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#ifndef DataFormats_Common_RefVectorHolder_h
#define DataFormats_Common_RefVectorHolder_h
#include "DataFormats/Common/interface/CMS_CLASS_VERSION.h"
#include "DataFormats/Common/interface/RefVectorHolderBase.h"
#include "FWCore/Utilities/interface/EDMException.h"
#include "DataFormats/Provenance/interface/ProductID.h"
namespace edm {
namespace reftobase {
class RefHolderBase;
template <typename REF>
class RefHolder;
template <typename REFV>
class RefVectorHolder : public RefVectorHolderBase {
public:
RefVectorHolder() : RefVectorHolderBase() {}
RefVectorHolder(REFV const& refs) : RefVectorHolderBase(), refs_(refs) {}
explicit RefVectorHolder(ProductID const& iId) : RefVectorHolderBase(), refs_(iId) {}
void swap(RefVectorHolder& other);
bool empty() const override;
size_type size() const override;
void clear() override;
void push_back(RefHolderBase const* r) override;
void reserve(size_type n) override;
ProductID id() const override;
EDProductGetter const* productGetter() const override;
RefVectorHolder<REFV>* clone() const override;
RefVectorHolder<REFV>* cloneEmpty() const override;
void setRefs(REFV const& refs);
size_t keyForIndex(size_t idx) const override;
//Needed for ROOT storage
CMS_CLASS_VERSION(10)
private:
typedef typename RefVectorHolderBase::const_iterator_imp const_iterator_imp;
public:
struct const_iterator_imp_specific : public const_iterator_imp {
typedef ptrdiff_t difference_type;
const_iterator_imp_specific() {}
explicit const_iterator_imp_specific(typename REFV::const_iterator const& it) : i(it) {}
~const_iterator_imp_specific() override {}
const_iterator_imp_specific* clone() const override { return new const_iterator_imp_specific(i); }
void increase() override { ++i; }
void decrease() override { --i; }
void increase(difference_type d) override { i += d; }
void decrease(difference_type d) override { i -= d; }
bool equal_to(const_iterator_imp const* o) const override { return i == dc(o); }
bool less_than(const_iterator_imp const* o) const override { return i < dc(o); }
void assign(const_iterator_imp const* o) override { i = dc(o); }
std::shared_ptr<RefHolderBase> deref() const override;
difference_type difference(const_iterator_imp const* o) const override { return i - dc(o); }
private:
typename REFV::const_iterator const& dc(const_iterator_imp const* o) const {
if (o == nullptr) {
Exception::throwThis(errors::InvalidReference, "In RefVectorHolder trying to dereference a null pointer\n");
}
const_iterator_imp_specific const* oo = dynamic_cast<const_iterator_imp_specific const*>(o);
if (oo == nullptr) {
Exception::throwThis(errors::InvalidReference,
"In RefVectorHolder trying to cast iterator to wrong type\n");
}
return oo->i;
}
typename REFV::const_iterator i;
};
typedef typename RefVectorHolderBase::const_iterator const_iterator;
const_iterator begin() const override { return const_iterator(new const_iterator_imp_specific(refs_.begin())); }
const_iterator end() const override { return const_iterator(new const_iterator_imp_specific(refs_.end())); }
/// Checks if product collection is in memory or available
/// in the Event. No type checking is done.
bool isAvailable() const override { return refs_.isAvailable(); }
private:
std::shared_ptr<reftobase::RefHolderBase> refBase(size_t idx) const override;
REFV refs_;
};
//
// implementations for RefVectorHolder<REFV>
//
template <typename REFV>
inline void RefVectorHolder<REFV>::swap(RefVectorHolder<REFV>& other) {
this->RefVectorHolderBase::swap(other);
refs_.swap(other.refs_);
}
template <typename REFV>
inline bool RefVectorHolder<REFV>::empty() const {
return refs_.empty();
}
template <typename REFV>
inline typename RefVectorHolder<REFV>::size_type RefVectorHolder<REFV>::size() const {
return refs_.size();
}
template <typename REFV>
inline void RefVectorHolder<REFV>::clear() {
return refs_.clear();
}
template <typename REFV>
inline void RefVectorHolder<REFV>::reserve(size_type n) {
typename REFV::size_type s = n;
refs_.reserve(s);
}
template <typename REFV>
inline ProductID RefVectorHolder<REFV>::id() const {
return refs_.id();
}
template <typename REFV>
inline EDProductGetter const* RefVectorHolder<REFV>::productGetter() const {
return refs_.productGetter();
}
template <typename REFV>
inline RefVectorHolder<REFV>* RefVectorHolder<REFV>::clone() const {
return new RefVectorHolder<REFV>(*this);
}
template <typename REFV>
inline RefVectorHolder<REFV>* RefVectorHolder<REFV>::cloneEmpty() const {
return new RefVectorHolder<REFV>(id());
}
template <typename REFV>
inline void RefVectorHolder<REFV>::setRefs(REFV const& refs) {
refs_ = refs;
}
template <typename REFV>
inline size_t RefVectorHolder<REFV>::keyForIndex(size_t idx) const {
return refs_[idx].key();
}
// Free swap function
template <typename REFV>
inline void swap(RefVectorHolder<REFV>& lhs, RefVectorHolder<REFV>& rhs) {
lhs.swap(rhs);
}
} // namespace reftobase
} // namespace edm
#include "DataFormats/Common/interface/RefHolder.h"
namespace edm {
namespace reftobase {
template <typename REFV>
void RefVectorHolder<REFV>::push_back(RefHolderBase const* h) {
typedef typename REFV::value_type REF;
RefHolder<REF> const* rh = dynamic_cast<RefHolder<REF> const*>(h);
if (rh == nullptr) {
Exception::throwThis(errors::InvalidReference,
"RefVectorHolder: attempting to cast a RefHolderBase "
"to an invalid type.\nExpected: ",
typeid(REF).name(),
"\n");
}
refs_.push_back(rh->getRef());
}
template <typename REFV>
std::shared_ptr<RefHolderBase> RefVectorHolder<REFV>::refBase(size_t idx) const {
return std::shared_ptr<RefHolderBase>(std::make_shared<RefHolder<typename REFV::value_type> >(refs_[idx]));
}
template <typename REFV>
std::shared_ptr<RefHolderBase> RefVectorHolder<REFV>::const_iterator_imp_specific::deref() const {
return std::shared_ptr<RefHolderBase>(std::make_shared<RefHolder<typename REFV::value_type> >(*i));
}
} // namespace reftobase
} // namespace edm
#endif
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