109 lines
2.9 KiB
PHP
109 lines
2.9 KiB
PHP
<?php
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namespace Wikimedia\Rdbms;
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use mysqli_result;
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class MysqliResultWrapper extends ResultWrapper {
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/** @var DatabaseMySQL */
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private $db;
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/** @var mysqli_result|null */
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private $result;
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/**
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* @internal
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* @param DatabaseMySQL $db
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* @param mysqli_result $result
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*/
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public function __construct( DatabaseMySQL $db, mysqli_result $result ) {
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$this->db = $db;
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$this->result = $result;
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}
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protected function doNumRows() {
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// We are not checking for any errors here, since
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// there are no errors mysql_num_rows can cause.
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// See https://dev.mysql.com/doc/refman/5.7/en/mysql-fetch-row.html.
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// See https://phabricator.wikimedia.org/T44430
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return $this->result->num_rows;
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}
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private function checkFetchError() {
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$errno = $this->db->lastErrno();
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// Unfortunately, mysql_fetch_array does not reset the last errno.
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// Only check for CR_SERVER_LOST and CR_UNKNOWN_ERROR, as
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// these are the only errors mysql_fetch_array can cause.
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// See https://dev.mysql.com/doc/refman/5.7/en/mysql-fetch-row.html.
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if ( $errno == 2000 || $errno == 2013 ) {
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throw new DBUnexpectedError(
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$this->db,
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'Error in fetchRow(): ' . htmlspecialchars( $this->db->lastError() )
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);
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}
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}
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protected function doFetchObject() {
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$object = $this->result->fetch_object();
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$this->checkFetchError();
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if ( $object === null ) {
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return false;
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}
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return $object;
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}
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protected function doFetchRow() {
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$array = $this->result->fetch_array();
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$this->checkFetchError();
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if ( $array === null ) {
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return false;
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}
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return $array;
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}
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protected function doSeek( $pos ) {
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$this->result->data_seek( $pos );
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}
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protected function doFree() {
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$this->result = null;
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}
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protected function doGetFieldNames() {
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$names = [];
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foreach ( $this->result->fetch_fields() as $fieldInfo ) {
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$names[] = $fieldInfo->name;
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}
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return $names;
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}
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/**
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* Get information about a field in the result set
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*
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* @param string $fieldName
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* @return bool|MySQLField
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* @internal For DatabaseMySQL::fieldInfo() only
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*
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*/
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public function getInternalFieldInfo( $fieldName ) {
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for ( $i = 0; $i < $this->result->field_count; $i++ ) {
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$meta = $this->result->fetch_field_direct( $i );
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if ( $fieldName == $meta->name ) {
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// Add missing properties to result (using flags property)
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// which will be part of function mysql-fetch-field for backward compatibility
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$meta->not_null = $meta->flags & MYSQLI_NOT_NULL_FLAG;
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$meta->primary_key = $meta->flags & MYSQLI_PRI_KEY_FLAG;
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$meta->unique_key = $meta->flags & MYSQLI_UNIQUE_KEY_FLAG;
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$meta->multiple_key = $meta->flags & MYSQLI_MULTIPLE_KEY_FLAG;
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$meta->binary = $meta->flags & MYSQLI_BINARY_FLAG;
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$meta->numeric = $meta->flags & MYSQLI_NUM_FLAG;
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$meta->blob = $meta->flags & MYSQLI_BLOB_FLAG;
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$meta->unsigned = $meta->flags & MYSQLI_UNSIGNED_FLAG;
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$meta->zerofill = $meta->flags & MYSQLI_ZEROFILL_FLAG;
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return new MySQLField( $meta );
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}
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}
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return false;
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}
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}
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