[This topic is pre-release documentation and is subject to change in future releases. Blank topics are included as placeholders.]
Maintains aggregation state applying values as entering and leaving the state.
Implementations must also act as a factory for further independent copies of aggregation states such that new aggregation state holders and be created from a prototype.
The following tables list the members exposed by the Aggregator type.
Public Methods
Name | Description | |
---|---|---|
![]() | Enter |
Apply the value as entering aggregation (entering window).
The value can be null since 'null' values may be counted as unique separate values.
|
![]() | Leave |
Apply the value as leaving aggregation (leaving window).
The value can be null since 'null' values may be counted as unique separate values.
|
![]() | NewAggregator | Make a new, initalized aggregation state. |