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_VDBL_mthdcol< _C, _M, _R > Class Template Reference
[Classes and types for internal use]

generic column class for methods More...

#include <vdbl_col.h>

Inheritance diagram for _VDBL_mthdcol< _C, _M, _R >:

[legend]Collaboration diagram for _VDBL_mthdcol< _C, _M, _R >:

[legend]List of all members.

Public Methods
	_VDBL_mthdcol (const method &__m)
_Self *	new_copy () const
virtual void	setcontext (const context *_c, const _VDBL_row *_r)
void	get (type &c) const
	the function object provides us with the retrieval method
void	get_ptr (type const *&c) const
	there is no way to get a pointer to the method's result properly
void	def (type &d) const
	the default value might be different, and might be computed differently
void	def_copy (return_type *&d) const
virtual void	setcontext (const context *_c, const _VDBL_row *_r) VDBL_PURE_VIRTUAL virtual void get(return_type &c) const VDBL_PURE_VIRTUAL virtual void def(return_type &d) const VDBL_PURE_VIRTUAL virtual void get_ptr(return_type const *&c) const VDBL_PURE_VIRTUAL virtual void get_copy(return_type *&c) const
virtual void	def_copy (_VDBL_alltype_base *&v) const
virtual void	get_copy (_VDBL_alltype_base *&v) const
virtual const std::type_info &	return_type_id () const
	_VDBL_mthdcol ()
	_VDBL_mthdcol (const _Self &__c)
virtual	~_VDBL_mthdcol ()

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Detailed Description

template<class _C, class _M, class _R>
class _VDBL_mthdcol< _C, _M, _R >

_VDBL_mthdcol is the generic column class for computed values. It allows to define a method, which is called within the given context together with a reference to the row, whenever a column is accessed.

Definition at line 506 of file vdbl_col.h.

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Constructor & Destructor Documentation

template<class _C, class _M, class _R> _VDBL_mthdcol< _C, _M, _R >::_VDBL_mthdcol (    )  [inline]

standard constructor, copy constructor, and destructor Definition at line 525 of file vdbl_col.h.

template<class _C, class _M, class _R> _VDBL_mthdcol< _C, _M, _R >::_VDBL_mthdcol (  const _Self &    __c )  [inline]

standard constructor, copy constructor, and destructor Definition at line 526 of file vdbl_col.h.

template<class _C, class _M, class _R> virtual _VDBL_mthdcol< _C, _M, _R >::~_VDBL_mthdcol (    )  [inline, virtual]

standard constructor, copy constructor, and destructor Definition at line 527 of file vdbl_col.h.

template<class _C, class _M, class _R> _VDBL_mthdcol< _C, _M, _R >::_VDBL_mthdcol (  const method &    __m )  [inline]

constructor for explicitely setting the method Definition at line 533 of file vdbl_col.h.

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Member Function Documentation

template<class _R> virtual void _VDBL_colbase< _R >::def_copy (  _VDBL_alltype_base *&    v )  const [inline, virtual, inherited]

This version of get_copy returns a copy of the columns default value within an alltype. This is useful for passing on column values. It can also be used to circumvent the strict run-time type checking. The user is, however, DISCOURAGED to do so. Reimplemented in _VDBL_stdcol< _T >. Definition at line 209 of file vdbl_col.h.

template<class _C, class _M, class _R> void _VDBL_mthdcol< _C, _M, _R >::def_copy (  return_type *&    d )  const [inline, virtual]

This function returns a pointer to a copy of the column's default value. The copy of the value is allocated by new. It has to be deleted by the user to avoid memory leaks. Reimplemented from _VDBL_colbase< _R >. Definition at line 559 of file vdbl_col.h.

template<class _R> virtual void _VDBL_colbase< _R >::get_copy (  _VDBL_alltype_base *&    v )  const [inline, virtual, inherited]

This version of get_copy returns a copy of the columns value within an alltype. This is useful for passing on column values. It can also be used to circumvent the strict run-time type checking. The user is, however, DISCOURAGED to do so. Reimplemented in _VDBL_stdcol< _T >. Definition at line 196 of file vdbl_col.h.

template<class _C, class _M, class _R> _Self* _VDBL_mthdcol< _C, _M, _R >::new_copy (    )  const [inline, virtual]

new_copy is the clone operation for copy-constructor overloading. Reimplemented from _VDBL_colbase< _R >. Definition at line 535 of file vdbl_col.h.

template<class _R> virtual const std::type_info& _VDBL_colbase< _R >::return_type_id (    )  const [inline, virtual, inherited]

This function returns the type_info of the column type. This information is used during run-time type checking. Definition at line 220 of file vdbl_col.h.

template<class _R> virtual void _VDBL_colbase< _R >::setcontext (  const context *    _c, const _VDBL_row *    _r )  const [inline, virtual, inherited]

This function returns a pointer to a copy of the column's value. The copy of the value is allocated by new. It has to be deleted by the user to avoid memory leaks. Definition at line 156 of file vdbl_col.h.

template<class _C, class _M, class _R> virtual void _VDBL_mthdcol< _C, _M, _R >::setcontext (  const context *    _c, const _VDBL_row *    _r )  [inline, virtual]

for setting the context, the setcontext method of the function object is used. Definition at line 541 of file vdbl_col.h.

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

• vdbl_col.h

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