Gaudi Framework, version v23r0 |
Home | Generated: Mon Jan 30 2012 |
The Event Selector Interface. More...
#include <GaudiKernel/IEvtSelector.h>
Classes | |
class | Context |
Public Member Functions | |
DeclareInterfaceID (IEvtSelector, 2, 0) | |
InterfaceID. | |
virtual StatusCode | createContext (Context *&c) const =0 |
Create and return a context object that will keep track of the state of selection. | |
virtual StatusCode | next (Context &c) const =0 |
Fetch the next event or the first event if it will be use soon after the creation of the context. | |
virtual StatusCode | next (Context &c, int jump) const =0 |
Same of next(const Context&) plus the possibility to jump the next n-1 events. | |
virtual StatusCode | previous (Context &c) const =0 |
Fetch the previous event. | |
virtual StatusCode | previous (Context &c, int jump) const =0 |
Same of previous(Context& c) the possibility to jump the previous n-1 events. | |
virtual StatusCode | last (Context &refContext) const =0 |
Access last item in the iteration. | |
virtual StatusCode | rewind (Context &c) const =0 |
Will set the state of the context in a way that the next event read is the first of the list. | |
virtual StatusCode | createAddress (const Context &c, IOpaqueAddress *&iop) const =0 |
Create an IOpaqueAddress object from the event fetched. | |
virtual StatusCode | releaseContext (Context *&) const =0 |
Release the Context object. | |
virtual StatusCode | resetCriteria (const std::string &cr, Context &c) const =0 |
Will set a new criteria for the selection of the next list of events and will change the state of the context in a way to point to the new list. |
The Event Selector Interface.
The EventSelector component is able to produce a list of event given a set of stream specifications.
Definition at line 19 of file IEvtSelector.h.
virtual StatusCode IEvtSelector::createAddress | ( | const Context & | c, |
IOpaqueAddress *& | iop | ||
) | const [pure virtual] |
Create an IOpaqueAddress object from the event fetched.
c | Reference to the Context object. |
iop | Refernce pointer to a IOpaqueAddress object |
Implemented in EventCollectionSelector, EventSelector, and Gaudi::RootEvtSelector.
virtual StatusCode IEvtSelector::createContext | ( | Context *& | c ) | const [pure virtual] |
Create and return a context object that will keep track of the state of selection.
c | Reference of a pointer to a Context object. |
Implemented in EventCollectionSelector, EventSelector, and Gaudi::RootEvtSelector.
IEvtSelector::DeclareInterfaceID | ( | IEvtSelector | , |
2 | , | ||
0 | |||
) |
virtual StatusCode IEvtSelector::last | ( | Context & | refContext ) | const [pure virtual] |
Access last item in the iteration.
refContext | [IN/OUT] Reference to the Context object. |
Implemented in EventCollectionSelector, EventSelector, and Gaudi::RootEvtSelector.
virtual StatusCode IEvtSelector::next | ( | Context & | c, |
int | jump | ||
) | const [pure virtual] |
Same of next(const Context&) plus the possibility to jump the next n-1 events.
c | Reference to the Context object. |
jump | The event to jump to from the current event. |
Implemented in EventCollectionSelector, EventSelector, and Gaudi::RootEvtSelector.
virtual StatusCode IEvtSelector::next | ( | Context & | c ) | const [pure virtual] |
Fetch the next event or the first event if it will be use soon after the creation of the context.
It will return StatusCode::FAILURE if there have been problem in the fetching or it has been reached the end of the list of events.
c | Reference to the Context object. |
Implemented in EventCollectionSelector, EventSelector, and Gaudi::RootEvtSelector.
virtual StatusCode IEvtSelector::previous | ( | Context & | c ) | const [pure virtual] |
Fetch the previous event.
It will return StatusCode::FAILURE if there have been problem in the fetching or it has been reached the begin of the list of events.
c | Reference to the Context object. |
Implemented in EventCollectionSelector, EventSelector, and Gaudi::RootEvtSelector.
virtual StatusCode IEvtSelector::previous | ( | Context & | c, |
int | jump | ||
) | const [pure virtual] |
Same of previous(Context& c) the possibility to jump the previous n-1 events.
c | Reference to the Context object. |
jump | The event to jump to from the current event. |
Implemented in EventCollectionSelector, EventSelector, and Gaudi::RootEvtSelector.
virtual StatusCode IEvtSelector::releaseContext | ( | Context *& | ) | const [pure virtual] |
Release the Context object.
c | Reference pointer to the Context object. |
Implemented in EventCollectionSelector, EventSelector, and Gaudi::RootEvtSelector.
virtual StatusCode IEvtSelector::resetCriteria | ( | const std::string & | cr, |
Context & | c | ||
) | const [pure virtual] |
Will set a new criteria for the selection of the next list of events and will change the state of the context in a way to point to the new list.
cr | The new criteria string. |
c | Reference pointer to the Context object. |
Implemented in EventCollectionSelector, EventSelector, and Gaudi::RootEvtSelector.
virtual StatusCode IEvtSelector::rewind | ( | Context & | c ) | const [pure virtual] |
Will set the state of the context in a way that the next event read is the first of the list.
c | Reference to the Context object. |
Implemented in EventCollectionSelector, EventSelector, and Gaudi::RootEvtSelector.