Oracle Fusion Middleware C++ API Reference for Oracle Coherence
12c (12.1.2)
E26041-01

InvocableMap::EntryAggregator Class Reference

#include <coherence/util/InvocableMap.hpp>

Inherits Object.

Inherited by CompositeAggregator [virtual], GroupAggregator [virtual], and InvocableMap::ParallelAwareAggregator [virtual].

List of all members.

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Detailed Description

An EntryAggregator represents processing that can be directed to occur against some subset of the entries in an InvocableMap, resulting in a aggregated result.

Common examples of aggregation include functions such as min(), max() and avg(). However, the concept of aggregation applies to any process that needs to evaluate a group of entries to come up with a single answer.

Public Types
typedef spec::Handle	Handle
	EntryAggregator Handle definition.
typedef spec::View	View
	EntryAggregator View definition.
typedef spec::Holder	Holder
	EntryAggregator Holder definition.
Public Member Functions
virtual Object::Holder	aggregate (Set::View vSetEntries)=0
	Process a set of InvocableMap::Entry objects in order to produce an aggregated result.

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Member Function Documentation

virtual Object::Holder aggregate

(

Set::View

vSetEntries

)

[pure virtual]

Process a set of InvocableMap::Entry objects in order to produce an aggregated result.

Parameters:

vSetEntries

a Set of read-only InvocableMap::Entry objects to aggregate

Returns:

the aggregated result from processing the entries

Implemented in AbstractAggregator, CompositeAggregator, Count, GroupAggregator, PriorityAggregator, and QueryRecorder.

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The documentation for this class was generated from the following file:

• coherence/util/InvocableMap.hpp

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