com.espertech.esper.rowregex
Class EventRowRegexNFAView

java.lang.Object
  com.espertech.esper.view.ViewSupport
      com.espertech.esper.rowregex.EventRowRegexNFAView

All Implemented Interfaces:

EventRowRegexNFAViewService, StopCallback, EventCollection, View, Viewable, java.lang.Iterable<EventBean>

public class EventRowRegexNFAView
extends ViewSupport
implements StopCallback, EventRowRegexNFAViewService

View for match recognize support.

Field Summary

Fields inherited from class com.espertech.esper.view.ViewSupport

EMPTY_VIEW_ARRAY, parent

Constructor Summary

EventRowRegexNFAView(EventRowRegexNFAViewFactory factory, ObjectArrayEventType compositeEventType, EventType rowEventType, MatchRecognizeSpec matchRecognizeSpec, java.util.LinkedHashMap<java.lang.String,Pair<java.lang.Integer,java.lang.Boolean>> variableStreams, java.util.Map<java.lang.Integer,java.lang.String> streamsVariables, java.util.Set<java.lang.String> variablesSingle, AgentInstanceContext agentInstanceContext, java.util.TreeMap<java.lang.Integer,java.util.List<ExprPreviousMatchRecognizeNode>> callbacksPerIndex, AggregationServiceMatchRecognize aggregationService, boolean isDefineAsksMultimatches, ObjectArrayBackedEventBean defineMultimatchEventBean, boolean[] isExprRequiresMultimatchState, boolean isUnbound, boolean isIterateOnly, boolean isCollectMultimatches, RowRegexExprNode expandedPatternNode)
Ctor.

Method Summary

void	accept(EventRowRegexNFAViewServiceVisitor visitor)
EventType	getEventType() Provides metadata information about the type of object the event collection contains.
EventRowRegexNFAViewFactory	getFactory()
RegexExprPreviousEvalStrategy	getPreviousEvaluationStrategy()
void	init(EventBean[] newEvents)
java.util.Iterator<EventBean>	iterator() Allows iteration through all elements in this event collection.
void	stop() Stops the underlying resources.
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.view.ViewSupport

addView, addView, dumpChildViews, dumpUpdateParams, dumpUpdateParams, findDescendent, findViewIndex, getParent, getViews, hasViews, removeAllViews, removeView, removeView, setParent, updateChildren, updateChildren

Methods inherited from class java.lang.Object

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

Constructor Detail

EventRowRegexNFAView

public EventRowRegexNFAView(EventRowRegexNFAViewFactory factory,
                            ObjectArrayEventType compositeEventType,
                            EventType rowEventType,
                            MatchRecognizeSpec matchRecognizeSpec,
                            java.util.LinkedHashMap<java.lang.String,Pair<java.lang.Integer,java.lang.Boolean>> variableStreams,
                            java.util.Map<java.lang.Integer,java.lang.String> streamsVariables,
                            java.util.Set<java.lang.String> variablesSingle,
                            AgentInstanceContext agentInstanceContext,
                            java.util.TreeMap<java.lang.Integer,java.util.List<ExprPreviousMatchRecognizeNode>> callbacksPerIndex,
                            AggregationServiceMatchRecognize aggregationService,
                            boolean isDefineAsksMultimatches,
                            ObjectArrayBackedEventBean defineMultimatchEventBean,
                            boolean[] isExprRequiresMultimatchState,
                            boolean isUnbound,
                            boolean isIterateOnly,
                            boolean isCollectMultimatches,
                            RowRegexExprNode expandedPatternNode)

Ctor.

Parameters:

compositeEventType - final event type

rowEventType - event type for input rows

matchRecognizeSpec - specification

variableStreams - variables and their assigned stream number

streamsVariables - stream number and the assigned variable

variablesSingle - single variables

callbacksPerIndex - for handling the 'prev' function

aggregationService - handles aggregations

isUnbound - true if unbound stream

isIterateOnly - true for iterate-only

isCollectMultimatches - if asking for multimatches

Method Detail

stop

public void stop()

Description copied from interface: StopCallback

Stops the underlying resources.

Specified by:

stop in interface StopCallback

init

public void init(EventBean[] newEvents)

Specified by:

init in interface EventRowRegexNFAViewService

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

getEventType

public EventType getEventType()

Description copied from interface: EventCollection

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

Specified by:

getEventType in interface EventCollection

Returns:

metadata for the objects in the collection

iterator

public java.util.Iterator<EventBean> iterator()

Description copied from interface: EventCollection

Allows iteration through all elements in this event collection. 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 EventCollection

Specified by:

iterator in interface java.lang.Iterable<EventBean>

Returns:

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

accept

public void accept(EventRowRegexNFAViewServiceVisitor visitor)

Specified by:

accept in interface EventRowRegexNFAViewService

getPreviousEvaluationStrategy

public RegexExprPreviousEvalStrategy getPreviousEvaluationStrategy()

Specified by:

getPreviousEvaluationStrategy in interface EventRowRegexNFAViewService

getFactory

public EventRowRegexNFAViewFactory getFactory()