A class that manages meta-data to be associated with an object. More...

#include <MetaObject.h>

Inheritance diagram for SH::MetaObject:

Collaboration diagram for SH::MetaObject:

Public Types
enum	CastMode { CAST_ERROR_THROW , CAST_ERROR_DEFAULT , CAST_NOCAST_THROW , CAST_NOCAST_DEFAULT }
	the different modes for casts More...

Public Member Functions
void	testInvariant () const
	test the invariant of this object
	MetaObject ()
	standard constructor
	MetaObject (const MetaObject &that)
	standard copy constructor
virtual	~MetaObject ()
	standard destructor
MetaObject &	operator= (const MetaObject &that)
	standard assignment operator
void	swap (MetaObject &that)
	standard swap
void	remove (const std::string &name)
	remove all meta-information with the given name
void	addReplace (TNamed *meta_swallow)
	add a meta-data object and remove any existing meta-data with the same name
TObject *	get (const std::string &name)
	the meta-data object with the given name
const TObject *	get (const std::string &name) const
double	getDouble (const std::string &name, double def_val=0) const
	the meta-data double with the given name
std::string	getString (const std::string &name, const std::string &def_val="") const
	the meta-data string with the given name
template<class T>
T	castT (const std::string &name, T def_val, CastMode mode) const
	the meta-data element with the given name
double	castDouble (const std::string &name, double def_val=0, CastMode mode=CAST_ERROR_THROW) const
	the meta-data double with the given name
std::string	castString (const std::string &name, const std::string &def_val="", CastMode mode=CAST_ERROR_THROW) const
	the meta-data string with the given name
int	castInteger (const std::string &name, int def_val=0, CastMode mode=CAST_ERROR_THROW) const
	the meta-data integer with the given name
bool	castBool (const std::string &name, bool def_val=false, CastMode mode=CAST_ERROR_THROW) const
	the meta-data boolean with the given name
void	setDouble (const std::string &name, double value)
	set the meta-data double with the given name
void	setString (const std::string &name, const std::string &value)
	set the meta-data string with the given name
void	setInteger (const std::string &name, int value)
	set the meta-data integer with the given name
void	setBool (const std::string &name, bool value)
	set the meta-data boolean with the given name
template<class T>
void	setT (const std::string &name, T value)
	set the meta-data element with the given name
void	fetch (const MetaObject &source)
	fetch the meta-data from the given sample.
void	fetchDefaults (const MetaObject &source)
	fetch the meta-data from the given sample not present in this sample.
void	fetchFromString (const std::string &source)
	fetch the meta-data from a given string
std::string	dumpToString ()
	dump the meta-data to a string
virtual void	Add (TObject *meta_swallow)
	add another object to the collection
virtual void	Clear (Option_t *option="")
	clear out the content of the collection
virtual void	Delete (Option_t *option="")
	clear out the content of the collection
virtual Int_t	GetEntries () const
	return the number of entries of this collection
virtual TObject **	GetObjectRef (const TObject *meta) const
	return pointer to pointer of object meta
virtual TIterator *	MakeIterator (Bool_t dir=kIterForward) const
	make a new iterator for this collection
virtual TObject *	Remove (TObject *meta)
	remove the given object from the list

Private Member Functions
	ClassDef (MetaObject, 1)

Private Attributes
TList *	m_dataList
	the actual meta-data list

Related Symbols
(Note that these are not member symbols.)
std::string	dbg (const MetaObject &obj, unsigned verbosity=0)
	the debugging info of this object
void	swap (MetaObject &a, MetaObject &b)
	standard swap

Detailed Description

A class that manages meta-data to be associated with an object.

Originally this was just to be used for meta-data of a sample, but it is now also used for specifying the options for an EventLoop job.

Definition at line 55 of file MetaObject.h.

