pqxxobject::field_proxy< T > Class Template Reference

Database field template proxy class. More...

#include <field_proxy.h>

Inheritance diagram for pqxxobject::field_proxy< T >:

List of all members.

Public Types
typedef T::value_type	value_type
Public Member Functions
	field_proxy (T &value)
	The constructor.
	field_proxy (const field_proxy &rhs)
	The copy constructor.
	~field_proxy ()
	The destructor (non-virtual).
field_proxy< T > &	operator= (const value_type &rhs)
	Overloaded assignment operator.
	operator value_type () const
	Conversion operator.
bool	is_null () const
	Check if the contained value is NULL.
bool	is_not_null () const
	Check if the contained value is not NULL.
Private Attributes
T &	m_value
	The contained value.

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Detailed Description

template<typename T>
class pqxxobject::field_proxy< T >

Database field template proxy class.

This class is a proxy for a field class. That is, it represents a field class, and forwards a subset of the field operations to the referenced field. It is used to limit access to the field.

Definition at line 58 of file field_proxy.h.

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Member Typedef Documentation

template<typename T> typedef T::value_type pqxxobject::field_proxy< T >::value_type

Reimplemented in pqxxobject::field_proxy_readonly< T >, and pqxxobject::field_proxy_writeonly< T >. Definition at line 61 of file field_proxy.h.

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Constructor & Destructor Documentation

template<typename T> pqxxobject::field_proxy< T >::field_proxy (  T &  value  )  [inline, explicit]

The constructor. Definition at line 64 of file field_proxy.h.

template<typename T> pqxxobject::field_proxy< T >::field_proxy (  const field_proxy< T > &  rhs  )  [inline]

The copy constructor. Definition at line 70 of file field_proxy.h.

template<typename T> pqxxobject::field_proxy< T >::~field_proxy (   )  [inline]

The destructor (non-virtual). Definition at line 76 of file field_proxy.h.

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Member Function Documentation

template<typename T> bool pqxxobject::field_proxy< T >::is_not_null (   )  const [inline]

Check if the contained value is not NULL. Returns: true if not NULL, otherwise false. Definition at line 105 of file field_proxy.h.

template<typename T> bool pqxxobject::field_proxy< T >::is_null (   )  const [inline]

Check if the contained value is NULL. Returns: true if NULL, otherwise false. Definition at line 96 of file field_proxy.h.

template<typename T> pqxxobject::field_proxy< T >::operator value_type (   )  const [inline]

Conversion operator. Reimplemented in pqxxobject::field_proxy_writeonly< T >. Definition at line 87 of file field_proxy.h.

template<typename T> field_proxy<T>& pqxxobject::field_proxy< T >::operator= (  const value_type &  rhs  )  [inline]

Overloaded assignment operator. Reimplemented in pqxxobject::field_proxy_readonly< T >. Definition at line 80 of file field_proxy.h.

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Member Data Documentation

template<typename T> T& pqxxobject::field_proxy< T >::m_value [private]

The contained value. Definition at line 112 of file field_proxy.h.

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The documentation for this class was generated from the following file:

• pqxxobject/field_proxy.h

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