public function getPrimary($table)
{
$primary = & $this->structure['primary'][$table];
if (isset($primary)) {
return $primary;
}
if ($this->connection->getAttribute(PDO::ATTR_DRIVER_NAME) === 'sqlite') {
$query = $this->connection->query("PRAGMA table_info($table)");
$primaryKey = 'pk';
$primaryVal = '1';
$primaryKeyColumn = 'name';
} else {
$query = $this->connection->query("EXPLAIN $table");
$primaryKey = 3;
$primaryVal = 'PRI';
$primaryKeyColumn = 0;
}
foreach ($query as $column) {
if ($column[$primaryKey] === $primaryVal) { // 3 - "Key" is not compatible with PDO::CASE_LOWER
if ($primary !== NULL) {
$primary = FALSE; // multi-column primary key is not supported
break;
}
$primary = $column[$primaryKeyColumn];
}
}
return $primary;
}
protected function topString()
{
if ($this->limit !== NULL && $this->connection->getAttribute(PDO::ATTR_DRIVER_NAME) === 'dblib') {
return " TOP ($this->limit)"; //! offset is not supported
}
return '';
}
public function __construct($tableName, NConnection $connection, IReflection $reflection)
{
$this->tableName = $tableName;
$this->databaseReflection = $reflection;
$this->driver = $connection->getSupplementalDriver();
$this->driverName = $connection->getAttribute(PDO::ATTR_DRIVER_NAME);
$this->delimitedTable = $this->tryDelimite($tableName);
}
