protected $db;
/**
- * @var string $table The name of the table to read from
+ * @var string|array $table The name or names of the table to read from
*/
protected $table;
/**
* @param IDatabase $db The database to read from
- * @param string $table The name of the table to read from
+ * @param string|array $table The name or names of the table to read from
* @param string|array $primaryKey The name or names of the primary key columns
* @param integer $batchSize The number of rows to fetch per iteration
* @throws MWException
*/
public function extractPrimaryKeys( $row ) {
$pk = [];
- foreach ( $this->primaryKey as $column ) {
- $pk[$column] = $row->$column;
+ foreach ( $this->primaryKey as $alias => $column ) {
+ $name = is_numeric( $alias ) ? $column : $alias;
+ $pk[$name] = $row->{$name};
}
return $pk;
}
}
/**
- * @return boolean True when the iterator is in a valid state
+ * @return bool True when the iterator is in a valid state
*/
public function valid() {
return (bool)$this->current;
}
/**
- * @return boolean True when this result set has rows
+ * @return bool True when this result set has rows
*/
public function hasChildren() {
return $this->current && count( $this->current );
$maxRow = end( $this->current );
$maximumValues = [];
- foreach ( $this->primaryKey as $column ) {
- $maximumValues[$column] = $this->db->addQuotes( $maxRow->$column );
+ foreach ( $this->primaryKey as $alias => $column ) {
+ $name = is_numeric( $alias ) ? $column : $alias;
+ $maximumValues[$column] = $this->db->addQuotes( $maxRow->{$name} );
}
$pkConditions = [];