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GroupAggregatorCreateInstance Method (String, IEntryAggregator, IFilter)

.NET API Reference for Oracle® Coherence Community Edition
(14.1.1.0)
E55634-01
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: 14.1.1.1 (14.1.1.1)
Syntax
C#
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public static GroupAggregator CreateInstance(
	string member,
	IEntryAggregator aggregator,
	IFilter filter
)

Parameters

member
Type: SystemString
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.CacheIEntryAggregator
An underlying IEntryAggregator.
filter
Type: Tangosol.UtilIFilter
An optional IFilter object that will be used to evaluate results of each individual group aggregation.

Return Value

Type: GroupAggregator
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