Oracle Coherence for C++ API
Release 3.6.0.0

E15728-01

ExtractorProcessor Class Reference

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

Inherits AbstractProcessor, and PortableObject.

List of all members.


Detailed Description

ExtractorProcessor is an EntryProcessor implementations that extracts a value from an object cached in an InvocableMap.

Author:
tb 2008.04.28

Public Types

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

 ExtractorProcessor ()
 Construct a ExtractorProcessor.
 ExtractorProcessor (ValueExtractor::View vExtractor)
 Construct an ExtractorProcessor based on the specified ValueExtractor.

Protected Attributes

MemberView
< ValueExtractor
m_vExtractor
 The underlying value extractor.

Constructor & Destructor Documentation

ExtractorProcessor ( ValueExtractor::View  vExtractor  )  [protected]

Construct an ExtractorProcessor based on the specified ValueExtractor.

Parameters:
vExtractor a ValueExtractor object; passing null is equivalent to using the IdentityExtractor


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