com.espertech.esper.core.service
Class UpdateDispatchViewBlockingSpin

java.lang.Object
  com.espertech.esper.view.ViewSupport
      com.espertech.esper.core.service.UpdateDispatchViewBase
          com.espertech.esper.core.service.UpdateDispatchViewBlockingSpin

All Implemented Interfaces:

UpdateDispatchView, Dispatchable, EventCollection, View, Viewable, java.lang.Iterable<EventBean>

public class UpdateDispatchViewBlockingSpin
extends UpdateDispatchViewBase

Convenience view for dispatching view updates received from a parent view to update listeners via the dispatch service.

Field Summary

Fields inherited from class com.espertech.esper.core.service.UpdateDispatchViewBase

dispatchService, isDispatchWaiting, lastIterableEvent, statementResultService

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

EMPTY_VIEW_ARRAY, parent

Constructor Summary

UpdateDispatchViewBlockingSpin(StatementResultService statementResultService, DispatchService dispatchService, long msecTimeout, TimeSourceService timeSourceService)
Ctor.

Method Summary

void	newResult(UniformPair<EventBean[]> result) Convenience method that accepts a pair of new and old data as this is the most treated unit.
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.core.service.UpdateDispatchViewBase

clear, execute, getEventType, getStatementResultService, iterator

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

Methods inherited from interface com.espertech.esper.view.View

getParent, setParent

Methods inherited from interface com.espertech.esper.view.Viewable

addView, getViews, hasViews, removeAllViews, removeView

Constructor Detail

UpdateDispatchViewBlockingSpin

public UpdateDispatchViewBlockingSpin(StatementResultService statementResultService,
                                      DispatchService dispatchService,
                                      long msecTimeout,
                                      TimeSourceService timeSourceService)

Ctor.

Parameters:

dispatchService - - for performing the dispatch

msecTimeout - - timeout for preserving dispatch order through blocking

statementResultService - - handles result delivery

timeSourceService - time source provider

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.

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

newResult

public void newResult(UniformPair<EventBean[]> result)

Description copied from interface: UpdateDispatchView

Convenience method that accepts a pair of new and old data as this is the most treated unit.

Parameters:

result - is new data (insert stream) and old data (remove stream)