LinkManager Class Reference

A LinkManager is the object aggregated into a DataObject, which is responsible for the handling of non-tree like links. More...

#include <GaudiKernel/LinkManager.h>

Collaboration diagram for LinkManager:

Classes
class	Link
	Embedded class defining a symbolic link Note: No copy constructor; bitwise copy (done by the compiler) is just fine. More...

Public Types
enum	DirLinkType { INVALID, VALID }
	Directory link types. More...

Public Member Functions
	LinkManager ()=default
	Standard Constructor. More...
virtual	~LinkManager ()
	Standard Destructor. More...
long	size () const
	Retrieve number of link present. More...
bool	empty () const
Link *	link (long id)
	Retrieve symbolic link identified by ID. More...
Link *	link (const DataObject *pObject)
	Retrieve symbolic link identified by object. More...
Link *	link (const std::string &path)
	Retrieve symbolic link identified by path. More...
long	addLink (const std::string &path, const DataObject *pObject) const
	Add link by object reference and path. More...
long	removeLink (const DataObject *pObject) const
	Remove link by object reference. More...
long	removeLink (const std::string &fullPath) const
	Remove link by object reference. More...
long	removeLink (long id) const
	Remove link by link ID. More...
void	clearLinks ()
	Remove all possibly existing symbolic links. More...

Static Public Member Functions
static LinkManager *	newInstance ()
	Static instantiation. More...
static void	setInstantiator (LinkManager *(*newInstance)())
	Assign new instantiator. More...

Private Attributes
std::vector< Link * >	m_linkVector
	@ TODO: replace by std::vector<std::unique_ptr<Link>> once ROOT does 'automatic' schema conversion from T* to std::unique_ptr<T>... More...

Friends
class	MergeEventAlg
	@ TODO: provide interface to let MergeEvntAlg do its thing More...

Detailed Description

A LinkManager is the object aggregated into a DataObject, which is responsible for the handling of non-tree like links.

Author

M.Frank

Definition at line 21 of file LinkManager.h.

Member Enumeration Documentation

enum LinkManager::DirLinkType

Directory link types.

Enumerator
INVALID
VALID

Definition at line 25 of file LinkManager.h.

{ INVALID, VALID };

Constructor & Destructor Documentation

LinkManager::LinkManager ( )

default

Standard Constructor.

LinkManager::~LinkManager ( )

virtual

Standard Destructor.

destructor

Definition at line 9 of file LinkManager.cpp.

                          {
  for ( auto& i : m_linkVector ) delete i;
}

Member Function Documentation

long LinkManager::addLink	(	const std::string &	path,
		const DataObject *	pObject
	)		const

Add link by object reference and path.

Add link by object reference and path string.

Definition at line 54 of file LinkManager.cpp.

                                                                                  {
  long n = 0;
  for ( auto& lnk : m_linkVector ) {
    const DataObject* pO = lnk->object();
    if ( pO && pO == pObject ) return n;
    if ( lnk->path() == path ) {
      if ( pObject && pObject != pO ) { lnk->setObject( const_cast<DataObject*>( pObject ) ); }
      return n;
    }
    ++n;
  }
  // Link is completely unknown
  m_linkVector.emplace_back( new Link( m_linkVector.size(), path, const_cast<DataObject*>( pObject ) ) );
  return m_linkVector.back()->ID();
}

void LinkManager::clearLinks

(

)

Remove all possibly existing symbolic links.

Definition at line 107 of file LinkManager.cpp.

                             {
  for ( auto& i : m_linkVector ) delete i;
  m_linkVector.clear();
}

bool LinkManager::empty ( ) const

inline

Definition at line 101 of file LinkManager.h.

{ return m_linkVector.empty(); }

LinkManager::Link * LinkManager::link

(

long

id

)

Retrieve symbolic link identified by ID.

Definition at line 29 of file LinkManager.cpp.

                                            {
  return ( 0 <= id && (unsigned)id < m_linkVector.size() ) ? m_linkVector[id] : nullptr;
}

LinkManager::Link * LinkManager::link

(

const DataObject *

pObject

)

Retrieve symbolic link identified by object.

Retrieve symbolic link identified by Object pointer.

Definition at line 34 of file LinkManager.cpp.

                                                              {
  if ( pObject ) {
    for ( auto& i : m_linkVector ) {
      if ( i->object() == pObject ) return i;
    }
  }
  return nullptr;
}

LinkManager::Link * LinkManager::link

(

const std::string &

path

)

Retrieve symbolic link identified by path.

Retrieve symbolic link identified by Object path.

Definition at line 44 of file LinkManager.cpp.

                                                          {
  if ( 0 != path.length() ) {
    for ( auto& i : m_linkVector ) {
      if ( i->path() == path ) return i;
    }
  }
  return nullptr;
}

LinkManager * LinkManager::newInstance ( )

static

Static instantiation.

Definition at line 26 of file LinkManager.cpp.

{ return s_newInstance ? ( *s_newInstance )() : new LinkManager(); }

long LinkManager::removeLink

(

const DataObject *

pObject

)

const

Remove link by object reference.

Definition at line 71 of file LinkManager.cpp.

                                                              {
  long n = 0;
  for ( auto i = m_linkVector.begin(); i != m_linkVector.end(); i++ ) {
    if ( ( *i )->object() == pObject ) {
      delete *i;
      m_linkVector.erase( i );
      return n;
    }
    ++n;
  }
  return INVALID;
}

long LinkManager::removeLink

(

const std::string &

fullPath

)

const

Remove link by object reference.

Definition at line 85 of file LinkManager.cpp.

                                                          {
  long n = 0;
  for ( auto i = m_linkVector.begin(); i != m_linkVector.end(); i++ ) {
    if ( ( *i )->path() == path ) {
      delete *i;
      m_linkVector.erase( i );
      return n;
    }
    n++;
  }
  return INVALID;
}

long LinkManager::removeLink

(

long

id

)

const

Remove link by link ID.

Definition at line 99 of file LinkManager.cpp.

                                            {
  auto i = std::next( m_linkVector.begin(), id );
  delete *i;
  m_linkVector.erase( i );
  return id;
}

void LinkManager::setInstantiator ( LinkManager *(*)()  newInstance )

static

Assign new instantiator.

Definition at line 23 of file LinkManager.cpp.

{ s_newInstance = newInstance; }

long LinkManager::size ( ) const

inline

Retrieve number of link present.

Definition at line 100 of file LinkManager.h.

{ return m_linkVector.size(); }

Friends And Related Function Documentation

friend class MergeEventAlg

friend

@ TODO: provide interface to let MergeEvntAlg do its thing

Definition at line 79 of file LinkManager.h.

Member Data Documentation

std::vector<Link*> LinkManager::m_linkVector

mutableprivate

@ TODO: replace by std::vector<std::unique_ptr<Link>> once ROOT does 'automatic' schema conversion from T* to std::unique_ptr<T>...

Or, even better, just std::vector<Link>, given that Link is barely larger than a pointer (40 vs. 8 bytes) – but that requires more invasive schema evolution.

The vector containing all links which are non-tree like

Definition at line 88 of file LinkManager.h.

---

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

• GaudiKernel/GaudiKernel/LinkManager.h
• GaudiKernel/src/Lib/LinkManager.cpp