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removed redundant Poco::Data::Nullable

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This commit is contained in:
Aleksandar Fabijanic
2012-09-12 02:10:31 +00:00
parent b7957f8cd0
commit 9ad1effd8b
7 changed files with 125 additions and 262 deletions
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217
Data/include/Poco/Data/Nullable.h
View File

@@ -1,217 +0,0 @@
//
// Nullable.h
//
// $Id: //poco/Main/Data/include/Poco/Data/Nullable.h#1 $
//
// Library: Data
// Package: DataCore
// Module: Nullable
//
// Definition of the Nullable class.
//
// Copyright (c) 2008, 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_Nullable_INCLUDED
#define Data_Nullable_INCLUDED
#include "Poco/Data/AbstractBinder.h"
#include <iostream>
namespace Poco {
namespace Data {
template <typename T>
class Nullable {
/// Nullable class - template for field, that can be null
public:
Nullable()
: _value(), _isNull(true)
/// Creates the Nullable.
{
}
Nullable(const T& value)
: _value(value), _isNull(false)
/// Creates the Nullable from value
{
}
Nullable(const NullData&)
: _value(), _isNull(true)
/// Creates the Nullable from null
{
}
Nullable& operator=(const T& value)
/// Assigns new value to Nullable
{
_isNull = false;
_value = value;
return *this;
}
Nullable& operator=(const Nullable<T>& other)
/// Assigns other Nullable to Nullable
{
_isNull = other._isNull;
_value = other._value;
return *this;
}
Nullable& operator=(const NullData&)
/// Assigns null to Nullable
{
_isNull = true;
return *this;
}
bool operator==(const Nullable<T>& other) const
/// Compares two Nullable
{
return (_isNull && other._isNull) || (_isNull == other._isNull && _value == other._value);
}
bool operator==(const T& value) const
/// Compares Nullable with value
{
return (!_isNull && _value == value);
}
bool operator==(const NullData&) const
/// Compares Nullable with null
{
return _isNull;
}
bool operator!=(const NullData&) const
/// Compares Nullable for non null
{
return !_isNull;
}
bool operator!=(const T& value) const
/// Compares Nullable with value for non equal
{
return (_isNull || _value != value);
}
bool operator < (const Nullable<T>& other) const
/// Compares two Nullable objects
{
if (_isNull < other._isNull)
return true;
return (_value < other._value);
}
operator T& ()
/// Get reference to the value
{
return _value;
}
operator const T& () const
/// Get const reference to the value
{
return _value;
}
bool isNull() const
/// Test Nullable for null
{
return _isNull;
}
void setNull(bool isNull = true)
/// Change Nullable "isNull" sign
{
_isNull = isNull;
}
const T& getValue() const
/// Get value
{
return _value;
}
void setValue(const T& value)
/// Set value
{
_isNull = false; _value = value;
}
private:
T _value;
bool _isNull;
};
//
// operators
//
template <typename T>
bool operator == (const T& value, const Nullable<T>& nValue)
{
return (!nValue.isNull() && value == nValue.getValue());
}
template <typename T>
bool operator != (const T& value, const Nullable<T>& nValue)
{
return (nValue.isNull() || value != nValue.getValue());
}
template <typename T>
bool operator == (const NullData&, const Nullable<T>& nValue)
{
return nValue.isNull();
}
template <typename T>
bool operator != (const NullData&, const Nullable<T>& nValue)
{
return !nValue.isNull();
}
template <typename T>
std::ostream& operator<<(std::ostream& out, const Nullable<T>& obj)
{
if (obj.isNull())
{
out << "NULL";
}
else
{
out << obj.getValue();
}
return out;
}
} } // namespace Poco::Data
#endif // Data_Nullable_INCLUDED

14
Data/include/Poco/Data/TypeHandler.h
View File

@@ -44,7 +44,7 @@
#include "Poco/Data/AbstractBinder.h"
#include "Poco/Data/AbstractExtractor.h"
#include "Poco/Data/AbstractPreparator.h"
#include "Poco/Data/Nullable.h"
#include "Poco/Nullable.h"
#include "Poco/Tuple.h"
#include "Poco/AutoPtr.h"
#include "Poco/SharedPtr.h"
@@ -285,7 +285,7 @@ public:
}
else
{
pBinder->bind(pos++, obj.getValue(), dir);
pBinder->bind(pos++, obj.value(), dir);
}
}
@@ -298,7 +298,7 @@ public:
}
else
{
pPreparator->prepare(pos++, (T&)obj.getValue());
pPreparator->prepare(pos++, (T&)obj.value());
}
}
@@ -310,15 +310,15 @@ public:
static void extract(std::size_t pos, Nullable<T>& obj, const Nullable<T>& , AbstractExtractor* pExt)
{
poco_assert_dbg (pExt != 0);
T value;
T val;
if (pExt->extract(pos++, value))
if (pExt->extract(pos++, val))
{
obj.setValue(value);
obj.value(val);
}
else
{
obj.setNull(true);
obj.clear();
}
}