/**
* This constructor instantiates this class using the specified model's name.
*
* @access public
* @param string $model the model's name
*/
public function __construct($model)
{
$name = $model;
$model = DB_ORM_Model::model_name($name);
$this->data_source = DB_DataSource::instance($model::data_source(DB_DataSource::MASTER_INSTANCE));
$builder = 'DB_' . $this->data_source->dialect . '_Insert_Builder';
$this->builder = new $builder($this->data_source);
$extension = DB_ORM_Model::builder_name($name);
if (class_exists($extension)) {
$this->extension = new $extension($this->builder);
}
$table = $model::table();
$this->builder->into($table);
$this->model = $model;
}
/**
* This constructor instantiates this class using the specified model's name.
*
* @access public
* @param string $model the model's name
* @param array $columns the columns to be selected
*/
public function __construct($model, array $columns = array())
{
$name = $model;
$model = DB_ORM_Model::model_name($name);
$this->data_source = DB_DataSource::instance($model::data_source(DB_DataSource::SLAVE_INSTANCE));
$builder = 'DB_' . $this->data_source->dialect . '_Select_Builder';
$this->table = $model::table();
$this->builder = new $builder($this->data_source, $columns);
if (empty($columns)) {
$this->builder->all("{$this->table}.*");
}
$this->builder->from($this->table);
$extension = DB_ORM_Model::builder_name($name);
if (class_exists($extension)) {
$this->extension = new $extension($this->builder);
}
$this->model = $model;
}
