Oracle Coherence for C++ API
Release 3.6.0.0

E15728-01

Count Class Reference

#include <coherence/util/aggregator/Count.hpp>

Inherits Object, PortableObject, and InvocableMap::ParallelAwareAggregator.

List of all members.


Detailed Description

Calculates a number of values in an entry set.

Author:
djl 2008.05.12

Public Types

typedef spec::Handle Handle
 Count Handle definition.
typedef spec::View View
 Count View definition.
typedef spec::Holder Holder
 Count Holder definition.

Public Member Functions

virtual Object::Holder aggregate (Set::View vSetEntries)
 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

virtual
InvocableMap::EntryAggregator::Handle 
getParallelAggregator ()
 Get an aggregator that can take the place of this aggregator in situations in which the InvocableMap can aggregate in parallel.

Returns:
the aggregator that will be run in parallel

virtual Object::Holder aggregateResults (Collection::View vCollResults)
 Aggregate the results of the parallel aggregations.

Parameters:
vCollResults the parallel aggregation results
Returns:
the aggregation of the parallel aggregation results

virtual void readExternal (PofReader::Handle hIn)
 
virtual void writeExternal (PofWriter::Handle hOut) const
 

Protected Member Functions

 Count ()
 Default constructor (necessary for the PortableObject interface).

The documentation for this class was generated from the following file:
Copyright © 2000, 2010, Oracle and/or its affiliates. All rights reserved.