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#ifndef DataFormats_Provenance_BranchID_h
#define DataFormats_Provenance_BranchID_h
/*----------------------------------------------------------------------
BranchID: A unique identifier for each branch.
----------------------------------------------------------------------*/
#include <iosfwd>
#include <string>
namespace edm {
class BranchID {
public:
typedef unsigned int value_type;
BranchID() : id_(0) {}
explicit BranchID(std::string const& branchName) : id_(toID(branchName)) {}
explicit BranchID(value_type theID) : id_(theID) {}
void setID(std::string const& branchName) { id_ = toID(branchName); }
unsigned int id() const { return id_; }
bool isValid() const { return id_ != 0; }
bool operator<(BranchID const& rh) const { return id_ < rh.id_; }
bool operator>(BranchID const& rh) const { return id_ > rh.id_; }
bool operator==(BranchID const& rh) const { return id_ == rh.id_; }
bool operator!=(BranchID const& rh) const { return id_ != rh.id_; }
private:
static value_type toID(std::string const& branchName);
value_type id_;
};
std::ostream& operator<<(std::ostream& os, BranchID const& id);
} // namespace edm
#endif
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