Oracle Coherence for C++ API
Release 3.6.1.0

E18813-01

RawDayTimeInterval Class Reference

#include <coherence/io/pof/RawDayTimeInterval.hpp>

Inherits Object.

List of all members.


Detailed Description

Raw immutable POF day-time interval value.
Author:
jh 2008.04.08

Public Types

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

Public Member Functions

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

virtual bool  isImmutable () const
  Return true iff no further changes can be made to the Object, that would effect the outcome of a call to its equals method.

Except for Objects which are naturally immutable (such as String), being immutable generally implies that the Object is only referenced via const pointers or views. Objects which hold references to child Objects, may need to take the immutability of their children into account when determining their own immutability.

This extended check is not performed by the default implementation, but can be integrated into the immutability checks by overriding this method, as well as making use of MemberHandles to reference child Objects.

A typical derived implementation may look as follows:

 bool isImmutable() const
     {
     if (m_fImmutable) // check recorded state
         {
         return true; // already marked as immutable, avoid calculation
         }
     else if (Object::isImmutable()) // ensure shallow immutability
         {
         // ensure deep immutability
         if (m_child1->isImmutable() && m_child2->isImmutable() ...
                                     && m_childN->isImmutable())
             {
             // record and return immutability
             return m_fImmutable = true;
             }
         // some Objects which comprise this Object are still mutable
         }
     return false;
     }
 

The default implementation return true iff the Object is only referenced via const pointers and or views.

Returns:
true iff the Object is immutable

virtual void  toStream (std::ostream &out) const
  Output a human-readable description of this Object to the given stream.

coherence::lang::operator<<(std::ostream, Object::View) is defined and will call into the toStream method, to output Objects. If a managed String object is desired, the COH_TO_STRING macro can be used to build up a String from streamable contents.

 Object::View vKey   = ...
 Object::View vValue = ...
 std::cout << vKey << " = " << vValue << std::endl;

 String::Handle hs = COH_TO_STRING(vKey << " = " << vValue);
Parameters:
out  the stream used to output the description

virtual int32_t  getDays () const
  Determine the number of days in the day-time interval.
virtual int32_t  getHours () const
  Determine the number of hours in the day-time interval.
virtual int32_t  getMinutes () const
  Determine the number of minutes in the day-time interval.
virtual int32_t  getSeconds () const
  Determine the number of seconds in the day-time interval.
virtual int32_t  getNanos () const
  Determine the number of nanoseconds in the day-time interval.

Protected Member Functions

  RawDayTimeInterval (int32_t cDays, int32_t cHours, int32_t cMinutes, int32_t cSeconds, int32_t cNanos)
  Construct a raw POF day-time interval value.
  RawDayTimeInterval (const RawDayTimeInterval &that)
  Copy constructor.

Protected Attributes

int32_t  m_cDays
  The number of days in the day-time interval.
int32_t  m_cHours
  The number of hours in the day-time interval.
int32_t  m_cMinutes
  The number of minutes in the day-time interval.
int32_t  m_cSeconds
  The number of seconds in the day-time interval.
int32_t  m_cNanos
  The number of nanoseconds in the day-time interval.

Constructor & Destructor Documentation

RawDayTimeInterval ( int32_t  cDays,
int32_t  cHours,
int32_t  cMinutes,
int32_t  cSeconds,
int32_t  cNanos  
) [protected]

Construct a raw POF day-time interval value.

Parameters:
cDays  the number of days in the day-time interval
cHours  the number of hours in the day-time interval
cMinutes  the number of minutes in the day-time interval
cSeconds  the number of seconds in the day-time interval
cNanos  the number of nanoseconds in the day-time interval
Returns:
the new RawDayTimeInterval

Member Function Documentation

virtual int32_t getDays (  )  const [virtual]

Determine the number of days in the day-time interval.

Returns:
the number of days in the day-time interval

virtual int32_t getHours (  )  const [virtual]

Determine the number of hours in the day-time interval.

Returns:
the number of hours in the day-time interval

virtual int32_t getMinutes (  )  const [virtual]

Determine the number of minutes in the day-time interval.

Returns:
the number of minutes in the day-time interval

virtual int32_t getSeconds (  )  const [virtual]

Determine the number of seconds in the day-time interval.

Returns:
the number of seconds in the day-time interval

virtual int32_t getNanos (  )  const [virtual]

Determine the number of nanoseconds in the day-time interval.

Returns:
the number of nanoseconds in the day-time interval

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