KeyedObject< KEY > Class Template Reference

Definition of the templated KeyedObject class. More...

#include <GaudiKernel/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. More...

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

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

Protected Member Functions
unsigned long	addRef ()
	Add reference to object (Increase reference counter). More...
unsigned long	release ()
	Release reference. If the reference count is ZERO, delete the object. More...
void	setKey (const key_type &key)
	Set object key. More...
Protected Member Functions inherited from ContainedObject
	ContainedObject ()=default
	Constructors. More...
	ContainedObject (const ContainedObject &)
	Copy constructor – do NOT copy the parent reference... More...
virtual	~ContainedObject ()
	Destructor. More...

Protected Attributes
key_type	m_key {}
	Object Key. More...
long	m_refCount = 0
	Reference counter. More...
bool	m_hasKey = false
	Boolean to indicate wether a key was already assigned. More...

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

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

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 30 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 36 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 40 of file KeyedObject.h.

Constructor & Destructor Documentation

template<class KEY>

KeyedObject< KEY >::KeyedObject ( )

default

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

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 70 of file KeyedObject.h.

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

template<class KEY >

KeyedObject< KEY >::~KeyedObject ( )

inlineoverride

Standard destructor.

Definition at line 97 of file KeyedObject.h.

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

template<class KEY>

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

inlineprivate

NOBODY may copy these objects.

Definition at line 85 of file KeyedObject.h.

: ContainedObject( copy ), m_refCount( 0 ), m_hasKey( true ) {}

Member Function Documentation

template<class KEY >

unsigned long KeyedObject< KEY >::addRef ( )

inlineprotected

Add reference to object (Increase reference counter).

Definition at line 108 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 76 of file KeyedObject.h.

{ return m_hasKey; } 

template<class KEY>

long KeyedObject< KEY >::index ( ) const

inlineoverridevirtual

Distance in the parent container.

Reimplemented from ContainedObject.

Definition at line 77 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 74 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 115 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

inlineoverridevirtual

Serialize the object for writing.

Reimplemented from ContainedObject.

Definition at line 139 of file KeyedObject.h.

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

template<class KEY >

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

inlineoverridevirtual

Serialize the object for reading.

Reimplemented from ContainedObject.

Definition at line 146 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 127 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 45 of file KeyedObject.h.

template<class KEY>

friend struct GaudiDict::KeyedObjectDict< KEY >

friend

Definition at line 32 of file KeyedObject.h.

Member Data Documentation

template<class KEY>

bool KeyedObject< KEY >::m_hasKey = false

protected

Boolean to indicate wether a key was already assigned.

Definition at line 53 of file KeyedObject.h.

template<class KEY>

key_type KeyedObject< KEY >::m_key {}

protected

Object Key.

Definition at line 49 of file KeyedObject.h.

template<class KEY>

long KeyedObject< KEY >::m_refCount = 0

protected

Reference counter.

Definition at line 51 of file KeyedObject.h.

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

• GaudiKernel/GaudiKernel/KeyedObject.h