Oracle Coherence for C++ API
Release 3.6.0.0

E15728-01

UpdaterProcessor Class Reference

#include <coherence/util/processor/UpdaterProcessor.hpp>

Inherits AbstractProcessor, and PortableObject.

List of all members.


Detailed Description

UpdaterProcessor is an EntryProcessor implementations that updates an attribute of an object cached in an InvocableMap.
Author:
tb 2008.04.28

Public Types

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

Public Member Functions

virtual Object::Holder  process (InvocableMap::Entry::Handle hEntry) const
  Process a Map::Entry object.
Parameters:
hEntry  the Entry to process
Returns:
the result of the processing, if any

virtual void  readExternal (PofReader::Handle hIn)
 
virtual void  writeExternal (PofWriter::Handle hOut) const
 
virtual bool  equals (Object::View v) const
 
virtual size32_t  hashCode () const
  Return a hash code value for the Object.

This method is supported for the benefit of hash-based containers.

The general contract of hashCode is:

  • Whenever it is invoked on the same Object more than once during an execution of an application, the hashCode method must consistently return the same value, provided no information used in equals comparisons on the object is modified. This value need not remain consistent from one execution of an application to another execution of the same application.
  • If two Objects are equal according to the equals method, then calling the hashCode method on each of the two Objects must produce the same value.
  • It is not required that if two Objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct results. However, the programmer should be aware that producing distinct results for unequal objects may improve the performance of hash-based containers.

The default implementation is identity based.

Returns:
a hash code value for this Object


Protected Member Functions

  UpdaterProcessor ()
  Construct a UpdaterProcessor.
  UpdaterProcessor (ValueUpdater::View vUpdater, Object::Holder hValue)
  Construct an UpdaterProcessor based on the specified ValueUpdater.

Protected Attributes

MemberView
< ValueUpdater
m_vUpdater
  The underlying ValueUpdater.
MemberHolder< Object m_hValue
  A value to update the entry's value with.

Constructor & Destructor Documentation

UpdaterProcessor ( ValueUpdater::View  vUpdater,
Object::Holder  hValue  
) [protected]

Construct an UpdaterProcessor based on the specified ValueUpdater.

Parameters:
vUpdater  a ValueUpdater object; passing null will simpy replace the entry's value with the specified one instead of updating it
hValue  the value to update the target entry with

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