public class ExpressionBatchView extends ExpressionViewBase
| Modifier and Type | Field and Description |
|---|---|
protected EventBean[] |
lastBatch |
protected EventBean |
newestEvent |
protected long |
newestEventTimestamp |
protected EventBean |
oldestEvent |
protected long |
oldestEventTimestamp |
protected Set<EventBean> |
window |
agentInstanceContext, aggregationService, builtinEventProps, eventsPerStream, factory, scheduleHandle, scheduleSlot, viewUpdatedCollectionchild, parentINSTANCE_NO_ACTION| Constructor and Description |
|---|
ExpressionBatchView(ExpressionBatchViewFactory factory,
ViewUpdatedCollection viewUpdatedCollection,
ObjectArrayEventBean builtinEventProps,
AgentInstanceViewFactoryChainContext agentInstanceContext) |
| Modifier and Type | Method and Description |
|---|---|
void |
expire(int numEventsInBatch) |
boolean |
isEmpty()
Returns true if the window is empty, or false if not empty.
|
Iterator<EventBean> |
iterator()
Allows iteration through all elements in this viewable.
|
void |
scheduleCallback()
Implemented to check the expiry expression.
|
void |
update(EventBean[] newData,
EventBean[] oldData)
Notify that data has been added or removed from the Viewable parent.
|
void |
update(Object newValue,
Object oldValue)
Indicate a change in variable value.
|
void |
visitView(ViewDataVisitor viewDataVisitor) |
getAggregationService, getEventType, getViewFactory, getViewUpdatedCollection, stop, toStringgetChild, getParent, setChild, setParentclone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitgetParent, setParentgetChild, setChildforEach, spliteratorprotected EventBean[] lastBatch
protected long newestEventTimestamp
protected long oldestEventTimestamp
protected EventBean oldestEvent
protected EventBean newestEvent
public ExpressionBatchView(ExpressionBatchViewFactory factory, ViewUpdatedCollection viewUpdatedCollection, ObjectArrayEventBean builtinEventProps, AgentInstanceViewFactoryChainContext agentInstanceContext)
public boolean isEmpty()
public void scheduleCallback()
ExpressionViewBasescheduleCallback in class ExpressionViewBasepublic void update(EventBean[] newData, EventBean[] oldData)
ViewIf 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.
newData - is the new data that has been added to the parent viewoldData - is the old data that has been removed from the parent viewpublic void expire(int numEventsInBatch)
public void visitView(ViewDataVisitor viewDataVisitor)
public final Iterator<EventBean> iterator()
Viewablepublic void update(Object newValue, Object oldValue)
VariableChangeCallbackupdate in interface VariableChangeCallbackupdate in class ExpressionViewBasenewValue - new valueoldValue - old valueCopyright © 2005–2018. All rights reserved.