Package com.espertech.esper.common.internal.epl.rowrecog.state

Class RowRecogStateRandomAccessImpl

java.lang.Object

com.espertech.esper.common.internal.epl.rowrecog.state.RowRecogStateRandomAccessImpl

All Implemented Interfaces:

RowRecogStateRandomAccess

public class RowRecogStateRandomAccessImpl
extends Object
implements RowRecogStateRandomAccess

"Prev" state for random access to event history.

Field Summary

Fields inherited from interface com.espertech.esper.common.internal.epl.rowrecog.state.RowRecogStateRandomAccess

EPTYPE

Constructor Summary

Constructors

Constructor	Description
RowRecogStateRandomAccessImpl(RowRecogPreviousStrategyImpl getter)	Ctor.

Method Summary

Modifier and Type	Method	Description
void	existingEventPrepare(EventBean newEvent)	Prepare relative to existing event, for iterating.
EventBean	getPreviousEvent(int assignedRelativeIndex)	Returns a previous event.
boolean	isEmpty()	Returns true for empty collection.
void	newEventPrepare(EventBean newEvent)	Add new event.
void	remove(EventBean oldEvent)	Remove event.
void	remove(EventBean[] oldEvents)	Remove events.

Methods inherited from class java.lang.Object

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

Constructor Details

RowRecogStateRandomAccessImpl

public RowRecogStateRandomAccessImpl(RowRecogPreviousStrategyImpl getter)

Ctor.

Parameters:

getter - for access

Method Details

newEventPrepare

public void newEventPrepare(EventBean newEvent)

Add new event.

Specified by:

newEventPrepare in interface RowRecogStateRandomAccess

Parameters:

newEvent - to add

existingEventPrepare

public void existingEventPrepare(EventBean newEvent)

Prepare relative to existing event, for iterating.

Specified by:

existingEventPrepare in interface RowRecogStateRandomAccess

Parameters:

newEvent - to consider for index

getPreviousEvent

public EventBean getPreviousEvent(int assignedRelativeIndex)

Returns a previous event. Always immediatly preceded by #newEventPrepare.

Specified by:

getPreviousEvent in interface RowRecogStateRandomAccess

Parameters:

assignedRelativeIndex - index

Returns:

event

remove

public void remove(EventBean[] oldEvents)

Remove events.

Specified by:

remove in interface RowRecogStateRandomAccess

Parameters:

oldEvents - to remove

remove

public void remove(EventBean oldEvent)

Remove event.

Specified by:

remove in interface RowRecogStateRandomAccess

Parameters:

oldEvent - to remove

isEmpty

public boolean isEmpty()

Returns true for empty collection.

Specified by:

isEmpty in interface RowRecogStateRandomAccess

Returns:

indicator if empty