<?php
+
+namespace Wikimedia\Rdbms;
+
+use stdClass;
+use RuntimeException;
+
/**
* Result wrapper for grabbing data queried from an IDatabase object
*
*
* @ingroup Database
*/
-class ResultWrapper implements Iterator {
+class ResultWrapper implements IResultWrapper {
/** @var resource|array|null Optional underlying result handle for subclass usage */
public $result;
}
}
- /**
- * Get the number of rows in a result object
- *
- * @return int
- */
public function numRows() {
return $this->getDB()->numRows( $this );
}
- /**
- * Fetch the next row from the given result object, in object form. Fields can be retrieved with
- * $row->fieldname, with fields acting like member variables. If no more rows are available,
- * false is returned.
- *
- * @return stdClass|bool
- * @throws DBUnexpectedError Thrown if the database returns an error
- */
public function fetchObject() {
return $this->getDB()->fetchObject( $this );
}
- /**
- * Fetch the next row from the given result object, in associative array form. Fields are
- * retrieved with $row['fieldname']. If no more rows are available, false is returned.
- *
- * @return array|bool
- * @throws DBUnexpectedError Thrown if the database returns an error
- */
public function fetchRow() {
return $this->getDB()->fetchRow( $this );
}
- /**
- * Change the position of the cursor in a result object.
- * See mysql_data_seek()
- *
- * @param int $row
- */
public function seek( $row ) {
$this->getDB()->dataSeek( $this, $row );
}
- /**
- * Free a result object
- *
- * This either saves memory in PHP (buffered queries) or on the server (unbuffered queries).
- * In general, queries are not large enough in result sets for this to be worth calling.
- */
public function free() {
if ( $this->db ) {
$this->db->freeResult( $this );
*/
private function getDB() {
if ( !$this->db ) {
- throw new RuntimeException( get_class( $this ) . ' needs a DB handle for iteration.' );
+ throw new RuntimeException( static::class . ' needs a DB handle for iteration.' );
}
return $this->db;
$this->currentRow = null;
}
- /**
- * @return stdClass|array|bool
- */
function current() {
if ( is_null( $this->currentRow ) ) {
$this->next();
return $this->currentRow;
}
- /**
- * @return int
- */
function key() {
return $this->pos;
}
- /**
- * @return stdClass
- */
function next() {
$this->pos++;
$this->currentRow = $this->fetchObject();
return $this->current() !== false;
}
}
+
+class_alias( ResultWrapper::class, 'ResultWrapper' );