6e9b4f0e9c
Per wikitech-l consensus: https://lists.wikimedia.org/pipermail/wikitech-l/2016-February/084821.html Notes: * Disabled CallTimePassByReference due to false positives (T127163) Change-Id: I2c8ce713ce6600a0bb7bf67537c87044c7a45c4b
59 lines
1.7 KiB
PHP
59 lines
1.7 KiB
PHP
<?php
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/**
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* This file contains database access object related constants.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Database
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*/
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/**
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* Helper class for DAO classes
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*
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* @since 1.26
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*/
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class DBAccessObjectUtils {
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/**
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* @param integer $bitfield
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* @param integer $flags IDBAccessObject::READ_* constant
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* @return bool Bitfield has flag $flag set
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*/
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public static function hasFlags( $bitfield, $flags ) {
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return ( $bitfield & $flags ) == $flags;
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}
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/**
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* Get an appropriate DB index and options for a query
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*
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* @param integer $bitfield
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* @return array (DB_MASTER/DB_SLAVE, SELECT options array)
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*/
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public static function getDBOptions( $bitfield ) {
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$index = self::hasFlags( $bitfield, IDBAccessObject::READ_LATEST )
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? DB_MASTER
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: DB_SLAVE;
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$options = [];
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if ( self::hasFlags( $bitfield, IDBAccessObject::READ_EXCLUSIVE ) ) {
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$options[] = 'FOR UPDATE';
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} elseif ( self::hasFlags( $bitfield, IDBAccessObject::READ_LOCKING ) ) {
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$options[] = 'LOCK IN SHARE MODE';
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}
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return [ $index, $options ];
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}
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}
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