Oracle® Fusion Middleware .NET API Reference for Oracle Coherence
12c (12.2.1.4.0)
E90869-02
Create an instance of GroupAggregator based on a specified member name(s), an IEntryAggregator and a result evaluation filter.

Namespace: Tangosol.Util.Aggregator
Assembly: Coherence (in Coherence.dll) Version: 12.2.1.4014 (12.2.1.4014)

Syntax

C#
public static GroupAggregator CreateInstance(
	string member,
	IEntryAggregator aggregator,
	IFilter filter
)

Parameters

member
Type: System..::..String
A member name or a comma-delimited sequence of names that results in a ReflectionExtractor or a MultiExtractor that will be used to split IInvocableCache entries into distinct groups.
aggregator
Type: Tangosol.Net.Cache..::..IEntryAggregator
An underlying IEntryAggregator.
filter
Type: Tangosol.Util..::..IFilter
An optional IFilter object that will be used to evaluate results of each individual group aggregation.

Return Value

An instance of GroupAggregator based on a specified member name(s), an IEntryAggregator and a result evaluation filter.

Remarks

If the specified underlying 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