Member Enumeration Documentation

◆ CastMode

enum SH::MetaObject::CastMode

the different modes for casts

Enumerator
CAST_ERROR_THROW	cast and throw if the cast fails (not if the input is not found)
CAST_ERROR_DEFAULT	cast and return the default value if the cast fails
CAST_NOCAST_THROW	do not cast and throw if the input has the wrong type (not if the input is not found)
CAST_NOCAST_DEFAULT	cast and return the default value if the input has the wrong type

Definition at line 63 of file MetaObject.h.

    {
      CAST_ERROR_THROW,
      CAST_ERROR_DEFAULT,
      CAST_NOCAST_THROW,
      CAST_NOCAST_DEFAULT
    };

Constructor & Destructor Documentation

◆ MetaObject() [1/2]

SH::MetaObject::MetaObject ( )

standard constructor

Guarantee: strong

Failures: out of memory I

◆ MetaObject() [2/2]

SH::MetaObject::MetaObject ( const MetaObject & that )

standard copy constructor

Guarantee: strong

Failures: out of memory II

◆ ~MetaObject()

virtual SH::MetaObject::~MetaObject ( )

virtual

standard destructor

Guarantee: no-fail

Member Function Documentation

◆ Add()

virtual void SH::MetaObject::Add ( TObject * meta_swallow )

virtual

add another object to the collection

Precondition: meta_swallow != 0

Guarantee: basic, argument is always swallowed

Failures: out of memory II

◆ addReplace()

void SH::MetaObject::addReplace ( TNamed * meta_swallow )

add a meta-data object and remove any existing meta-data with the same name

Parameters

meta_swallow the meta-object to add

Precondition: meta_swallow != 0

Guarantee: basic, may delete some entries without adding the new one

Failures: out of memory II

◆ castBool()

bool SH::MetaObject::castBool	(	const std::string &	name,
		bool	def_val = false,
		CastMode	mode = CAST_ERROR_THROW ) const

the meta-data boolean with the given name

Returns: the meta-data with the given name, or def_value if that meta-data is not available or does not have the right type

Parameters

name	the name of the meta-data object
dev_val	the value to return if no meta-data object of the given name exists, or if it does not have the right type

Guarantee: no-fail

◆ castDouble()

double SH::MetaObject::castDouble	(	const std::string &	name,
		double	def_val = 0,
		CastMode	mode = CAST_ERROR_THROW ) const

the meta-data double with the given name

Returns: the meta-data with the given name, or def_value if that meta-data is not available or does not have the right type

Parameters

name	the name of the meta-data object
dev_val	the value to return if no meta-data object of the given name exists, or if it does not have the right type

Guarantee: no-fail

◆ castInteger()

int SH::MetaObject::castInteger	(	const std::string &	name,
		int	def_val = 0,
		CastMode	mode = CAST_ERROR_THROW ) const

the meta-data integer with the given name

Returns: the meta-data with the given name, or def_value if that meta-data is not available or does not have the right type

Parameters

name	the name of the meta-data object
dev_val	the value to return if no meta-data object of the given name exists, or if it does not have the right type

Guarantee: no-fail

◆ castString()

std::string SH::MetaObject::castString	(	const std::string &	name,
		const std::string &	def_val = "",
		CastMode	mode = CAST_ERROR_THROW ) const

the meta-data string with the given name

Returns: the meta-data with the given name, or def_value if that meta-data is not available or does not have the right type

Parameters

name	the name of the meta-data object
dev_val	the value to return if no meta-data object of the given name exists, or if it does not have the right type

Guarantee: no-fail

Rationale: I return the string by value, because returning by reference seems to break the python binding.

