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cond::BlobWriter Class Reference

#include <IOPool/CMSSealPlugins/plugins/PrimitivesContainerStreamer.h>

List of all members.

Public Member Functions
	BlobWriter (const ROOT::Reflex::Type &type)
	Constructor.
const coral::Blob &	write (const void *addressOfInputData)
	Streams an object an returns by constant reference the underlying blob.
virtual	~BlobWriter ()
	Empty destructor.
Private Attributes
coral::Blob	m_blob
	The blob data.
ROOT::Reflex::Type	m_type
	The type.

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Detailed Description

Definition at line 10 of file PrimitivesContainerStreamer.h.

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Constructor & Destructor Documentation

cond::BlobWriter::BlobWriter

(

const ROOT::Reflex::Type &

type

)

[explicit]

Constructor.

Definition at line 9 of file PrimitivesContainerStreamer.cc.

                                                      :
  m_type( type ),
  m_blob()
{}

cond::BlobWriter::~BlobWriter

(

)

[virtual]

Empty destructor.

Definition at line 14 of file PrimitivesContainerStreamer.cc.

{}

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Member Function Documentation

const coral::Blob & cond::BlobWriter::write

(

const void *

addressOfInputData

)

Streams an object an returns by constant reference the underlying blob.

Definition at line 18 of file PrimitivesContainerStreamer.cc.

References Exception, m_blob, and m_type.

{
  // std::cout<<"cond::BlobReader::write"<<std::endl;
  ROOT::Reflex::Object theContainer( m_type, const_cast<void*>( addressOfInputData ) );
  //get the container size
  ROOT::Reflex::Member sizeMethod = m_type.MemberByName( "size" );
  if ( ! sizeMethod )
    throw cond::Exception( "BlobWriter::write No size method is defined for the container" );
  ROOT::Reflex::Object ret = sizeMethod.Invoke(theContainer);
  if( !ret.TypeOf() || !ret.Address() )
    throw cond::Exception( "BlobWriter::write Could not invoke the size method on the container" );
  size_t containerSize = *(static_cast<size_t*>(ret.Address()));
  if(containerSize==0){
    //std::cout<<"empty container nothing to write"<<std::endl;
    return m_blob;
  }
  // std::cout<<"container size "<<containerSize<<std::endl;
  //get the element size
  //size_t nargs=m_type.TemplateArgumentSize();
  //std::cout<<"template arguments to vector "<<nargs<<std::endl;
  size_t elementSize=m_type.TemplateArgumentAt(0).SizeOf();
  //std::cout<<"elementSize "<<elementSize<<std::endl;
  ROOT::Reflex::Member beginMethod = m_type.MemberByName( "begin" );
  if ( ! beginMethod )
    throw cond::Exception( "BlobWriter::write No begin method is defined for the container" );
  ROOT::Reflex::Type iteratorType = beginMethod.TypeOf().ReturnType();
  ROOT::Reflex::Member dereferenceMethod = iteratorType.MemberByName( "operator*" );
  if ( ! dereferenceMethod )
    throw cond::Exception( "BlobWriter::write Could not retrieve the dereference method of the container's iterator" );
  //size_t elementSize = dereferenceMethod.TypeOf().ReturnType().SizeOf();
  // Create an iterator
  ROOT::Reflex::Object iteratorObject = beginMethod.Invoke( ROOT::Reflex::Object( m_type, const_cast< void * > ( addressOfInputData ) ) );
  //get first element address
  void* elementAddress = dereferenceMethod.Invoke( iteratorObject ).Address();
  m_blob.resize( containerSize * elementSize );
  void* startingAddress = m_blob.startingAddress();
  //std::cout<<"dest Address "<<elementAddress <<std::endl;
  //std::cout<<"src address"<<addressOfInputData <<std::endl;
  ::memcpy( startingAddress, elementAddress, containerSize*elementSize );
  iteratorObject.Destruct();
  //std::cout<<"new blob size "<<m_blob.size()<<std::endl;
  return m_blob;
}

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Member Data Documentation

coral::Blob cond::BlobWriter::m_blob [private]

The blob data.

Definition at line 27 of file PrimitivesContainerStreamer.h.

Referenced by write().

ROOT::Reflex::Type cond::BlobWriter::m_type [private]

The type.

Definition at line 24 of file PrimitivesContainerStreamer.h.

Referenced by write().

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

• IOPool/CMSSealPlugins/plugins/PrimitivesContainerStreamer.h
• IOPool/CMSSealPlugins/plugins/PrimitivesContainerStreamer.cc

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