Abstract handler for conditions data. More...

#include <IConditionsHandler.hh>

Inheritance diagram for lccd::IConditionsHandler:

Public Member Functions
virtual void	updateEvent (lcio::LCEvent *evt)=0
	Retrieves the new conditions data if required by evt->getTimestamp() and adds a collection to event with its name. More...

virtual void	update (LCCDTimeStamp timestamp)=0
	Retrieves the new conditions data if required by timestamp. More...

virtual lcio::LCCollection *	currentCollection ()=0
	Returns the current collection of conditions data.

virtual void	registerChangeListener (IConditionsChangeListener *cl)=0
	Every IConditionsChangeListener will be notified if the conditions data of this instance has changed.

virtual void	removeChangeListener (IConditionsChangeListener *cl)=0
	Remove the specified listener from list of registered listeners ;.

virtual bool	isChangeListenerRegistered (IConditionsChangeListener *cl)=0
	checks if the changeListner is Registered

virtual void	registerDefaultCollection (lcio::LCCollection *col)=0
	Register a pointer to a default collection which will be passed to the IConditionsChangeListener if no data can be found for a given time stamp.

virtual lcio::LCCollection *	defaultCollection ()=0
	The default collection registered with the handler.

virtual lcio::LCCollection *	lastValidCollection ()=0
	The last valid collection held by the handler.

virtual const std::string	name ()=0
	The name of this conditions handler - used, e.g. More...

virtual LCCDTimeStamp	validSince ()=0
	First timestamp for which the current conditions data is valid.

virtual LCCDTimeStamp	validTill ()=0
	Last timestamp for which the current conditions data is valid.

Detailed Description

Abstract handler for conditions data.

Need one implementation instance for every data set. Check documentation of concrete implemetation for behaviour on update, e.g. a simple file handler might ignore calls to update and always hold the same data set.