◆ castT()

template<class T>

T SH::MetaObject::castT	(	const std::string &	name,
		T	def_val,
		CastMode	mode ) const

the meta-data element with the given name

Returns: the meta-data with the given name, or def_value if that meta-data is not available or does not have the right type

Parameters

name	the name of the meta-data object
dev_val	the value to return if no meta-data object of the given name exists, or if it does not have the right type

Guarantee: no-fail

◆ ClassDef()

SH::MetaObject::ClassDef	(	MetaObject	,
		1	)

private

◆ Clear()

virtual void SH::MetaObject::Clear ( Option_t * option = "" )

virtual

clear out the content of the collection

Guarantee: no-fail

◆ Delete()

virtual void SH::MetaObject::Delete ( Option_t * option = "" )

virtual

clear out the content of the collection

Guarantee: no-fail

◆ dumpToString()

std::string SH::MetaObject::dumpToString ( )

dump the meta-data to a string

string will be suitable for fetchFromString

Guarantee: strong

Failues: no-fail

◆ fetch()

void SH::MetaObject::fetch ( const MetaObject & source )

fetch the meta-data from the given sample.

fields that have a name that starts with "nc_" are not copied.

Guarantee: basic, may only fetch some meta-data

Failures: out of memory II

Rationale this is used by EventLoop, to copy the: meta-data from the input samples to the output samples. the prefix "nc_" is used to indicate meta-data entries that only apply to the current sample, or are options to the specific EventLoop job.

◆ fetchDefaults()

void SH::MetaObject::fetchDefaults ( const MetaObject & source )

fetch the meta-data from the given sample not present in this sample.

ignores any meta-data without name.

Guarantee: basic, may only fetch some meta-data

Failures: out of memory II

◆ fetchFromString()

void SH::MetaObject::fetchFromString ( const std::string & source )

fetch the meta-data from a given string

individual pieces of data may be given as key=value, key='value', key="value" spurious spaces will be ignored, commas inside values are not allowed

Guarantee: weak, may throw runtime exceptions if string cannot be parsed

Failures: malformed input

◆ get() [1/2]

TObject * SH::MetaObject::get ( const std::string & name )

the meta-data object with the given name

Returns: the meta-data object with the given name, or NULL if there is no such entry

Parameters

name	the name of the meta-data object

Guarantee: no-fail

◆ get() [2/2]

const TObject * SH::MetaObject::get ( const std::string & name ) const

◆ getDouble()

double SH::MetaObject::getDouble	(	const std::string &	name,
		double	def_val = 0 ) const

the meta-data double with the given name

Returns: the meta-data with the given name, or def_value if that meta-data is not available or does not have the right type

Parameters

name	the name of the meta-data object
dev_val	the value to return if no meta-data object of the given name exists, or if it does not have the right type

Guarantee: no-fail

◆ GetEntries()

virtual Int_t SH::MetaObject::GetEntries ( ) const

virtual

return the number of entries of this collection

Guarantee: no-fail

◆ GetObjectRef()

virtual TObject ** SH::MetaObject::GetObjectRef ( const TObject * meta ) const

virtual

return pointer to pointer of object meta

Precondition: meta != 0

Postcondition: result != 0; *result == meta

Guarantee: strong

Failures: meta not in collection

◆ getString()

std::string SH::MetaObject::getString	(	const std::string &	name,
		const std::string &	def_val = "" ) const

the meta-data string with the given name

Returns: the meta-data with the given name, or def_value if that meta-data is not available or does not have the right type

Parameters

name	the name of the meta-data object
dev_val	the value to return if no meta-data object of the given name exists, or if it does not have the right type

Guarantee: no-fail

Rationale: I return the string by value, because returning by reference seems to break the python binding.

