Oracle Coherence for C++ API


Float64Sum Class Reference

#include <coherence/util/aggregator/Float64Sum.hpp>

Inherits AbstractFloat64Aggregator.

List of all members.

Detailed Description

Sums up numeric values extracted from a set of entries in a Map.

All the extracted Number objects will be treated as float64_t values.

djl 2008.05.12

Public Types

typedef spec::Handle  Handle
  Float64Sum Handle definition.
typedef spec::View  View
  Float64Sum View definition.
typedef spec::Holder  Holder
  Float64Sum Holder definition.

Protected Member Functions

  Float64Sum ()
  Default constructor (necessary for the PortableObject interface).
  Float64Sum (ValueExtractor::View vExtractor)
  Construct a Float64Sum aggregator.
virtual void  init (bool fFinal)
  Initialize the aggregation result.
fFinal  true is passed if the aggregation process that is being initialized must produce a final aggregation result; this will only be false if a parallel approach is being used and the initial (partial) aggregation process is being initialized

virtual void  process (Object::View v, bool fFinal)
  Incorporate one aggregatable value into the result.

If the fFinal parameter is true, the given object is a partial result (returned by an individual parallel aggregator) that should be incorporated into the final result; otherwise, the object is a value extracted from an coherence::util::InvocableMap::Entry.

vO  the value to incorporate into the aggregated result
fFinal  true to indicate that the given object is a partial result returned by a parallel aggregator

Constructor & Destructor Documentation

Float64Sum ( ValueExtractor::View  vExtractor  )  [protected]

Construct a Float64Sum aggregator.

vExtractor  the extractor that provides a value in the form of any object that is a Number

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