mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-13 10:32:57 +01:00
105 lines
2.8 KiB
C++
105 lines
2.8 KiB
C++
//
|
|
// Instantiator.h
|
|
//
|
|
// $Id: //poco/1.4/Foundation/include/Poco/Instantiator.h#1 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: Core
|
|
// Module: Instantiator
|
|
//
|
|
// Definition of the Instantiator class.
|
|
//
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person or organization
|
|
// obtaining a copy of the software and accompanying documentation covered by
|
|
// this license (the "Software") to use, reproduce, display, distribute,
|
|
// execute, and transmit the Software, and to prepare derivative works of the
|
|
// Software, and to permit third-parties to whom the Software is furnished to
|
|
// do so, all subject to the following:
|
|
//
|
|
// The copyright notices in the Software and this entire statement, including
|
|
// the above license grant, this restriction and the following disclaimer,
|
|
// must be included in all copies of the Software, in whole or in part, and
|
|
// all derivative works of the Software, unless such copies or derivative
|
|
// works are solely in the form of machine-executable object code generated by
|
|
// a source language processor.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
|
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
|
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
|
|
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
// DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
|
|
#ifndef Foundation_Instantiator_INCLUDED
|
|
#define Foundation_Instantiator_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
template <class Base>
|
|
class AbstractInstantiator
|
|
/// The common base class for all Instantiator instantiations.
|
|
/// Used by DynamicFactory.
|
|
{
|
|
public:
|
|
AbstractInstantiator()
|
|
/// Creates the AbstractInstantiator.
|
|
{
|
|
}
|
|
|
|
virtual ~AbstractInstantiator()
|
|
/// Destroys the AbstractInstantiator.
|
|
{
|
|
}
|
|
|
|
virtual Base* createInstance() const = 0;
|
|
/// Creates an instance of a concrete subclass of Base.
|
|
|
|
private:
|
|
AbstractInstantiator(const AbstractInstantiator&);
|
|
AbstractInstantiator& operator = (const AbstractInstantiator&);
|
|
};
|
|
|
|
|
|
template <class C, class Base>
|
|
class Instantiator: public AbstractInstantiator<Base>
|
|
/// A template class for the easy instantiation of
|
|
/// instantiators.
|
|
///
|
|
/// For the Instantiator to work, the class of which
|
|
/// instances are to be instantiated must have a no-argument
|
|
/// constructor.
|
|
{
|
|
public:
|
|
Instantiator()
|
|
/// Creates the Instantiator.
|
|
{
|
|
}
|
|
|
|
virtual ~Instantiator()
|
|
/// Destroys the Instantiator.
|
|
{
|
|
}
|
|
|
|
Base* createInstance() const
|
|
{
|
|
return new C;
|
|
}
|
|
};
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_Instantiator_INCLUDED
|