GaudiRoot::IOHandler< T > Class Template Reference

Inheritance diagram for GaudiRoot::IOHandler< T >:

Collaboration diagram for GaudiRoot::IOHandler< T >:

Public Member Functions
	IOHandler (TClass *c)
	Initializing constructor.
virtual	~IOHandler ()
	Standard destructor.
virtual void	operator() (TBuffer &b, void *obj)
	ROOT I/O callback.
virtual void	get (TBuffer &b, void *obj)
	Callback for reading the object.
virtual void	put (TBuffer &b, void *obj)
	Callback for writing the object.
template<>
void	get (TBuffer &b, void *obj)
template<>
void	put (TBuffer &b, void *obj)
template<>
void	get (TBuffer &b, void *obj)
template<>
void	put (TBuffer &b, void *obj)
template<>
void	get (TBuffer &b, void *obj)
template<>
void	put (TBuffer &, void *)

Protected Attributes
TClass *	m_root
	ROOT persistent class description.

Detailed Description

template<class T>
class GaudiRoot::IOHandler< T >

Definition at line 54 of file RootIOHandler.cpp.

Constructor & Destructor Documentation

template<class T >

GaudiRoot::IOHandler< T >::IOHandler ( TClass *  c )

inline

Initializing constructor.

Definition at line 60 of file RootIOHandler.cpp.

: m_root(c) {  }

template<class T >

virtual GaudiRoot::IOHandler< T >::~IOHandler ( )

inlinevirtual

Standard destructor.

Definition at line 62 of file RootIOHandler.cpp.

{  }

Member Function Documentation

template<class T >

virtual void GaudiRoot::IOHandler< T >::get ( TBuffer &  b, void *  obj  )

virtual

Callback for reading the object.

template<>

void GaudiRoot::IOHandler< SmartRefBase >::get	(	TBuffer &	b,
		void *	obj
	)

Definition at line 87 of file RootIOHandler.cpp.

                                                                     {
    RefAccessor r(obj);
    UInt_t start, count;
    Version_t version = b.ReadVersion(&start, &count, m_root);
    m_root->ReadBuffer(b, obj, version, start, count);
    switch( r.Base->objectType() ) {
    case SmartRefBase::DATAOBJECT:
      (*r.ObjectRef)(Gaudi::getCurrentDataObject());
      break;
    case SmartRefBase::CONTAINEDOBJECT:
      (*r.ContainedRef)(Gaudi::getCurrentDataObject());
      break;
    default:
      cout << "Hit uninitialized smartRef!!!!" << endl;
      break;
    }
  }

template<>

void GaudiRoot::IOHandler< ContainedObject >::get	(	TBuffer &	b,
		void *	obj
	)

Definition at line 164 of file RootIOHandler.cpp.

                                                                        {
    UInt_t start, count;
    Version_t version = b.ReadVersion(&start, &count, m_root);
    m_root->ReadBuffer(b, obj, version, start, count);
    ContainedObject* p = (ContainedObject*)obj;
    p->setParent((ObjectContainerBase*)Gaudi::getCurrentDataObject());
  }

template<>

void GaudiRoot::IOHandler< pool::Token >::get	(	TBuffer &	b,
		void *	obj
	)

Definition at line 176 of file RootIOHandler.cpp.

                                                                  {
    UInt_t start, count;
    pool::Token* t = (pool::Token*)obj;
    b.ReadVersion(&start, &count, m_root);
    b.ReadFastArray(&t->m_oid.first, 2);
    b.CheckByteCount(start, count, m_root);
  }

template<class T >

virtual void GaudiRoot::IOHandler< T >::operator() ( TBuffer &  b, void *  obj  )

inlinevirtual

ROOT I/O callback.

Definition at line 64 of file RootIOHandler.cpp.

                                                    {
      try {
        if ( b.IsReading() ) 
          get(b,obj);
        else
          put(b,obj);
      }
      catch( const exception& e )    {
        string err = "Class:" + string(m_root->GetName()) + "> Exception in object I/O";
        err += e.what();
        throw runtime_error(err);
      }
      catch( ... )    {
        string err = "Class:" + string(m_root->GetName()) + "> Exception in object I/O";
        throw runtime_error(err);
      }
    }

template<class T >

virtual void GaudiRoot::IOHandler< T >::put ( TBuffer &  b, void *  obj  )

virtual

Callback for writing the object.

template<>

void GaudiRoot::IOHandler< SmartRefBase >::put	(	TBuffer &	b,
		void *	obj
	)

Definition at line 105 of file RootIOHandler.cpp.

                                                                     {
    RefAccessor r(obj);
    ContainedObject* p;
    DataObject* curr, *pDO;
    int hint, link;

    curr = Gaudi::getCurrentDataObject();
    pDO  = r.ObjectRef->data();
    hint = r.ObjectRef->hintID();
    link = r.ObjectRef->linkID();
    if ( pDO )  {
      switch( r.Base->objectType() ) {
      case SmartRefBase::CONTAINEDOBJECT:
        p = r.ContainedRef->data();
        if ( p )  {
          const ObjectContainerBase* parent = p->parent();
          if ( parent )  {
            link = p->index();
            pDO  = const_cast<ObjectContainerBase*>(parent);
            break;
          }
        }
        pDO = 0;
        cout << "IOHandler<SmartRefBase>::onWrite> "
          << "Found invalid smart reference with object "
          << "having no parent."
          << endl;
        throw runtime_error("IOHandler<SmartRefBase>::onWrite> "
          "Found invalid smart reference with object "
          "having no parent.");
        break;
      case SmartRefBase::DATAOBJECT:
        link = StreamBuffer::INVALID;
        break;
      default:
        break;
      }
      if ( pDO == last_link_object )  {
        r.Base->set(curr, last_link_hint, link);
        m_root->WriteBuffer(b, obj);
        return;
      }
      else if ( pDO ) {
        LinkManager* mgr = curr->linkMgr();
        IRegistry*   reg = pDO->registry();
        if ( reg && mgr )  {
          hint = mgr->addLink(reg->identifier(), pDO);
          last_link_hint   = hint;
          last_link_object = pDO;
        }
      }
      else {
        hint = link = StreamBuffer::INVALID;
      }
    }
    r.Base->set(curr, hint, link);
    m_root->WriteBuffer(b, obj);
  }

template<>

void GaudiRoot::IOHandler< ContainedObject >::put	(	TBuffer &	b,
		void *	obj
	)

Definition at line 172 of file RootIOHandler.cpp.

                                                                        {
    m_root->WriteBuffer(b, obj);
  }

template<>

void GaudiRoot::IOHandler< pool::Token >::put	(	TBuffer &	,
		void *
	)

Definition at line 184 of file RootIOHandler.cpp.

                                                              {
    throw runtime_error("Writing POOL files is not implemented!");
  }

Member Data Documentation

template<class T >

TClass* GaudiRoot::IOHandler< T >::m_root

protected

ROOT persistent class description.

Definition at line 57 of file RootIOHandler.cpp.

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

• /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v23r8/RootCnv/src/RootIOHandler.cpp