Click or drag to resize

GroupAggregatorCreateInstance Method (IValueExtractor, IEntryAggregator, IFilter)

Oracle® Fusion Middleware .NET API Reference for Oracle Coherence
14c (14.1.1.0)
F23534-02
Create an instance of GroupAggregator based on a specified extractor and an IEntryAggregator and a result evaluation filter.

Namespace:  Tangosol.Util.Aggregator
Assembly:  Coherence (in Coherence.dll) Version: 14.1.1.14 (14.1.1.14)
Syntax
C#
Copy
public static GroupAggregator CreateInstance(
	IValueExtractor extractor,
	IEntryAggregator aggregator,
	IFilter filter
)

Parameters

extractor
Type: Tangosol.UtilIValueExtractor
An IValueExtractor that will be used to split a set of IInvocableDictionary entries into distinct groups.
aggregator
Type: Tangosol.Net.CacheIEntryAggregator
An underlying IEntryAggregator.
filter
Type: Tangosol.UtilIFilter
An optional IFilter object used to filter out results of individual group aggregation results.

Return Value

Type: GroupAggregator
An instance of GroupAggregator based on a specified extractor and an IEntryAggregator and a result evaluation filter.
Remarks
If the specified aggregator is an instance of IParallelAwareAggregator, then a parallel-aware instance of the GroupAggregator will be created. Otherwise, the resulting GroupAggregator will not be parallel-aware and could be ill-suited for aggregations run against large partitioned caches.
See Also