com.espertech.esper.common.internal.epl.rowrecog.core

Class RowRecogNFAView

java.lang.Object

com.espertech.esper.common.internal.view.core.ViewSupport

com.espertech.esper.common.internal.epl.rowrecog.core.RowRecogNFAView

All Implemented Interfaces:

AgentInstanceStopCallback, RowRecogNFAViewScheduleCallback, RowRecogNFAViewService, View, Viewable, Iterable<EventBean>

public class RowRecogNFAView
extends ViewSupport
implements AgentInstanceStopCallback, RowRecogNFAViewService, RowRecogNFAViewScheduleCallback

View for match recognize support.

Field Summary

Fields

Modifier and Type	Field and Description
protected AgentInstanceContext	agentInstanceContext
protected RowRecogPartitionStateRepo	regexPartitionStateRepo
protected RowRecogNFAViewScheduler	scheduler

Fields inherited from class com.espertech.esper.common.internal.view.core.ViewSupport

child, parent

Fields inherited from interface com.espertech.esper.common.internal.context.util.AgentInstanceStopCallback

INSTANCE_NO_ACTION

Constructor Summary

Constructors

Constructor and Description
RowRecogNFAView(RowRecogNFAViewFactory factory, AgentInstanceContext agentInstanceContext, RowRecogNFAViewScheduler scheduler)

Method Summary

Modifier and Type	Method and Description
void	accept(RowRecogNFAViewServiceVisitor visitor)
EventType	getEventType() Provides metadata information about the type of object the event collection contains.
RowRecogNFAViewFactory	getFactory()
RowRecogPreviousStrategy	getPreviousEvaluationStrategy()
Iterator<EventBean>	iterator() Allows iteration through all elements in this viewable.
void	stop(AgentInstanceStopServices services)
void	triggered()
void	update(EventBean[] newData, EventBean[] oldData) Notify that data has been added or removed from the Viewable parent.

Methods inherited from class com.espertech.esper.common.internal.view.core.ViewSupport

getChild, getParent, setChild, setParent

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

agentInstanceContext

protected final AgentInstanceContext agentInstanceContext

scheduler

protected final RowRecogNFAViewScheduler scheduler

regexPartitionStateRepo

protected RowRecogPartitionStateRepo regexPartitionStateRepo

Constructor Detail

RowRecogNFAView

public RowRecogNFAView(RowRecogNFAViewFactory factory,
                       AgentInstanceContext agentInstanceContext,
                       RowRecogNFAViewScheduler scheduler)

Method Detail

update

public void update(EventBean[] newData,
                   EventBean[] oldData)

Description copied from interface: View

Notify that data has been added or removed from the Viewable parent. The last object in the newData array of objects would be the newest object added to the parent view. The first object of the oldData array of objects would be the oldest object removed from the parent view.

If the call to update contains new (inserted) data, then the first argument will be a non-empty list and the second will be empty. Similarly, if the call is a notification of deleted data, then the first argument will be empty and the second will be non-empty. Either the newData or oldData will be non-null. This method won't be called with both arguments being null, but either one could be null. The same is true for zero-length arrays. Either newData or oldData will be non-empty. If both are non-empty, then the update is a modification notification.

When update() is called on a view by the parent object, the data in newData will be in the collection of the parent, and its data structures will be arranged to reflect that. The data in oldData will not be in the parent's data structures, and any access to the parent will indicate that that data is no longer there.

Specified by:

update in interface View

Parameters:

newData - is the new data that has been added to the parent view

oldData - is the old data that has been removed from the parent view

stop

public void stop(AgentInstanceStopServices services)

Specified by:

stop in interface AgentInstanceStopCallback

getEventType

public EventType getEventType()

Description copied from interface: Viewable

Provides metadata information about the type of object the event collection contains.

Specified by:

getEventType in interface Viewable

Returns:

metadata for the objects in the collection

iterator

public Iterator<EventBean> iterator()

Description copied from interface: Viewable

Allows iteration through all elements in this viewable. The iterator will return the elements in the collection in their natural order, or, if there is no natural ordering, in some unpredictable order.

Specified by:

iterator in interface Viewable

Specified by:

iterator in interface Iterable<EventBean>

Returns:

an iterator which will go through all current elements in the collection.

accept

public void accept(RowRecogNFAViewServiceVisitor visitor)

Specified by:

accept in interface RowRecogNFAViewService

triggered

public void triggered()

Specified by:

triggered in interface RowRecogNFAViewScheduleCallback

getPreviousEvaluationStrategy

public RowRecogPreviousStrategy getPreviousEvaluationStrategy()

Specified by:

getPreviousEvaluationStrategy in interface RowRecogNFAViewService

getFactory

public RowRecogNFAViewFactory getFactory()