MatchedEventMap beginState, PatternAgentInstanceContext context)
Guard	makeGuard(PatternAgentInstanceContext context, MatchedEventMap beginState, Quitable quitable, EvalStateNodeNumber stateNodeId, Object guardState) Constructs a guard instance.
void	setGuardParameters(List<ExprNode> parameters, MatchedEventConvertor convertor) Sets the guard object parameters.

Methods inherited from class java.lang.Object

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

Field Detail

timeExpr

protected ExprNode timeExpr

Number of milliseconds.

numCountToExpr

protected ExprNode numCountToExpr

Number of count-to max.

convertor

protected transient MatchedEventConvertor convertor

For converting matched-events maps to events-per-stream.

Constructor Detail

TimerWithinOrMaxCountGuardFactory

public TimerWithinOrMaxCountGuardFactory()

Method Detail

setGuardParameters

public void setGuardParameters(List<ExprNode> parameters,
                               MatchedEventConvertor convertor)
                        throws GuardParameterException

Description copied from interface: GuardFactory

Sets the guard object parameters.

Specified by:

setGuardParameters in interface GuardFactory

Parameters:

parameters - is a list of parameters

convertor - for converting a

Throws:

GuardParameterException - thrown to indicate a parameter problem

computeTime

public long computeTime(MatchedEventMap beginState,
                        PatternAgentInstanceContext context)

computeNumCountTo

public int computeNumCountTo(MatchedEventMap beginState,
                             PatternAgentInstanceContext context)

makeGuard

public Guard makeGuard(PatternAgentInstanceContext context,
                       MatchedEventMap beginState,
                       Quitable quitable,
                       EvalStateNodeNumber stateNodeId,
                       Object guardState)

Description copied from interface: GuardFactory

Constructs a guard instance.

Specified by:

makeGuard in interface GuardFactory

Parameters:

context - - services for use by guard

beginState - - the prior matching events

quitable - - to use for indicating the guard has quit

stateNodeId - - a node id for the state object

guardState - - state node for guard

Returns:

guard instance