For example, we want to calculate the average of IBM stock every hour, for the last hour. The view accepts 2 parameter combinations. (1) A time interval is supplied with a reference point - based on this point the intervals are set. (1) A time interval is supplied but no reference point - the reference point is set when the first event arrives.
If there are no events in the current and prior batch, the view will not invoke the update method of child views. In that case also, no next callback is scheduled with the scheduling service until the next event arrives.
The following tables list the members exposed by the TimeBatchView type.
Public Methods
Name | Description | |
---|---|---|
![]() | AddView |
Add a view to the viewable object.
(Inherited from ViewSupport.) |
![]() | AttachesTo |
Return null if the view will accept being attached to a particular object.
(Overrides .AttachesTo(Viewable).) |
![]() ![]() | ComputeWaitMSec | Given a current time and a reference time and an interval size, compute the amount of
milliseconds till the next interval.
|
![]() | Equals | (Inherited from Object.) |
![]() | GetEnumerator |
Returns an enumerator that iterates through the collection.
(Overrides .GetEnumerator().) |
![]() | GetHashCode | (Inherited from Object.) |
![]() | GetType | (Inherited from Object.) |
![]() | GetViews |
Returns all added views.
(Inherited from ViewSupport.) |
![]() | RemoveView |
Remove a view.
(Inherited from ViewSupport.) |
![]() | SendBatch |
This method updates child views and clears the batch of events.
We schedule a new callback at this time if there were events in the batch.
|
![]() | ToString | (Overrides .ToString().) |
![]() | Update |
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.
(Overrides .Update(EventBean[](), EventBean[]()).)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. |
Protected Methods
Name | Description | |
---|---|---|
![]() | Finalize | (Inherited from Object.) |
![]() | MemberwiseClone | (Inherited from Object.) |
Protected Fields
Name | Description | |
---|---|---|
![]() | parent |
Parent viewable to this view - directly accessible by subclasses.
(Inherited from ViewSupport.) |
Public Constructors
Name | Description | |
---|---|---|
![]() | TimeBatchViewNew | Overloaded. |
Public Properties
Name | Description | |
---|---|---|
![]() | EventType |
Provides metadata information about the type of object the event collection contains.
(Overrides .EventType.) |
![]() | HasViews |
Test is there are any views to the Viewable.
(Inherited from ViewSupport.) |
![]() | Id |
Gets the unique id for the view
(Inherited from ViewSupport.) |
![]() | InitialReferencePoint |
Gets or sets the reference point to use to anchor interval Start and end dates to.
|
![]() | MsecIntervalSize |
Gets or sets the interval size in milliseconds.
|
![]() | Parent |
Gets or sets the View's parent Viewable.
(Inherited from ViewSupport.) |
![]() | ViewServiceContext |
Gets or sets the context instances used by the view.
|
Explicit Interface Implementations
Name | Description | |
---|---|---|
![]() ![]() | IEnumerable.System.Collections.IEnumerable.GetEnumerator |
Returns an enumerator that iterates through a collection.
(Inherited from ViewSupport.) |