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// AbstractBinding.h
//
// $Id: //poco/1.3/Data/include/Poco/Data/AbstractBinding.h#1 $
//
// Library: Data
// Package: DataCore
// Module: AbstractBinding
//
// Definition of the AbstractBinding class.
//
// Copyright (c) 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 Data_AbstractBinding_INCLUDED
#define Data_AbstractBinding_INCLUDED
#include "Poco/Data/Data.h"
#include "Poco/Any.h"
#include "Poco/RefCountedObject.h"
#include "Poco/AutoPtr.h"
#include <vector>
#include <cstddef>
namespace Poco {
namespace Data {
class AbstractBinder;
class Data_API AbstractBinding: public Poco::RefCountedObject
/// AbstractBinding connects a value with a placeholder via an AbstractBinder interface.
{
public:
AbstractBinding();
/// Creates the AbstractBinding.
virtual ~AbstractBinding();
/// Destroys the AbstractBinding.
void setBinder(AbstractBinder* pBinder);
/// Sets the object used for binding; object does NOT take ownership of the pointer.
AbstractBinder* getBinder() const;
/// Returns the AbstractBinder used for binding data.
virtual std::size_t numOfColumnsHandled() const = 0;
/// Returns the number of columns that the binding handles.
///
/// The trivial case will be one single column but when
/// complex types are used this value can be larger than one.
virtual std::size_t numOfRowsHandled() const = 0;
/// Returns the number of rows that the binding handles.
///
/// The trivial case will be one single row but
/// for collection data types (ie vector) it can be larger.
virtual bool canBind() const = 0;
/// Returns true if we have enough data to bind
virtual void bind(std::size_t pos) = 0;
/// Binds a value to the given column position
virtual void reset() = 0;
/// Allows a binding to be reused.
private:
AbstractBinder* _pBinder;
};
typedef Poco::AutoPtr<AbstractBinding> AbstractBindingPtr;
typedef std::vector<AbstractBindingPtr> AbstractBindingVec;
//
// inlines
//
inline void AbstractBinding::setBinder(AbstractBinder* pBinder)
{
_pBinder = pBinder;
}
inline AbstractBinder* AbstractBinding::getBinder() const
{
return _pBinder;
}
} } // namespace Poco::Data
#endif // Data_AbstractBinding_INCLUDED
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