public final class LastPostObserverView extends ViewSupport
child| Constructor and Description |
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LastPostObserverView(int streamId)
Ctor.
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| Modifier and Type | Method and Description |
|---|---|
EventType |
getEventType()
Provides metadata information about the type of object the event collection contains.
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Viewable |
getParent()
Returns the View's parent Viewable.
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Iterator<EventBean> |
iterator()
Allows iteration through all elements in this viewable.
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void |
setObserver(LastPostObserver observer)
Set an observer.
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void |
setParent(Viewable parent)
Called when the View is added to a Viewable object.
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void |
update(EventBean[] newData,
EventBean[] oldData)
Notify that data has been added or removed from the Viewable parent.
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getChild, setChildclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitforEach, spliteratorpublic LastPostObserverView(int streamId)
streamId - - number of the stream for which the view buffers the generated events.public void setObserver(LastPostObserver observer)
observer - to be called when results are availablepublic final EventType getEventType()
Viewablepublic final Iterator<EventBean> iterator()
Viewablepublic Viewable getParent()
ViewgetParent in interface ViewgetParent in class ViewSupportpublic void setParent(Viewable parent)
ViewsetParent in interface ViewsetParent in class ViewSupportparent - is the parent that this view is a child ofpublic final 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 viewCopyright © 2005–2018. All rights reserved.