oos::condition Class Reference

Represents a sql query condition. More...

#include <condition.hpp>

Public Member Functions
	condition ()
	condition (const std::string &c)
template<class T >
condition &	equal (const T &val)
template<class T >
condition &	not_equal (const T &val)
template<class T >
condition &	greater (const T &val)
template<class T >
condition &	greater_equal (const T &val)
template<class T >
condition &	less (const T &val)
template<class T >
condition &	less_equal (const T &val)
condition &	not_null ()
condition &	null ()
condition &	or_ (const condition &cond)
condition &	and_ (const condition &cond)
std::string	str (bool prepared) const
std::string	column () const
unsigned long	size () const
data_type_t	type () const
bool	valid () const

Detailed Description

Represents a sql query condition.

This class represents a condition part of a sql query or update statement. Each compare method returns a reference to the condition itself. That way one can concatenate conditions together.

Constructor & Destructor Documentation

oos::condition::condition ( )

inline

Creates an empty unknown condition.

oos::condition::condition ( const std::string &  c )

inline

Creates a new condition for the given column c

Parameters

c	The column name.

Member Function Documentation

condition& oos::condition::and_

(

const condition &

cond

)

Concatenate to conditions with logical and.

Returns

A reference to the condition.

std::string oos::condition::column ( ) const

inline

Returns the column name.

Returns

Returns the column name.

template<class T >

condition& oos::condition::equal ( const T &  val )

inline

Evalutes the value of the column with the given value to equal.

Template Parameters

T	The type of the value.

Parameters

val	The value to compares

Returns

A reference to the condition.

template<class T >

condition& oos::condition::greater ( const T &  val )

inline

Evalutes the value of the column with the given value to greater than.

Template Parameters

T	The type of the value.

Parameters

val	The value to compares

Returns

A reference to the condition.

template<class T >

condition& oos::condition::greater_equal ( const T &  val )

inline

Evalutes the value of the column with the given value to equal or greater than.

Template Parameters

T	The type of the value.

Parameters

val	The value to compares

Returns

A reference to the condition.

template<class T >

condition& oos::condition::less ( const T &  val )

inline

Evalutes the value of the column with the given value to less than.

Template Parameters

T	The type of the value.

Parameters

val	The value to compares

Returns

A reference to the condition.

template<class T >

condition& oos::condition::less_equal ( const T &  val )

inline

Evalutes the value of the column with the given value to equal or less than.

Template Parameters

T	The type of the value.

Parameters

val	The value to compares

Returns

A reference to the condition.

template<class T >

condition& oos::condition::not_equal ( const T &  val )

inline

Evalutes the value of the column with the given value to not equal.

Template Parameters

T	The type of the value.

Parameters

val	The value to compares

Returns

A reference to the condition.

condition& oos::condition::not_null ( )

inline

Evalutes the value of the column to not null.

Returns

A reference to the condition.

condition& oos::condition::null ( )

inline

Evalutes the value of the column to null.

Returns

A reference to the condition.

condition& oos::condition::or_

(

const condition &

cond

)

Concatenate to conditions with logical or.

Returns

A reference to the condition.

unsigned long oos::condition::size ( ) const

inline

Returns the size of the data

Returns

The size of the data.

std::string oos::condition::str ( bool  prepared ) const

inline

Returns the string representation of the condition. With the prepared flag set to true the condition string is put together for preppared statements.

Parameters

prepared

Indicates wether the condition is for prepared statements or not.

Returns

A reference to the condition.

data_type_t oos::condition::type ( ) const

inline

Returns the data type.

Returns

The data type.

bool oos::condition::valid ( ) const

inline

Returns wether the condition is in a valid state. This means a column name, an operator and a value must be set.

Returns

True if the condition is in a valid state.

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

• database/condition.hpp