Libzypp/Design/Resolvable/Interface

From openSUSE

Interface to Resolvable

base::ReferenceCounted
^
Resolvable    (identification and dependencies)
^
ResObject     (common data, mostly UI driven: summary descrition...)
^
Package, ....(object specific data)

Resolvables are reference counted objects. They are usually created and provided by some kind of [wiki:Design/Source]. They are accessed via Ptr classes, which handle the reference counting.

The Ptr types are declared inside the classes:

Resolvable::Ptr       (--> Resolvable*)
Resolvable::constPtr  (--> const Resolvable*)

ResObject::Ptr
ResObject::constPtr

...

Automatic conversion is the same as with ordinary pointer:

ResObject::Ptr can be used as
ResObject::constPtr
Resolvable::Ptr
Resolvable::constPtr

ResObject::constPtr can be used as
Resolvable::constPtr

Available casts are:

base::static_pointer_cast
base::const_pointer_cast
base::dynamic_pointer_cast

to be used the same was as you would do with ordinary pointers.

It is that simple to use.

back

Last edit in Trac '11/24/05 18:24:58' by 'kkaempf'

Last edit in Trac '11/24/05 18:24:58' by 'kkaempf'

Last edit in Trac '11/24/05 18:24:58' by 'kkaempf'

Last edit in Trac '11/24/05 18:24:58' by 'kkaempf'