KeyedObject< KEY > Class Template Reference

Definition of the templated KeyedObject class. More...

#include <KeyedObject.h>

Inheritance diagram for KeyedObject< KEY >:

Collaboration diagram for KeyedObject< KEY >:

Public Types
typedef KEY	key_type
	Definition of the key-type to access object.

Public Member Functions
	KeyedObject ()
	Standard Constructor. The object key is preset to the invalid value.
	KeyedObject (const key_type &kval)
	Standard Constructor accepting the object's key.
virtual	~KeyedObject ()
	Standard destructor.
const key_type &	key () const
	Retrieve Key of the object.
bool	hasKey () const
	Check if the object has a key assigned or not.
virtual long	index () const
	Distance in the parent container.
virtual StreamBuffer &	serialize (StreamBuffer &s) const
	Serialize the object for writing.
virtual StreamBuffer &	serialize (StreamBuffer &s)
	Serialize the object for reading.
Public Member Functions inherited from ContainedObject
virtual const CLID &	clID () const
	Retrieve pointer to class identifier.
const ObjectContainerBase *	parent () const
	Access to parent object.
void	setParent (ObjectContainerBase *value)
	Update parent member.
virtual std::ostream &	fillStream (std::ostream &s) const
	Fill the output stream (ASCII)

Protected Types
typedef Containers::key_traits < key_type >	traits
	definition of the container key traits to be made friend

Protected Member Functions
unsigned long	addRef ()
	Add reference to object (Increase reference counter).
unsigned long	release ()
	Release reference. If the reference count is ZERO, delete the object.
void	setKey (const key_type &key)
	Set object key.
Protected Member Functions inherited from ContainedObject
	ContainedObject ()
	Constructors.
	ContainedObject (const ContainedObject &)
	Copy constructor.
virtual	~ContainedObject ()
	Destructor.

Protected Attributes
key_type	m_key
	Object Key; It's initial value is not determined.
long	m_refCount
	Reference counter.
bool	m_hasKey
	Boolean to indicate wether a key was already assigned.

Private Member Functions
	KeyedObject (const KeyedObject &copy)
	NOBODY may copy these objects.

Friends
struct	GaudiDict::KeyedObjectDict< KEY >
struct	Containers::key_traits< key_type >
	Allow the container traits to access full object properties.

Additional Inherited Members
Static Public Member Functions inherited from ContainedObject
static const CLID &	classID ()

Detailed Description

template<class KEY>
class KeyedObject< KEY >

Definition of the templated KeyedObject class.

This object, which is of the basic containedObject type allows to be identified by key.

This implementation uses a reference count mechanism for insertion into multiple containers; Once the reference count is NULL, the object will automatically be deleted.

Author

M.Frank CERN/LHCb

Version

1.0

Definition at line 28 of file KeyedObject.h.

Member Typedef Documentation

template<class KEY >

typedef KEY KeyedObject< KEY >::key_type

Definition of the key-type to access object.

Definition at line 32 of file KeyedObject.h.

template<class KEY >

typedef Containers::key_traits<key_type> KeyedObject< KEY >::traits

protected

definition of the container key traits to be made friend

Definition at line 36 of file KeyedObject.h.

Constructor & Destructor Documentation

template<class KEY >

KeyedObject< KEY >::KeyedObject ( )

inline

Standard Constructor. The object key is preset to the invalid value.

Definition at line 61 of file KeyedObject.h.

: m_key(), m_refCount(0), m_hasKey(false) {                     }

template<class KEY >

KeyedObject< KEY >::KeyedObject ( const key_type &  kval )

inline

Standard Constructor accepting the object's key.

The key must be valid and cannot be changed later.

Definition at line 65 of file KeyedObject.h.

:m_key(kval),m_refCount(0),m_hasKey(true) { }

template<class KEY >

KeyedObject< KEY >::~KeyedObject ( )

inlinevirtual

Standard destructor.

Definition at line 91 of file KeyedObject.h.

{
  ObjectContainerBase* p = const_cast<ObjectContainerBase*>(parent());
  if ( p )  {
    setParent(0);
    p->remove(this);
  }
}

template<class KEY >

KeyedObject< KEY >::KeyedObject ( const KeyedObject< KEY > &  copy )

inlineprivate

NOBODY may copy these objects.

Definition at line 79 of file KeyedObject.h.

: ContainedObject(copy) {               }

Member Function Documentation

template<class KEY >

unsigned long KeyedObject< KEY >::addRef ( )

inlineprotected

Add reference to object (Increase reference counter).

Definition at line 102 of file KeyedObject.h.

                                       {
  return ++m_refCount;
}

template<class KEY >

bool KeyedObject< KEY >::hasKey ( ) const

inline

Check if the object has a key assigned or not.

Definition at line 71 of file KeyedObject.h.

{                     return m_hasKey; }  

template<class KEY >

virtual long KeyedObject< KEY >::index ( ) const

inlinevirtual

Distance in the parent container.

Reimplemented from ContainedObject.

Definition at line 72 of file KeyedObject.h.

{    return traits::identifier(m_key); }

template<class KEY >

const key_type& KeyedObject< KEY >::key ( ) const

inline

Retrieve Key of the object.

Definition at line 69 of file KeyedObject.h.

{                     return m_key;    }

template<class KEY >

unsigned long KeyedObject< KEY >::release ( )

inlineprotected

Release reference. If the reference count is ZERO, delete the object.

Definition at line 108 of file KeyedObject.h.

                                        {
  long cnt = --m_refCount;
  if ( cnt <= 0 )  {
    delete this;
  }
  return cnt;
}

template<class KEY >

StreamBuffer & KeyedObject< KEY >::serialize ( StreamBuffer &  s ) const

inlinevirtual

Serialize the object for writing.

Reimplemented from ContainedObject.

Definition at line 132 of file KeyedObject.h.

                                                                 {
  return ContainedObject::serialize(s) << traits::identifier(m_key);
}

template<class KEY >

StreamBuffer & KeyedObject< KEY >::serialize ( StreamBuffer &  s )

inlinevirtual

Serialize the object for reading.

Reimplemented from ContainedObject.

Definition at line 138 of file KeyedObject.h.

                                                           {
  long k;
  ContainedObject::serialize(s) >> k;
  m_key = traits::makeKey(k);
  m_hasKey = true;
  return s;
}

template<class KEY >

void KeyedObject< KEY >::setKey ( const key_type &  key )

inlineprotected

Set object key.

The key for consistency reasons can be set only once for the object. Any attempt to redefine the key results in an exception.

Definition at line 121 of file KeyedObject.h.

                                                 {
  if ( !m_hasKey )   {
    m_key = key;
    m_hasKey = true;
    return;
  }
  Containers::cannotAssignObjectKey();
}

Friends And Related Function Documentation

template<class KEY >

friend struct Containers::key_traits< key_type >

friend

Allow the container traits to access full object properties.

Definition at line 41 of file KeyedObject.h.

template<class KEY >

friend struct GaudiDict::KeyedObjectDict< KEY >

friend

Definition at line 29 of file KeyedObject.h.

Member Data Documentation

template<class KEY >

bool KeyedObject< KEY >::m_hasKey

protected

Boolean to indicate wether a key was already assigned.

Definition at line 49 of file KeyedObject.h.

template<class KEY >

key_type KeyedObject< KEY >::m_key

protected

Object Key; It's initial value is not determined.

Definition at line 45 of file KeyedObject.h.

template<class KEY >

long KeyedObject< KEY >::m_refCount

protected

Reference counter.

Definition at line 47 of file KeyedObject.h.

---

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

• /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v23r5/GaudiKernel/GaudiKernel/KeyedObject.h