TopNAggregator Class |
14c (14.1.1.0)
F23534-02
TopNAggregator is a ParallelAwareAggregator that aggregates the
top N extracted values into an array. The extracted values
must not be null, but do not need to be unique.
Inheritance HierarchyNamespace: Tangosol.Util.Aggregator
Assembly: Coherence (in Coherence.dll) Version: 14.1.1.14 (14.1.1.14)
SyntaxC#
public class TopNAggregator : IParallelAwareAggregator, IEntryAggregator, IPartialResultAggregator, IPortableObject
The TopNAggregator type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | TopNAggregator |
Default constructor.
|
| TopNAggregator(IValueExtractor, IComparer, Int32) |
Construct a TopNAggregator that will aggregate the top extracted
values, as determined by the specified comparator.
|
Properties| Name | Description | |
|---|---|---|
 | Comparer |
The IComparer used by this aggregator.
|
| Extractor |
The ValueExtractor used by this aggregator.
|
| IsParallel |
True iff this aggregator is to be used in parallel.
|
 | ParallelAggregator |
Get an aggregator that can take the place of this aggregator in
situations in which the IInvocableCache can
aggregate in parallel.
|
| Results |
The maximum number of results to include in the aggregation result.
|
Methods| Name | Description | |
|---|---|---|
 | AddToResult |
Add the specified values to the result if they are within the top-N.
|
| Aggregate |
Process a set of IInvocableCacheEntry objects
in order to produce an aggregated result.
|
| AggregatePartialResults |
Aggregate the results of the parallel aggregations, producing a
partial result logically representing the partial aggregation. The
returned partial result will be further {@link
ParallelAwareAggregator#aggregateResults aggregated} to produce
the final result.
|
| AggregateResults |
Aggregate the results of the parallel aggregations.
|
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| FinalizeResult |
Finalize the partial aggregation result.
|
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ReadExternal |
Restore the contents of a user type instance by reading its state
using the specified IPofReader object.
|
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| WriteExternal |
Save the contents of a POF user type instance by writing its
state using the specified IPofWriter object.
|
See Also