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#ifndef DataFormats_FWLite_Handle_h
#define DataFormats_FWLite_Handle_h
// -*- C++ -*-
//
// Package: FWLite
// Class : Handle
//
/**\class Handle Handle.h DataFormats/FWLite/interface/Handle.h
Description: <one line class summary>
Usage:
<usage>
*/
//
// Original Author: Chris Jones
// Created: Tue May 8 15:01:26 EDT 2007
//
// system include files
// user include files
namespace edm {
template <typename T>
class Wrapper;
}
#include "DataFormats/FWLite/interface/EventBase.h"
#include "DataFormats/FWLite/interface/ErrorThrower.h"
#include "DataFormats/Common/interface/Wrapper.h"
// forward declarations
namespace fwlite {
class ErrorThrower;
class EventBase;
template <class T>
class Handle {
public:
// this typedef is to avoid a Cint bug where calling
// edm::Wrapper<T>::typeInfo() fails for some types with
// very long expansions. First noticed for the expansion
// of reco::JetTracksAssociation::Container
typedef edm::Wrapper<T> TempWrapT;
Handle() : data_(nullptr), errorThrower_(ErrorThrower::unsetErrorThrower()) {}
~Handle() { delete errorThrower_; }
Handle(const Handle<T>& iOther)
: data_(iOther.data_), errorThrower_(iOther.errorThrower_ ? iOther.errorThrower_->clone() : nullptr) {}
const Handle<T>& operator=(const Handle<T>& iOther) {
Handle<T> temp(iOther);
swap(temp);
return *this;
}
// ---------- const member functions ---------------------
bool isValid() const { return data_ != nullptr; }
///Returns true only if Handle was used in a 'get' call and the data could not be found
bool failedToGet() const { return errorThrower_ != nullptr; }
T const* product() const {
check();
return data_;
}
const T* ptr() const {
check();
return data_;
}
const T& ref() const {
check();
return *data_;
}
const T* operator->() const {
check();
return data_;
}
const T& operator*() const {
check();
return *data_;
}
// ---------- static member functions --------------------
// ---------- member functions ---------------------------
/*
void getByBranchName(const fwlite::Event& iEvent, const char* iBranchName) {
iEvent.getByBranchName(edm::Wrapper<T>::typeInfo(), iBranchName, data_);
}
*/
// P can be Run, Event, or LuminosityBlock
template <class P>
void getByLabel(const P& iP,
const char* iModuleLabel,
const char* iProductInstanceLabel = nullptr,
const char* iProcessLabel = nullptr) {
TempWrapT* temp;
void* pTemp = &temp;
iP.getByLabel(TempWrapT::typeInfo(), iModuleLabel, iProductInstanceLabel, iProcessLabel, pTemp);
delete errorThrower_;
errorThrower_ = nullptr;
if (nullptr == temp) {
errorThrower_ = ErrorThrower::errorThrowerBranchNotFoundException(
TempWrapT::typeInfo(), iModuleLabel, iProductInstanceLabel, iProcessLabel);
return;
}
data_ = temp->product();
if (data_ == nullptr) {
errorThrower_ = ErrorThrower::errorThrowerProductNotFoundException(
TempWrapT::typeInfo(), iModuleLabel, iProductInstanceLabel, iProcessLabel);
}
}
// void getByLabel(const fwlite::Event& iEvent,
// const char* iModuleLabel,
// const char* iProductInstanceLabel = nullptr,
// const char* iProcessLabel = nullptr) {
// TempWrapT* temp;
// void* pTemp = &temp;
// iEvent.getByLabel(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel,
// pTemp);
// delete errorThrower_;
// errorThrower_ = nullptr;
// if(nullptr == temp) {
// errorThrower_=ErrorThrower::errorThrowerBranchNotFoundException(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel);
// return;
// }
// data_ = temp->product();
// if(data_ == nullptr) {
// errorThrower_=ErrorThrower::errorThrowerProductNotFoundException(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel);
// }
// }
//
// void getByLabel(const fwlite::ChainEvent& iEvent,
// const char* iModuleLabel,
// const char* iProductInstanceLabel = nullptr,
// const char* iProcessLabel = nullptr) {
// TempWrapT* temp;
// void* pTemp = &temp;
// iEvent.getByLabel(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel,
// pTemp);
// delete errorThrower_;
// errorThrower_ = nullptr;
// if(nullptr == temp) {
// errorThrower_=ErrorThrower::errorThrowerBranchNotFoundException(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel);
// return;
// }
// data_ = temp->product();
// if(data_ == nullptr) {
// errorThrower_=ErrorThrower::errorThrowerProductNotFoundException(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel);
// }
// }
//
//
// void getByLabel(const fwlite::MultiChainEvent& iEvent,
// const char* iModuleLabel,
// const char* iProductInstanceLabel = nullptr,
// const char* iProcessLabel = nullptr) {
// TempWrapT* temp;
// void* pTemp = &temp;
// iEvent.getByLabel(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel,
// pTemp);
// if ( nullptr != errorThrower_ ) delete errorThrower_;
// errorThrower_ = nullptr;
// if(nullptr == temp) {
// errorThrower_=ErrorThrower::errorThrowerBranchNotFoundException(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel);
// return;
// }
// data_ = temp->product();
// if(data_ == nullptr) {
// errorThrower_=ErrorThrower::errorThrowerProductNotFoundException(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel);
// }
// }
const std::string getBranchNameFor(const fwlite::EventBase& iEvent,
const char* iModuleLabel,
const char* iProductInstanceLabel = nullptr,
const char* iProcessLabel = nullptr) {
return iEvent.getBranchNameFor(TempWrapT::typeInfo(), iModuleLabel, iProductInstanceLabel, iProcessLabel);
}
// const std::string getBranchNameFor(const fwlite::Event& iEvent,
// const char* iModuleLabel,
// const char* iProductInstanceLabel = nullptr,
// const char* iProcessLabel = nullptr) {
// return iEvent.getBranchNameFor(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel);
// }
//
// const std::string getBranchNameFor(const fwlite::ChainEvent& iEvent,
// const char* iModuleLabel,
// const char* iProductInstanceLabel = nullptr,
// const char* iProcessLabel = nullptr) {
// return iEvent.getBranchNameFor(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel);
// }
//
//
//
// const std::string getBranchNameFor(const fwlite::MultiChainEvent& iEvent,
// const char* iModuleLabel,
// const char* iProductInstanceLabel = nullptr,
// const char* iProcessLabel = nullptr) {
// return iEvent.getBranchNameFor(TempWrapT::typeInfo(),
// iModuleLabel,
// iProductInstanceLabel,
// iProcessLabel);
// }
void swap(Handle<T>& iOther) {
const T* temp = data_;
data_ = iOther.data_;
iOther.data_ = temp;
ErrorThrower const* tempE = errorThrower_;
errorThrower_ = iOther.errorThrower_;
iOther.errorThrower_ = tempE;
}
private:
void check() const {
if (errorThrower_) {
errorThrower_->throwIt();
}
}
// ---------- member data --------------------------------
const T* data_;
ErrorThrower const* errorThrower_;
};
} // namespace fwlite
#endif
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