includes/filerepo/ForeignDBViaLBRepo.php

   1 <?php
   2 /**
   3  * A foreign repository with a MediaWiki database accessible via the configured LBFactory
   4  *
   5  * @file
   6  * @ingroup FileRepo
   7  */
   8
   9 /**
  10  * A foreign repository with a MediaWiki database accessible via the configured LBFactory
  11  *
  12  * @ingroup FileRepo
  13  */
  14 class ForeignDBViaLBRepo extends LocalRepo {
  15         var $wiki, $dbName, $tablePrefix;
  16         var $fileFactory = array( 'ForeignDBFile', 'newFromTitle' );
  17         var $fileFromRowFactory = array( 'ForeignDBFile', 'newFromRow' );
  18
  19         function __construct( $info ) {
  20                 parent::__construct( $info );
  21                 $this->wiki = $info['wiki'];
  22                 list( $this->dbName, $this->tablePrefix ) = wfSplitWikiID( $this->wiki );
  23                 $this->hasSharedCache = $info['hasSharedCache'];
  24         }
  25
  26         function getMasterDB() {
  27                 return wfGetDB( DB_MASTER, array(), $this->wiki );
  28         }
  29
  30         function getSlaveDB() {
  31                 return wfGetDB( DB_SLAVE, array(), $this->wiki );
  32         }
  33
  34         function hasSharedCache() {
  35                 return $this->hasSharedCache;
  36         }
  37
  38         /**
  39          * Get a key on the primary cache for this repository.
  40          * Returns false if the repository's cache is not accessible at this site.
  41          * The parameters are the parts of the key, as for wfMemcKey().
  42          * @return bool|string
  43          */
  44         function getSharedCacheKey( /*...*/ ) {
  45                 if ( $this->hasSharedCache() ) {
  46                         $args = func_get_args();
  47                         array_unshift( $args, $this->wiki );
  48                         return implode( ':', $args );
  49                 } else {
  50                         return false;
  51                 }
  52         }
  53
  54         protected function assertWritableRepo() {
  55                 throw new MWException( get_class( $this ) . ': write operations are not supported.' );
  56         }
  57 }