LUMIERA.clone/src/proc/asset/struct.cpp

155 lines
4.3 KiB
C++

/*
Struct(Asset) - key abstraction: structural asset
Copyright (C) Lumiera.org
2008, Hermann Vosseler <Ichthyostega@web.de>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* *****************************************************/
#include "proc/assetmanager.hpp"
#include "proc/asset/struct.hpp"
#include "proc/asset/procpatt.hpp"
#include "proc/asset/track.hpp"
#include "proc/asset/pipe.hpp"
#include "common/configrules.hpp"
#include "proc/asset/structfactoryimpl.hpp"
#include "lib/util.hpp"
#include "include/nobugcfg.h"
#include <boost/format.hpp>
using boost::format;
using lumiera::Symbol;
using lumiera::query::normalizeID;
using lumiera::query::QueryHandler;
using lumiera::ConfigRules;
using util::contains;
namespace asset
{
/****** NOTE: not really implemented yet. What follows is partially a hack to build simple tests *******/
/** query the currently defined properties of this
structural asset for a stream-ID predicate */
const string
Struct::queryStreamID() const
{
return lumiera::query::extractID ("stream", this->ident.name);
}
/** query the currently defined properties of this
structural asset for a stream-ID predicate */
const string
Struct::queryPipeID() const
{
return lumiera::query::extractID ("pipe", this->ident.name);
}
/** storage for the static StructFactory instance */
StructFactory Struct::create;
/** using private implementation detail class */
StructFactory::StructFactory ()
: impl_(new StructFactoryImpl(*this))
{ }
/** Factory method for Structural Asset instances.
* First tries to relove the asset by issuing an capability query.
* If unsuccessfull, use some internally specialized ctor call.
* @todo work out the struct asset naming scheme!
* @return an Struct smart ptr linked to the internally registered smart ptr
* created as a side effect of calling the concrete Struct subclass ctor.
*/
template<class STRU>
P<STRU>
StructFactory::operator() (const Query<STRU>& capabilities)
{
P<STRU> res;
QueryHandler<STRU>& typeHandler = ConfigRules::instance();
typeHandler.resolve (res, capabilities);
if (res)
return res;
// create new one, since the
// ConfigQuery didn't yield any result
STRU* pS = impl_->fabricate(capabilities);
return AssetManager::instance().wrap (*pS);
}
/** Factory method for creating Pipes explicitly.
* Normalizes pipe- and streamID, then retrieves the
* default processing pattern (ProcPatt) for this streamID.
* The Pipe ctor will fill out the shortDesc and longDesc
* automatically, based on pipeID and streamID (and they
* are editable anyways)
* @see ProcPatt
* @see DefaultsManager
*/
P<Pipe>
StructFactory::operator() (string pipeID, string streamID)
{
normalizeID (pipeID);
normalizeID (streamID);
static format descriptor("pipe(%s), stream(%s).");
Pipe* pP = impl_->fabricate (Query<Pipe> (descriptor % pipeID % streamID));
return AssetManager::instance().wrap (*pP);
}
} // namespace asset
/**************************************************/
/* explicit instantiations of the factory methods */
/**************************************************/
#include "proc/asset/struct.hpp"
#include "proc/asset/procpatt.hpp"
#include "proc/asset/track.hpp"
#include "proc/asset/pipe.hpp"
namespace asset
{
template P<Pipe> StructFactory::operator() (const Query<Pipe>& query);
template P<Track> StructFactory::operator() (const Query<Track>& query);
template PProcPatt StructFactory::operator() (const Query<const ProcPatt>& query);
} // namespace asset