/**
* constructor
* @param string $column_name
* @param mixed $value
* @return void
*/
function __construct($column_name, $value)
{
parent::__construct($column_name);
$this->value = $value;
}
function __construct($name)
{
$this->func = $name;
parent::__construct(array_slice(func_get_args(), 1));
}
/**
* constructor
* @param string $column_name
* @param object $argument
* @return void
*/
function __construct($column_name, $argument)
{
parent::__construct($column_name);
$this->argument = $argument;
}
/**
* constructor
* @param string $column_name
* @param string $alias
* @return void
*/
function __construct($column_name, $alias = NULL)
{
parent::__construct($column_name);
$this->column_alias = $alias;
}
