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//--------------------------------------------------------------------------------------------------
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// $Id: ObjectService.h,v 1.7 2009/03/15 11:17:47 loizides Exp $
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//
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// ObjectService
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//
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// This service can be used in the config files to provide a simple interface to exchange objects
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// accross fillers and in principle also across modules. There are two types of lifetimes:
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// a) over the full run time
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// b) per event
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//
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// See functions add/addObjEvt and get/getObjEvt.
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//
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// Usage in config files is:
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// service = ObjectService { }
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//
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// Authors: C.Loizides
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//--------------------------------------------------------------------------------------------------
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#ifndef MITPROD_OBJECTSERVICE_OBJECTSERVICE_H
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#define MITPROD_OBJECTSERVICE_OBJECTSERVICE_H
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#include <string>
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#include "DataFormats/Provenance/interface/EventID.h"
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#include "DataFormats/Provenance/interface/Timestamp.h"
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#include "FWCore/Framework/interface/Event.h"
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#include "FWCore/Framework/interface/EventSetup.h"
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#include "FWCore/MessageLogger/interface/MessageLogger.h"
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#include "MitProd/ObjectService/interface/NamedObject.h"
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#include "MitProd/ObjectService/interface/NamedObjectOwned.h"
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#include <THashTable.h>
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namespace edm
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{
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class ActivityRegistry;
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class ParameterSet;
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class ModuleDescription;
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}
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namespace mithep
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{
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using std::string;
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class ObjectService {
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public:
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ObjectService(const edm::ParameterSet &cfg, edm::ActivityRegistry &ar);
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~ObjectService();
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template<class T> bool add(const T *obj, const char *name);
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template<class T> bool addObjEvt(T *obj, const char *name);
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template<class T> const T *get(const char *name) const;
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template<class T> const T *getObjEvt(const char *name) const;
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template<class T> T *mod(const char *name) const;
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template<class T> T *modObjEvt(const char *name) const;
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template<class T> bool add(const T *obj, const string &name)
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{ return add<T>(obj,name.c_str()); }
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template<class T> bool addObjEvt(T *obj, const string &name)
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{ return addObjEvt<T>(obj,name.c_str()); }
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template<class T> const T *get(const string &name) const
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{ return get<T>(name.c_str()); }
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template<class T> const T *getObjEvt(const string &name) const
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{ return getObjEvt<T>(name.c_str()); }
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template<class T> T *mod(const string &name) const
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{ return mod<T>(name.c_str()); }
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template<class T> T *modObjEvt(const string &name) const
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{ return modObjEvt<T>(name.c_str()); }
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private:
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void preEventProcessing(const edm::EventID &id, const edm::Timestamp &t);
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void postEventProcessing(const edm::Event &e, const edm::EventSetup &es);
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void postBeginJob();
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void postEndJob();
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THashTable obs_; //hash table holding the objects
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THashTable obsEvt_; //hash table holding the objects per event
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};
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}
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//--------------------------------------------------------------------------------------------------
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template<class T>
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bool mithep::ObjectService::add(const T *obj, const char *name)
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{
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// Add object with given name.
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if (obs_.FindObject(name)) {
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edm::LogError("ObjectService") << "Cannot add object with name " << name
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<< " since name is already used."
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<< std::endl;
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throw edm::Exception(edm::errors::Configuration, "ObjectService::add()\n")
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<< "Cannot add object with name " << name
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<< " since name is already used.\n";
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return 0;
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}
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NamedObject<T> *no = new NamedObject<T>(obj, name);
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obs_.Add(no);
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return 1;
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}
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//--------------------------------------------------------------------------------------------------
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template<class T>
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bool mithep::ObjectService::addObjEvt(T *obj, const char *name)
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{
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// Add object with given name for the current event.
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if (obsEvt_.FindObject(name)) {
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edm::LogError("ObjectService") << "Cannot add object with name " << name
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<< " to event since name is already used."
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<< std::endl;
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throw edm::Exception(edm::errors::Configuration, "ObjectService::addObjEvt()\n")
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<< "Cannot add object with name " << name
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<< " to event since name is already used.\n";
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return 0;
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}
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NamedObjectOwned<T> *no = new NamedObjectOwned<T>(obj, name);
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obsEvt_.Add(no);
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return 1;
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}
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//--------------------------------------------------------------------------------------------------
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template<class T>
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const T *mithep::ObjectService::get(const char *name) const
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{
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// Retrieve object with given name.
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TObject *o = obs_.FindObject(name);
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if (!o)
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return 0;
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const NamedObject<T> *no = static_cast<const NamedObject<T>* >(o);
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if (!no)
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return 0;
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return no->Get();
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}
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//--------------------------------------------------------------------------------------------------
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template<class T>
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const T *mithep::ObjectService::getObjEvt(const char *name) const
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{
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// Retrieve object for the current event with given name.
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TObject *o = obsEvt_.FindObject(name);
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if (!o)
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return 0;
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const NamedObjectOwned<T> *no = static_cast<const NamedObjectOwned<T>* >(o);
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if (!no)
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return 0;
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return no->Get();
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}
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//--------------------------------------------------------------------------------------------------
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template<class T>
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T *mithep::ObjectService::mod(const char *name) const
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{
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// Retrieve object with given name for write access.
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return const_cast<T*>(this->get<T>(name));
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}
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//--------------------------------------------------------------------------------------------------
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template<class T>
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T *mithep::ObjectService::modObjEvt(const char *name) const
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{
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// Retrieve object for the current event with given name for write access.
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return const_cast<T*>(this->getObjEvt<T>(name));
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}
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#endif
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