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AbstractBinding.h
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166 lines (127 loc) · 4.48 KB
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//
// AbstractBinding.h
//
// $Id: //poco/Main/Data/include/Poco/Data/AbstractBinding.h#6 $
//
// 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/Data/AbstractBinder.h"
#include "Poco/Any.h"
#include "Poco/RefCountedObject.h"
#include "Poco/AutoPtr.h"
#include <vector>
#include <list>
#include <deque>
#include <cstddef>
namespace Poco {
namespace Data {
class Data_API AbstractBinding
/// AbstractBinding connects a value with a placeholder via an AbstractBinder interface.
{
public:
typedef SharedPtr<AbstractBinding> Ptr;
typedef AbstractBinder::Ptr BinderPtr;
enum Direction
{
PD_IN = AbstractBinder::PD_IN,
PD_OUT = AbstractBinder::PD_OUT,
PD_IN_OUT = AbstractBinder::PD_IN_OUT
};
AbstractBinding(const std::string& name = "", Direction direction = PD_IN, Poco::UInt32 bulkSize = 0);
/// Creates the AbstractBinding.
virtual ~AbstractBinding();
/// Destroys the AbstractBinding.
void setBinder(BinderPtr pBinder);
/// Sets the object used for binding; object does NOT take ownership of the pointer.
BinderPtr 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 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.
AbstractBinder::Direction getDirection() const;
/// Returns the binding direction.
const std::string& name() const;
/// Returns the name for this binding.
bool isBulk() const;
/// Returns true if extraction is bulk.
Poco::UInt32 bulkSize() const;
/// Returns the size of the bulk binding.
private:
BinderPtr _pBinder;
std::string _name;
Direction _direction;
Poco::UInt32 _bulkSize;
};
typedef std::vector<AbstractBinding::Ptr> AbstractBindingVec;
typedef std::deque<AbstractBinding::Ptr> AbstractBindingDeq;
typedef std::list<AbstractBinding::Ptr> AbstractBindingLst;
//
// inlines
//
inline AbstractBinder::Ptr AbstractBinding::getBinder() const
{
return _pBinder;
}
inline const std::string& AbstractBinding::name() const
{
return _name;
}
inline AbstractBinder::Direction AbstractBinding::getDirection() const
{
return (AbstractBinder::Direction) _direction;
}
inline bool AbstractBinding::isBulk() const
{
return _bulkSize > 0;
}
inline Poco::UInt32 AbstractBinding::bulkSize() const
{
return _bulkSize;
}
} } // namespace Poco::Data
#endif // Data_AbstractBinding_INCLUDED