SequentialOutputStream Class Reference

Extension of OutputStream to write run records after last event. More...

#include <SequentialOutputStream.h>

Inheritance diagram for SequentialOutputStream:

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Collaboration diagram for SequentialOutputStream:

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List of all members.

Public Member Functions
	SequentialOutputStream (const std::string &nam, ISvcLocator *svc)
	Standard algorithm Constructor.
virtual	~SequentialOutputStream ()
	Standard Destructor.
virtual StatusCode	execute ()
	Working entry point.
Protected Member Functions
virtual StatusCode	writeObjects ()
	OutputStream override: Select the different objects and write them to file.
Private Member Functions
void	makeFilename ()
Private Attributes
unsigned int	m_eventsPerFile
unsigned int	m_nNumbersAdded
bool	m_numericFilename
unsigned int	m_events
	Number of events written to this output stream.
unsigned int	m_iFile

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Detailed Description

Extension of OutputStream to write run records after last event.

Author:

M.Frank

Version:

1.0

Definition at line 13 of file SequentialOutputStream.h.

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Constructor & Destructor Documentation

SequentialOutputStream::SequentialOutputStream	(	const std::string &	nam,
		ISvcLocator *	svc
	)

Standard algorithm Constructor.

Definition at line 27 of file SequentialOutputStream.cpp.

: OutputStream( name, svc ), m_events( 0 ), m_iFile( 1 )
{
   declareProperty( "EventsPerFile", m_eventsPerFile
                    = boost::numeric::bounds< unsigned int>::highest() );
   declareProperty( "NumericFilename", m_numericFilename = false );
   declareProperty( "NumbersAdded", m_nNumbersAdded = 6 );
}

virtual SequentialOutputStream::~SequentialOutputStream

(

)

[inline, virtual]

Standard Destructor.

Definition at line 25 of file SequentialOutputStream.h.

{}

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Member Function Documentation

StatusCode SequentialOutputStream::writeObjects

(

)

[protected, virtual]

OutputStream override: Select the different objects and write them to file.

Reimplemented from OutputStream.

Definition at line 38 of file SequentialOutputStream.cpp.

{
   try {
      makeFilename();
   } catch ( const GaudiException& except ) {
      MsgStream log(msgSvc(), name());
      log << MSG::ERROR << except.message() << endmsg;
      return StatusCode::FAILURE;
   }
   return OutputStream::writeObjects();
}

StatusCode SequentialOutputStream::execute

(

)

[virtual]

Working entry point.

Reimplemented from OutputStream.

Definition at line 51 of file SequentialOutputStream.cpp.

{
   // Clear any previously existing item list
   clearSelection();
   // Test whether this event should be output
   if ( isEventAccepted() )  {
      StatusCode sc = writeObjects();
      clearSelection();
      m_events++;
      return sc;
   }
   return StatusCode::SUCCESS;
}

void SequentialOutputStream::makeFilename

(

)

[private]

Definition at line 66 of file SequentialOutputStream.cpp.

{
   if ( m_events % m_eventsPerFile != 0 ) return;

   bf::path outputPath( m_outputName );
   string filename = outputPath.filename();
   bf::path dir = outputPath.parent_path();
   string stem = outputPath.stem();
   string extension = outputPath.extension();

   if ( !dir.empty() ) {
      if ( !bf::exists( dir ) ) {
         stringstream stream;
         stream << "Directory " << dir << " does not exist.";
         throw GaudiException( stream.str(), "error", StatusCode::FAILURE );
      }
   }
   
   if ( m_numericFilename ) {
      if ( m_events == 0 ) {
         try {
            m_iFile = lexical_cast< unsigned int >( stem );
         } catch( const bad_lexical_cast& /* cast */ ) {
            stringstream stream;
            stream << "Filename " << filename 
                   << " is not a number, which was needed.";
            throw GaudiException( stream.str(), "error", StatusCode::FAILURE );
         }
      }
      stringstream iFileStream;
      iFileStream << m_iFile;
      string iFile( iFileStream.str() );
      unsigned int length = 0;

      if ( stem.length() > iFile.length() ) {
         length = stem.length() - iFile.length();
      }

      stringstream name;
      if ( !dir.empty() ) {
         name << dir << "/";
      }
      for ( unsigned int i = 0; i < length; ++i ) {
         name << "0";
      }
      name << iFile << extension;
      m_outputName = name.str();
   } else {
      if ( m_iFile != 1 ) {
         size_t pos = stem.rfind( "_" );
         stem = stem.substr( 0, pos );
      }

      stringstream iFileStream;
      iFileStream << m_iFile;
      string iFile( iFileStream.str() );

      unsigned int length = 0;
      if ( m_nNumbersAdded > iFile.length() ) {
         length = m_nNumbersAdded - iFile.length();
      }

      stringstream name;
      name << dir << "/" << stem;
      for ( unsigned int i = 0; i < length; ++i ) {
         if ( i == 0 ) name << "_";
         name << "0";
      }
      name << iFile << extension;
      m_outputName = name.str();
   }
   ++m_iFile;
}

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Member Data Documentation

unsigned int SequentialOutputStream::m_eventsPerFile [private]

Definition at line 32 of file SequentialOutputStream.h.

unsigned int SequentialOutputStream::m_nNumbersAdded [private]

Definition at line 33 of file SequentialOutputStream.h.

bool SequentialOutputStream::m_numericFilename [private]

Definition at line 34 of file SequentialOutputStream.h.

unsigned int SequentialOutputStream::m_events [private]

Number of events written to this output stream.

Reimplemented from OutputStream.

Definition at line 37 of file SequentialOutputStream.h.

unsigned int SequentialOutputStream::m_iFile [private]

Definition at line 38 of file SequentialOutputStream.h.

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

• /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v21r9/GaudiSvc/src/PersistencySvc/SequentialOutputStream.h
• /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v21r9/GaudiSvc/src/PersistencySvc/SequentialOutputStream.cpp