com.espertech.esper.epl.view
Class OutputProcessViewConditionLastAllUnord

java.lang.Object
  com.espertech.esper.epl.view.OutputProcessViewBase
      com.espertech.esper.epl.view.OutputProcessViewBaseWAfter
          com.espertech.esper.epl.view.OutputProcessViewConditionLastAllUnord

All Implemented Interfaces:

JoinSetIndicator, JoinSetProcessor, OutputProcessViewTerminable, StopCallback, EventCollection, View, Viewable, java.lang.Iterable<EventBean>

Direct Known Subclasses:

OutputProcessViewConditionLastAllUnordPostProcessAll

public class OutputProcessViewConditionLastAllUnord
extends OutputProcessViewBaseWAfter

Handles output rate limiting for LAST and without order-by.

Field Summary

Fields inherited from class com.espertech.esper.epl.view.OutputProcessViewBase

childView, joinExecutionStrategy, parentView, resultSetProcessor

Constructor Summary

OutputProcessViewConditionLastAllUnord(ResultSetProcessorHelperFactory resultSetProcessorHelperFactory, ResultSetProcessor resultSetProcessor, java.lang.Long afterConditionTime, java.lang.Integer afterConditionNumberOfEvents, boolean afterConditionSatisfied, OutputProcessViewConditionFactory parent, AgentInstanceContext agentInstanceContext)

Method Summary

protected void	continueOutputProcessingJoin(boolean doOutput, boolean forceUpdate) Called once the output condition has been met.
protected void	continueOutputProcessingView(boolean doOutput, boolean forceUpdate) Called once the output condition has been met.
int	getNumChangesetRows()
OutputCondition	getOptionalOutputCondition()
java.util.Iterator<EventBean>	iterator() Allows iteration through all elements in this event collection.
protected void	output(boolean forceUpdate, UniformPair<EventBean[]> results)
void	process(java.util.Set<MultiKey<EventBean>> newEvents, java.util.Set<MultiKey<EventBean>> oldEvents, ExprEvaluatorContext exprEvaluatorContext) This process (update) method is for participation in a join.
void	terminated()
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.epl.view.OutputProcessViewBaseWAfter

checkAfterCondition, checkAfterCondition, checkAfterCondition, stop

Methods inherited from class com.espertech.esper.epl.view.OutputProcessViewBase

addView, getEventType, getParent, getViews, hasViews, removeAllViews, removeView, setJoinExecutionStrategy, setParent

Methods inherited from class java.lang.Object

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

Constructor Detail

OutputProcessViewConditionLastAllUnord

public OutputProcessViewConditionLastAllUnord(ResultSetProcessorHelperFactory resultSetProcessorHelperFactory,
                                              ResultSetProcessor resultSetProcessor,
                                              java.lang.Long afterConditionTime,
                                              java.lang.Integer afterConditionNumberOfEvents,
                                              boolean afterConditionSatisfied,
                                              OutputProcessViewConditionFactory parent,
                                              AgentInstanceContext agentInstanceContext)

Method Detail

getNumChangesetRows

public int getNumChangesetRows()

Specified by:

getNumChangesetRows in class OutputProcessViewBase

getOptionalOutputCondition

public OutputCondition getOptionalOutputCondition()

Specified by:

getOptionalOutputCondition in class OutputProcessViewBase

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

process

public void process(java.util.Set<MultiKey<EventBean>> newEvents,
                    java.util.Set<MultiKey<EventBean>> oldEvents,
                    ExprEvaluatorContext exprEvaluatorContext)

This process (update) method is for participation in a join.

Parameters:

newEvents - - new events

oldEvents - - old events

exprEvaluatorContext - expression evaluation context

continueOutputProcessingView

protected void continueOutputProcessingView(boolean doOutput,
                                            boolean forceUpdate)

Called once the output condition has been met. Invokes the result set processor. Used for non-join event data.

Parameters:

doOutput - - true if the batched events should actually be output as well as processed, false if they should just be processed

forceUpdate - - true if output should be made even when no updating events have arrived

output

protected void output(boolean forceUpdate,
                      UniformPair<EventBean[]> results)

continueOutputProcessingJoin

protected void continueOutputProcessingJoin(boolean doOutput,
                                            boolean forceUpdate)

Called once the output condition has been met. Invokes the result set processor. Used for join event data.

Parameters:

doOutput - - true if the batched events should actually be output as well as processed, false if they should just be processed

forceUpdate - - true if output should be made even when no updating events have arrived

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.

Returns:

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

terminated

public void terminated()