PhysicsTools::AtomicId Class Reference

Cheap generic unique keyword identifier class. More...

#include <AtomicId.h>

Public Member Functions
	AtomicId () throw ()
	AtomicId (const AtomicId &orig) throw ()
	AtomicId (const char *arg) throw ()
	constructs an AtomicId from a C string More...
	AtomicId (const std::string &arg) throw ()
	constructs an AtomicId from a STL string More...
	operator bool () const throw ()
	null value check operator More...
	operator const char * () const throw ()
	implicit cast to a C string More...
	operator std::string () const throw ()
	implicit cast to a STL string More...
bool	operator!= (const AtomicId &second) const throw ()
bool	operator< (const AtomicId &second) const throw ()
bool	operator<= (const AtomicId &second) const throw ()
AtomicId &	operator= (const AtomicId &orig) throw ()
bool	operator== (const AtomicId &second) const throw ()
bool	operator> (const AtomicId &second) const throw ()
bool	operator>= (const AtomicId &second) const throw ()
	~AtomicId () throw ()

Static Private Member Functions
static AtomicId	build (const char *arg) throw ()
static const char *	lookup (const char *arg) throw ()

Private Attributes
const char *	string

Detailed Description

Cheap generic unique keyword identifier class.

AtomicId is a lightweight class intended to be used for key values e.g. in STL maps. An atomic identifier can be transparently constructed from and converted back to a string, but an instance of AtomicId does not occupy and additional memory and the comparator operators are very cheap. An AtomicId instance requires the size of a pointer and is therefore suited for direct inlining.

Definition at line 32 of file AtomicId.h.

Constructor & Destructor Documentation

PhysicsTools::AtomicId::AtomicId ( ) throw ( )

inline

Definition at line 34 of file AtomicId.h.

: string(0) {}

PhysicsTools::AtomicId::AtomicId ( const AtomicId &  orig ) throw ( )

inline

Definition at line 35 of file AtomicId.h.

: string(orig.string) {}

PhysicsTools::AtomicId::AtomicId ( const char *  arg ) throw ( )

inline

constructs an AtomicId from a C string

Definition at line 37 of file AtomicId.h.

: string(lookup(arg)) {}

PhysicsTools::AtomicId::AtomicId ( const std::string &  arg ) throw ( )

inline

constructs an AtomicId from a STL string

Definition at line 39 of file AtomicId.h.

                                                  :
        string(lookup(arg.c_str())) {}

PhysicsTools::AtomicId::~AtomicId ( ) throw ( )

inline

Definition at line 41 of file AtomicId.h.

{}

Member Function Documentation

static AtomicId PhysicsTools::AtomicId::build ( const char *  arg ) throw ( )

inlinestaticprivate

Definition at line 66 of file AtomicId.h.

References lumiQueryAPI::q, and string.

{ AtomicId q; q.string = arg; return q; }

const char * PhysicsTools::AtomicId::lookup ( const char *  arg ) throw ( )

staticprivate

Definition at line 67 of file AtomicId.cc.

References PhysicsTools::getAtomicIdCache().

{
    if (string)
        return getAtomicIdCache().findOrInsert(string);

    return 0;
}

PhysicsTools::AtomicId::operator bool ( ) const throw ( )

inline

null value check operator

Definition at line 51 of file AtomicId.h.

    { return string != 0; }

PhysicsTools::AtomicId::operator const char * ( ) const throw ( )

inline

implicit cast to a C string

Definition at line 47 of file AtomicId.h.

References string.

    { return string; }

PhysicsTools::AtomicId::operator std::string ( ) const throw ( )

inline

implicit cast to a STL string

Definition at line 55 of file AtomicId.h.

    { return std::string(string); }

bool PhysicsTools::AtomicId::operator!= ( const AtomicId &  second ) const throw ( )

inline

Definition at line 59 of file AtomicId.h.

References edm::second().

{ return string != second.string; }

bool PhysicsTools::AtomicId::operator< ( const AtomicId &  second ) const throw ( )

inline

Definition at line 60 of file AtomicId.h.

References edm::second().

{ return string <  second.string; }

bool PhysicsTools::AtomicId::operator<= ( const AtomicId &  second ) const throw ( )

inline

Definition at line 61 of file AtomicId.h.

References edm::second().

{ return string <= second.string; }

AtomicId& PhysicsTools::AtomicId::operator= ( const AtomicId &  orig ) throw ( )

inline

Definition at line 43 of file AtomicId.h.

References string.

    { string = orig.string; return *this; }

bool PhysicsTools::AtomicId::operator== ( const AtomicId &  second ) const throw ( )

inline

Definition at line 58 of file AtomicId.h.

References edm::second().

{ return string == second.string; }

bool PhysicsTools::AtomicId::operator> ( const AtomicId &  second ) const throw ( )

inline

Definition at line 62 of file AtomicId.h.

References edm::second().

{ return string >  second.string; }

bool PhysicsTools::AtomicId::operator>= ( const AtomicId &  second ) const throw ( )

inline

Definition at line 63 of file AtomicId.h.

References edm::second().

{ return string >= second.string; }

Member Data Documentation

const char* PhysicsTools::AtomicId::string

private

Definition at line 69 of file AtomicId.h.

Referenced by build(), operator const char *(), and operator=().