Simple convenient iterator class for LCCollections that saves some boiler plate code. More...

Public Member Functions
	LCIterator (EVENT::LCEvent *evt, const std::string &name)
	Constructor that reads the collection with the given name from the event - note: no exception is thrown if the collection is not in the event, this will behave the same as an empty collection - use operator() to test, if the collection exists.

	LCIterator (EVENT::LCCollection *col)
	Constructor for the given collection.

T *	next ()
	Returns the next element as long as there is one, otherwise 0 is returned.

int	size ()
	Size of the collection.

EVENT::LCCollection *	operator-> ()
	Serves as a handle to the LCCollection itself, to provide access to the collection parameters etc.

EVENT::LCCollection *	operator() ()
	Return pointer to LCCollection, e.g. More...

Detailed Description

Simple convenient iterator class for LCCollections that saves some boiler plate code.

LCIterators can be constructed either form an LCCollection or from the LCEvent and and a collection name.

Examples:

 // ------ use with while():
 LCIterator<TrackerHit> it( evt, "VXDCollection" ) ;
 while( TrackerHit* hit = it.next()  ){

    hitMap[ hit->getCellID0() ] = hit ;
 }

 // --- with for() :
 for(  LCIterator<Track> it( col ) ;  Track* trk = it.next()  ; ) {

    std::cout << trk->getTrackState( TrackState::AtIP ) << std::endl  ;
 }

Member Function Documentation

template<class T>

EVENT::LCCollection* UTIL::LCIterator< T >::operator() ( )

inline

Return pointer to LCCollection, e.g.

for testing whether the collections was in the event.

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