/**
* Method to initialize the database tables.
*
* @return void
*
* @since 12.1
* @throws RuntimeException
*/
protected function initializeTables()
{
// Check if the tables have been initialized.
if (!$this->initialized) {
// Fetch the column data for each table.
foreach ($this->tables as $alias => $table) {
// Get the table columns.
$columns = $this->db->getTableColumns($table, false);
// Set the table columns.
$this->columns[$alias] = $columns;
}
// Set the initialized flag.
$this->initialized = true;
}
}
/**
* Get the columns from database table.
*
* @return mixed An array of the field names, or false if an error occurs.
*
* @since 11.1
*/
public function getFields()
{
static $cache = null;
if ($cache === null) {
// Lookup the fields for this table only once.
$name = $this->_tbl;
$fields = $this->_db->getTableColumns($name, false);
if (empty($fields)) {
$e = new JException(JText::_('JLIB_DATABASE_ERROR_COLUMNS_NOT_FOUND'));
$this->setError($e);
return false;
}
$cache = $fields;
}
return $cache;
}