◆ MakeIterator()

virtual TIterator * SH::MetaObject::MakeIterator ( Bool_t dir = kIterForward ) const

virtual

make a new iterator for this collection

Postcondition: result != 0

Guarantee: strong

Failures: out of memory I

◆ operator=()

MetaObject & SH::MetaObject::operator= ( const MetaObject & that )

standard assignment operator

Returns: *this

Guarantee: strong

Failures: out of memory II

◆ Remove()

virtual TObject * SH::MetaObject::Remove ( TObject * meta )

virtual

remove the given object from the list

Precondition: meta != 0

Guarantee: strong

Failures: meta not in list

◆ remove()

void SH::MetaObject::remove ( const std::string & name )

remove all meta-information with the given name

Parameters

name	the meta-data name to remove

Guarantee: basic, may only delete some entries

Failures: out of memory II

◆ setBool()

void SH::MetaObject::setBool	(	const std::string &	name,
		bool	value )

set the meta-data boolean with the given name

Parameters

name	the name of the meta-data
value	the value to which it is set

Guarantee: basic, may clear old entry without adding new one

Failures: out of memory II

◆ setDouble()

void SH::MetaObject::setDouble	(	const std::string &	name,
		double	value )

set the meta-data double with the given name

Parameters

name	the name of the meta-data
value	the value to which it is set

Guarantee: basic, may clear old entry without adding new one

Failures: out of memory II

◆ setInteger()

void SH::MetaObject::setInteger	(	const std::string &	name,
		int	value )

set the meta-data integer with the given name

Parameters

name	the name of the meta-data
value	the value to which it is set

Guarantee: basic, may clear old entry without adding new one

Failures: out of memory II

◆ setString()

void SH::MetaObject::setString	(	const std::string &	name,
		const std::string &	value )

set the meta-data string with the given name

Parameters

name	the name of the meta-data
value	the value to which it is set

Guarantee: basic, may clear old entry without adding new one

Failures: out of memory II

◆ setT()

template<class T>

void SH::MetaObject::setT	(	const std::string &	name,
		T	value )

inline

set the meta-data element with the given name

Parameters

name	the name of the meta-data
value	the value to which it is set

Guarantee: basic, may clear old entry without adding new one

Failures: out of memory II

Definition at line 339 of file MetaObject.h.

                                                               {
      RCU_CHANGE_INVARIANT (this);
      addReplace (new MetaData<T> (name, value));
    }

◆ swap()

void SH::MetaObject::swap ( MetaObject & that )

standard swap

Guarantee: no-fail

◆ testInvariant()

void SH::MetaObject::testInvariant ( ) const

test the invariant of this object

Guarantee: no-fail

◆ dbg()

std::string dbg	(	const MetaObject &	obj,
		unsigned	verbosity = 0 )

the debugging info of this object

Returns: a string representation of the object content

Parameters

obj	the object to be presented
verbosity	the level of verbosity (higher number -> more information)

Guarantee: strong

Failures: out of memory II

◆ swap()

void swap	(	MetaObject &	a,
		MetaObject &	b )

standard swap

Guarantee: no-fail

Member Data Documentation

◆ m_dataList

TList* SH::MetaObject::m_dataList

private

the actual meta-data list

Definition at line 477 of file MetaObject.h.

The documentation for this class was generated from the following file:

MetaObject.h

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Related Symbols

Detailed Description

Member Enumeration Documentation

◆ CastMode

Constructor & Destructor Documentation

◆ MetaObject() [1/2]

◆ MetaObject() [2/2]

◆ ~MetaObject()

Member Function Documentation

◆ Add()

◆ addReplace()

◆ castBool()

◆ castDouble()

◆ castInteger()

◆ castString()

◆ castT()

◆ ClassDef()

◆ Clear()

◆ Delete()

◆ dumpToString()

◆ fetch()

◆ fetchDefaults()

◆ fetchFromString()

◆ get() [1/2]

◆ get() [2/2]

◆ getDouble()

◆ GetEntries()

◆ GetObjectRef()

◆ getString()

◆ MakeIterator()

◆ operator=()

◆ Remove()

◆ remove()

◆ setBool()

◆ setDouble()

◆ setInteger()

◆ setString()

◆ setT()

◆ swap()

◆ testInvariant()

Friends And Related Symbol Documentation

◆ dbg()

◆ swap()

Member Data Documentation

◆ m_dataList