SG::ReadMetaHandle< T > Class Template Reference

#include <MetaCont.h>

Collaboration diagram for SG::ReadMetaHandle< T >:

Public Types
typedef T *	pointer_type
typedef const T *	const_pointer_type
typedef T &	reference_type
typedef const T &	const_reference_type

Public Member Functions
	ReadMetaHandle (const SG::ReadMetaHandleKey< T > &key)
	ReadMetaHandle (const SG::ReadMetaHandleKey< T > &key, const EventContext &ctx)
	~ReadMetaHandle ()
const_pointer_type	retrieve ()
const_pointer_type	retrieve (const SG::SourceID &t)
const_pointer_type	operator-> ()
const_pointer_type	operator* ()
bool	isValid ()

Private Member Functions
bool	initMetaHandle ()

Private Attributes
SG::SourceID	m_sid
const MetaCont< T > *	m_cont {nullptr}
T *	m_ent {nullptr}
const SG::ReadMetaHandleKey< T > &	m_hkey

Detailed Description

template<typename T>
class SG::ReadMetaHandle< T >

Definition at line 21 of file MetaCont.h.

Member Typedef Documentation

const_pointer_type

template<typename T >

typedef const T* SG::ReadMetaHandle< T >::const_pointer_type

Definition at line 31 of file ReadMetaHandle.h.

const_reference_type

template<typename T >

typedef const T& SG::ReadMetaHandle< T >::const_reference_type

Definition at line 33 of file ReadMetaHandle.h.

pointer_type

template<typename T >

typedef T* SG::ReadMetaHandle< T >::pointer_type

Definition at line 30 of file ReadMetaHandle.h.

reference_type

template<typename T >

typedef T& SG::ReadMetaHandle< T >::reference_type

Definition at line 32 of file ReadMetaHandle.h.

Constructor & Destructor Documentation

ReadMetaHandle() [1/2]

template<typename T >

SG::ReadMetaHandle< T >::ReadMetaHandle

(

const SG::ReadMetaHandleKey< T > &

key

)

Definition at line 65 of file ReadMetaHandle.h.

    : ReadMetaHandle(key, Gaudi::Hive::currentContext())
    { 
    }

ReadMetaHandle() [2/2]

template<typename T >

SG::ReadMetaHandle< T >::ReadMetaHandle	(	const SG::ReadMetaHandleKey< T > &	key,
		const EventContext &	ctx
	)

Definition at line 73 of file ReadMetaHandle.h.

    : m_sid( Atlas::getExtendedEventContext(ctx).proxy()->sourceID() )
    , m_cont( key.getContainer() )
    , m_hkey(key)
  {
    MsgStream msg(Athena::getMessageSvc(), "ReadMetaHandle");
    if (ATH_UNLIKELY(!m_hkey.isInit())) {
      msg << MSG::ERROR 
      << "ReadMetaHandleKey " << key.objKey() << " was not initialized"
      << endmsg;
      throw std::runtime_error("ReadMetaHandle: ReadMetaHandleKey was not initialized");
    }
 
    if (ATH_UNLIKELY(m_cont == 0)) {
      // Try to retrieve it
      StoreGateSvc* ms = m_hkey.getStore();
      MetaContBase* cb{nullptr};
      if(ms->retrieve(cb, m_hkey.key()).isFailure()) {
    msg << MSG::ERROR
        << "can't retrieve " << m_hkey.fullKey()
            << " via base class" << endmsg;
        throw std::runtime_error("ReadCondHandle: ptr to CondCont<T> is zero");
      }
      else {
    m_cont = dynamic_cast< MetaCont<T>* > (cb);
    if(!m_cont) {
      msg << MSG::ERROR
          << "can't dcast MetaContBase to " << m_hkey.fullKey()
              << endmsg;
          throw std::runtime_error("ReadMetaHandle: ptr to MetaCont<T> is zero");
    }
      }
    }
  }

~ReadMetaHandle()

template<typename T >

SG::ReadMetaHandle< T >::~ReadMetaHandle ( )

inline

Definition at line 40 of file ReadMetaHandle.h.

{};

Member Function Documentation

initMetaHandle()

template<typename T >

bool SG::ReadMetaHandle< T >::initMetaHandle

private

Definition at line 113 of file ReadMetaHandle.h.

  {
 
    if (m_ent) return true;
 
    // Initialize sid from dbKey found at ReadMetaHandleKey initialize
//    m_sid = m_hkey.dbKey();    ???? Do I need this ????
 
    if ( ATH_UNLIKELY(! m_cont->find(m_sid, m_ent)) ) {
      std::ostringstream ost;
      m_cont->list(ost);
      MsgStream msg(Athena::getMessageSvc(), "ReadMetaHandle");
      msg << MSG::ERROR 
          << "ReadMetaHandle:: could not find current SourceID " 
          << m_sid  << " for key " << m_hkey.objKey() << "\n"
          << ost.str() << endmsg;
      m_ent = nullptr;
      return false;
    }
 
    return true;
  }

isValid()

template<typename T >

bool SG::ReadMetaHandle< T >::isValid

Definition at line 182 of file ReadMetaHandle.h.

                              {
 
    return initMetaHandle();
  }

operator*()

template<typename T >

const_pointer_type SG::ReadMetaHandle< T >::operator* ( )

inline

Definition at line 46 of file ReadMetaHandle.h.

{ return  retrieve(); }   

operator->()

template<typename T >

const_pointer_type SG::ReadMetaHandle< T >::operator-> ( )

inline

Definition at line 45 of file ReadMetaHandle.h.

{ return  retrieve(); }

retrieve() [1/2]

template<typename T >

const T * SG::ReadMetaHandle< T >::retrieve

Definition at line 140 of file ReadMetaHandle.h.

  {
    
    if (m_ent == 0) {
      if (!initMetaHandle()) {
        return nullptr;
      }
    }
 
    return m_ent;
  }

retrieve() [2/2]

template<typename T >

const T * SG::ReadMetaHandle< T >::retrieve

(

const SG::SourceID &

t

)

Definition at line 156 of file ReadMetaHandle.h.

  {
    if (sid == m_sid) {
      return retrieve();
    }
 
    pointer_type obj(0);
    if (! (m_cont->find(sid, obj) ) ) {
      std::ostringstream ost;
      m_cont->list(ost);
      MsgStream msg(Athena::getMessageSvc(), "ReadMetaHandle");
      msg << MSG::ERROR 
          << "ReadMetaHandle::retrieve() could not find SourceID " 
          << sid  << " for key " << m_hkey.objKey() << "\n"
          << ost.str()
          << endmsg;
      return nullptr;
    }
 
    return obj;
  }

Member Data Documentation

m_cont

template<typename T >

const MetaCont<T>* SG::ReadMetaHandle< T >::m_cont {nullptr}

private

Definition at line 55 of file ReadMetaHandle.h.

m_ent

template<typename T >

T* SG::ReadMetaHandle< T >::m_ent {nullptr}

private

Definition at line 56 of file ReadMetaHandle.h.

m_hkey

template<typename T >

const SG::ReadMetaHandleKey<T>& SG::ReadMetaHandle< T >::m_hkey

private

Definition at line 58 of file ReadMetaHandle.h.

m_sid

template<typename T >

SG::SourceID SG::ReadMetaHandle< T >::m_sid

private

Definition at line 54 of file ReadMetaHandle.h.

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

• MetaCont.h
• ReadMetaHandle.h