Oracle Coherence for C++ API
Release 3.7.1.0

E22845-01

ConditionalRemove Class Reference

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

Inherits AbstractProcessor, and PortableObject.

List of all members.


Detailed Description

ConditionalRemove is an EntryProcessor that performs an InvocableMap::Entry::remove Entry.remove operation if the specified condition is satisfied.

Author:
tb 2008.04.28
 

Public Types

typedef spec::Handle Handle
 ConditionalRemove Handle definition.
typedef spec::View View
 ConditionalRemove View definition.
typedef spec::Holder Holder
 ConditionalRemove 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 Map::View processAll (Set::View vsetEntries) const
 {
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

 ConditionalRemove ()
 Construct a ConditionalRemove.
 ConditionalRemove (Filter::View vFilter, bool fReturn=false)
 Construct a ConditionalRemove processor that removes an InvocableMap entry if and only if the filter applied to the entry evaluates to true.

Protected Attributes

MemberView< Filterm_vFilter
 The underlying filter.
bool m_fReturn
 Specifies whether or not a return value is required.

Constructor & Destructor Documentation

ConditionalRemove ( Filter::View  vFilter,
    bool  fReturn = false 
  )    [protected]

Construct a ConditionalRemove processor that removes an InvocableMap entry if and only if the filter applied to the entry evaluates to true.

This processor may optionally return the current value as a result of the invocation if it has not been removed (the filter evaluated to false).

Parameters:
 vFilter the filter to evaluate an entry
 fReturn specifies whether or not the processor should return the current value if it has not been removed


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