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 explicit copy constructor; implicit compiler generated one is just fine. More...

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

Public Member Functions
	LinkManager ()=default
	Standard Constructor.
	LinkManager (LinkManager &&)=default
LinkManager &	operator= (LinkManager &&)=default
	LinkManager (LinkManager const &)=delete
LinkManager &	operator= (LinkManager const &)=delete
	~LinkManager ()
	Standard Destructor.
long	size () const
	Retrieve number of link present.
bool	empty () const
const Link *	link (long id) const
	Retrieve symbolic link identified by ID.
Link *	link (long id)
const Link *	link (const DataObject *pObject) const
	Retrieve symbolic link identified by object.
Link *	link (const DataObject *pObject)
const Link *	link (std::string_view path) const
	Retrieve symbolic link identified by path.
Link *	link (std::string_view path)
long	addLink (const std::string &path, const DataObject *pObject)
	Add link by object reference and path.
auto	end () const
auto	begin () const

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>... Or, even better, just std::vector<Link>, given that Link is barely larger than a pointer (40 vs.

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 28 of file LinkManager.h.

Member Enumeration Documentation

DirLinkType

enum LinkManager::DirLinkType

Directory link types.

Enumerator
INVALID
VALID

Definition at line 32 of file LinkManager.h.

{ INVALID, VALID };

Constructor & Destructor Documentation

LinkManager() [1/3]

LinkManager::LinkManager ( )

default

Standard Constructor.

LinkManager() [2/3]

LinkManager::LinkManager ( LinkManager && )

default

LinkManager() [3/3]

LinkManager::LinkManager ( LinkManager const & )

delete

~LinkManager()

LinkManager::~LinkManager

(

)

Standard Destructor.

destructor

Definition at line 26 of file LinkManager.cpp.

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

Member Function Documentation

addLink()

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

Add link by object reference and path.

Add link by object reference and path string.

Definition at line 66 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
  return m_linkVector.emplace_back( new Link( m_linkVector.size(), path, const_cast<DataObject*>( pObject ) ) )->ID();
}

begin()

auto LinkManager::begin ( ) const

inline

Definition at line 103 of file LinkManager.h.

                     {
    class Iterator {
      int                i;
      LinkManager const* parent;
 
    public:
      Iterator( LinkManager const* p, int i ) : i{ i }, parent{ p } {}
      bool      operator==( std::default_sentinel_t ) const { return i == parent->size(); }
      Iterator& operator++() {
        ++i;
        return *this;
      }
      const Link& operator*() const { return *parent->link( i ); }
    };
    return Iterator{ this, 0 };
  }

empty()

bool LinkManager::empty ( ) const

inline

Definition at line 89 of file LinkManager.h.

{ return m_linkVector.empty(); }

end()

auto LinkManager::end ( ) const

inline

Definition at line 102 of file LinkManager.h.

{ return std::default_sentinel; }

link() [1/6]

LinkManager::Link * LinkManager::link

(

const DataObject *

pObject

)

Definition at line 53 of file LinkManager.cpp.

                                                              {
  return pObject ? findLink( m_linkVector, [=]( auto* j ) { return j->object() == pObject; } ) : nullptr;
}

link() [2/6]

const LinkManager::Link * LinkManager::link

(

const DataObject *

pObject

)

const

Retrieve symbolic link identified by object.

Retrieve symbolic link identified by Object pointer.

Definition at line 49 of file LinkManager.cpp.

                                                                          {
  return pObject ? findLink( m_linkVector, [=]( auto* j ) { return j->object() == pObject; } ) : nullptr;
}

link() [3/6]

LinkManager::Link * LinkManager::link

(

long

id

)

Definition at line 44 of file LinkManager.cpp.

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

link() [4/6]

const LinkManager::Link * LinkManager::link

(

long

id

)

const

Retrieve symbolic link identified by ID.

Definition at line 40 of file LinkManager.cpp.

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

link() [5/6]

LinkManager::Link * LinkManager::link

(

std::string_view

path

)

Definition at line 61 of file LinkManager.cpp.

                                                        {
  return !path.empty() ? findLink( m_linkVector, [=]( auto* j ) { return j->path() == path; } ) : nullptr;
}

link() [6/6]

const LinkManager::Link * LinkManager::link

(

std::string_view

path

)

const

Retrieve symbolic link identified by path.

Retrieve symbolic link identified by Object path.

Definition at line 58 of file LinkManager.cpp.

                                                                    {
  return !path.empty() ? findLink( m_linkVector, [=]( auto* j ) { return j->path() == path; } ) : nullptr;
}

operator=() [1/2]

LinkManager & LinkManager::operator= ( LinkManager && )

default

operator=() [2/2]

LinkManager & LinkManager::operator= ( LinkManager const & )

delete

size()

long LinkManager::size ( ) const

inline

Retrieve number of link present.

Definition at line 88 of file LinkManager.h.

{ return m_linkVector.size(); }

Member Data Documentation

m_linkVector

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

private

@ 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 76 of file LinkManager.h.

---

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

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