podio::PythonEventStore Class Reference

#include <PythonEventStore.h>

Public Member Functions
	PythonEventStore (const char *filename)
	constructor from filename
const podio::CollectionBase *	get (const char *name)
	access a collection.
void	endOfEvent ()
	signify end of event
void	goToEvent (unsigned ievent)
	go to a given event
unsigned	getEntries () const
	get number of entries in the tree
bool	isZombie () const
	is the input file accessible?
bool	isValid () const
void	close ()
const std::vector< std::string > &	getCollectionNames () const
	list available collections
const podio::GenericParameters &	getEventMetaData ()

Detailed Description

Definition at line 13 of file PythonEventStore.h.

Constructor & Destructor Documentation

PythonEventStore()

podio::PythonEventStore::PythonEventStore

(

const char *

filename

)

constructor from filename

Definition at line 10 of file PythonEventStore.cc.

                                                        : m_reader(podio::createReader(name)), m_store() {
  std::ifstream inputfile(name);
  m_isZombie = inputfile.good() ? false : true;
 
  if (m_reader) {
    if (m_isZombie && dynamic_cast<podio::ROOTReader*>(m_reader.get())) {
      // the file could be a remote file that we cannot access but root
      // knows how to handle via the xrootd protocol.
      // if that is the case we ignore m_isZombie.
      if (!std::string("root:/").compare(0, 6, name, 6)) {
        m_isZombie = false;
      }
    }
  }
 
  if (!m_isZombie) {
    // at this point we have a combination of file and reader that should work
    m_reader->openFile(name);
    m_store.setReader(m_reader.get());
  }
}

Member Function Documentation

close()

void podio::PythonEventStore::close ( )

inline

Definition at line 38 of file PythonEventStore.h.

               {
    m_reader->closeFile();
  }

endOfEvent()

void podio::PythonEventStore::endOfEvent

(

)

signify end of event

Definition at line 38 of file PythonEventStore.cc.

                                       {
  m_store.clear();
  m_reader->endOfEvent();
}

get()

const podio::CollectionBase * podio::PythonEventStore::get

(

const char *

name

)

access a collection.

Definition at line 32 of file PythonEventStore.cc.

                                                                      {
  const podio::CollectionBase* coll(nullptr);
  m_store.get(name, coll);
  return coll;
}

getCollectionNames()

const std::vector< std::string > & podio::PythonEventStore::getCollectionNames

(

)

const

list available collections

Definition at line 52 of file PythonEventStore.cc.

                                                                            {
  return m_store.getCollectionIDTable()->names();
}

getEntries()

unsigned podio::PythonEventStore::getEntries

(

)

const

get number of entries in the tree

Definition at line 48 of file PythonEventStore.cc.

                                                 {
  return m_reader->getEntries();
}

getEventMetaData()

const podio::GenericParameters & podio::PythonEventStore::getEventMetaData ( )

inline

Definition at line 45 of file PythonEventStore.h.

                                                   {
    return m_store.getEventMetaData();
  }

goToEvent()

void podio::PythonEventStore::goToEvent

(

unsigned

ievent

)

go to a given event

Definition at line 43 of file PythonEventStore.cc.

                                                     {
  m_store.clear();
  m_reader->goToEvent(ievent);
}

isValid()

bool podio::PythonEventStore::isValid ( ) const

inline

Definition at line 35 of file PythonEventStore.h.

                       {
    return m_reader && m_reader->isValid();
  }

isZombie()

bool podio::PythonEventStore::isZombie ( ) const

inline

is the input file accessible?

Definition at line 31 of file PythonEventStore.h.

                        {
    return m_isZombie;
  }

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

• PythonEventStore.h
• PythonEventStore.cc