public class LengthWindowView extends ViewSupport implements DataWindowView, CloneableView
| Modifier and Type | Field and Description |
|---|---|
protected AgentInstanceViewFactoryChainContext |
agentInstanceViewFactoryContext |
protected ArrayDeque<EventBean> |
events |
EMPTY_VIEW_ARRAY, parent| Constructor and Description |
|---|
LengthWindowView(AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext,
LengthWindowViewFactory lengthWindowViewFactory,
int size,
ViewUpdatedCollection viewUpdatedCollection)
Constructor creates a moving window extending the specified number of elements into the past.
|
| Modifier and Type | Method and Description |
|---|---|
View |
cloneView()
Duplicates the view.
|
EventType |
getEventType()
Provides metadata information about the type of object the event collection contains.
|
int |
getSize()
Returns the size of the length window.
|
ViewFactory |
getViewFactory() |
ViewUpdatedCollection |
getViewUpdatedCollection()
Returns the (optional) collection handling random access to window contents for prior or previous events.
|
boolean |
isEmpty()
Returns true if the window is empty, or false if not empty.
|
Iterator<EventBean> |
iterator()
Allows iteration through all elements in this event collection.
|
String |
toString() |
void |
update(EventBean[] newData,
EventBean[] oldData)
Notify that data has been added or removed from the Viewable parent.
|
void |
visitView(ViewDataVisitor viewDataVisitor) |
addView, addView, dumpChildViews, dumpUpdateParams, dumpUpdateParams, findDescendent, findViewIndex, getParent, getViews, hasViews, removeAllViews, removeView, removeView, setParent, updateChildren, updateChildrenclone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitaddView, getViews, hasViews, removeAllViews, removeViewforEach, spliteratorprotected final AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext
protected final ArrayDeque<EventBean> events
public LengthWindowView(AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext, LengthWindowViewFactory lengthWindowViewFactory, int size, ViewUpdatedCollection viewUpdatedCollection)
size - is the specified number of elements into the pastviewUpdatedCollection - is a collection that the view must update when receiving eventslengthWindowViewFactory - for copying this view in a group-byagentInstanceViewFactoryContext - contextpublic View cloneView()
CloneableViewExpected to return a same view in initialized state for grouping.
cloneView in interface CloneableViewpublic boolean isEmpty()
public final int getSize()
public ViewUpdatedCollection getViewUpdatedCollection()
public final EventType getEventType()
EventCollectiongetEventType in interface EventCollectionpublic 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.
public final Iterator<EventBean> iterator()
EventCollectioniterator in interface EventCollectioniterator in interface Iterable<EventBean>public void visitView(ViewDataVisitor viewDataVisitor)
visitView in interface ViewDataVisitablepublic ViewFactory getViewFactory()
getViewFactory in interface GroupableView