Lumiera  0.pre.03
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session-service-fetch.hpp
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1 /*
2  SESSION-SERVICE-FETCH.hpp - session implementation service API: fetch PlacementRef
3 
4  Copyright (C)
5  2008, Hermann Vosseler <Ichthyostega@web.de>
6 
7   **Lumiera** is free software; you can redistribute it and/or modify it
8   under the terms of the GNU General Public License as published by the
9   Free Software Foundation; either version 2 of the License, or (at your
10   option) any later version. See the file COPYING for further details.
11 
12 */
13 
14 
28 #ifndef MOBJECT_SESSION_SESSION_SERVICE_FETCH_H
29 #define MOBJECT_SESSION_SESSION_SERVICE_FETCH_H
30 
31 //#include "steam/mobject/session.hpp"
32 //#include "lib/meta/generator.hpp"
34 
35 
36 
37 
38 namespace steam {
39 namespace mobject {
40 namespace session {
41 
42 // using lib::meta::InstantiateChained;
43 // using lib::meta::InheritFrom;
44 // using lib::meta::NullType;
45 
54  {
55  public:
56  static PlacementMO& resolveID (PlacementMO::ID const&) ;
57  static bool isRegisteredID (PlacementMO::ID const&) ;
58 
59  static bool isAccessible() ;
60  };
61 
62 
63 
64 }}} // namespace steam::mobject::session
65 #endif
static bool isRegisteredID(PlacementMO::ID const &)
verify the given placement-ID (hash) is valid, by checking if it refers to a Placement instance curre...
Core abstraction: placement of a media object into session context.
static PlacementMO & resolveID(PlacementMO::ID const &)
actually retrieve a Placement tracked by the index.
Steam-Layer implementation namespace root.
Namespace of Session and user visible high-level objects.
Definition: sequence.hpp:65
static bool isAccessible()
is the element-fetch service usable? Effectively this means: is the session up?
Implementation-level service for resolving an Placement-ID.