_VDBL_mthdcol< _TC, _TM, _TR > Class Template Reference
[Classes and types for internal use]
generic column class for methods
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#include <vdbl_col.h>
Public Member Functions | |
| _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 | |
| std::ostream & | print_contents (std::ostream &o) const |
| virtual void | def_copy (return_type *&d) 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 () | |
> _C_m holds the function object used | |
| _VDBL_mthdcol (const _Self &__c) | |
> _C_m holds the function object used | |
| virtual | ~_VDBL_mthdcol () |
> _C_m holds the function object used | |
Detailed Description
template<class _TC, class _TM, class _TR>
class _VDBL_mthdcol< _TC, _TM, _TR >
_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 505 of file vdbl_col.h.
Constructor & Destructor Documentation
| _VDBL_mthdcol< _TC, _TM, _TR >::_VDBL_mthdcol | ( | ) | [inline] |
standard constructor, copy constructor, and destructor
Definition at line 524 of file vdbl_col.h.
| _VDBL_mthdcol< _TC, _TM, _TR >::_VDBL_mthdcol | ( | const _Self & | __c | ) | [inline] |
standard constructor, copy constructor, and destructor
Definition at line 525 of file vdbl_col.h.
| virtual _VDBL_mthdcol< _TC, _TM, _TR >::~_VDBL_mthdcol | ( | ) | [inline, virtual] |
standard constructor, copy constructor, and destructor
Definition at line 526 of file vdbl_col.h.
| _VDBL_mthdcol< _TC, _TM, _TR >::_VDBL_mthdcol | ( | const method & | __m | ) | [inline] |
constructor for explicitely setting the method
Definition at line 532 of file vdbl_col.h.
Member Function Documentation
| virtual void _VDBL_colbase< _TR >::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.
Definition at line 210 of file vdbl_col.h.
| virtual void _VDBL_colbase< _TR >::def_copy | ( | return_type *& | d | ) | const [inline, virtual, inherited] |
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.
Definition at line 188 of file vdbl_col.h.
| virtual void _VDBL_colbase< _TR >::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.
Definition at line 197 of file vdbl_col.h.
| _Self* _VDBL_mthdcol< _TC, _TM, _TR >::new_copy | ( | ) | const [inline, virtual] |
new_copy is the clone operation for copy-constructor overloading. setcontext sets the context for value retrieval.
Reimplemented from _VDBL_colbase< _TR >.
Definition at line 534 of file vdbl_col.h.
| std::ostream& _VDBL_mthdcol< _TC, _TM, _TR >::print_contents | ( | std::ostream & | o | ) | const [inline, virtual] |
This function is needed for the operator<< for columns of type return_type.
Reimplemented from _VDBL_colbase< _TR >.
Definition at line 561 of file vdbl_col.h.
| virtual const std::type_info& _VDBL_colbase< _TR >::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 221 of file vdbl_col.h.
| virtual void _VDBL_mthdcol< _TC, _TM, _TR >::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 540 of file vdbl_col.h.
The documentation for this class was generated from the following file:
