includes/filerepo/ForeignDBRepo.php

   1 <?php
   2 /**
   3  * A foreign repository with an accessible MediaWiki database
   4  *
   5  * @file
   6  * @ingroup FileRepo
   7  */
   8
   9 /**
  10  * A foreign repository with an accessible MediaWiki database
  11  *
  12  * @ingroup FileRepo
  13  */
  14 class ForeignDBRepo extends LocalRepo {
  15         # Settings
  16         var $dbType, $dbServer, $dbUser, $dbPassword, $dbName, $dbFlags,
  17                 $tablePrefix, $hasSharedCache;
  18
  19         # Other stuff
  20         var $dbConn;
  21         var $fileFactory = array( 'ForeignDBFile', 'newFromTitle' );
  22         var $fileFromRowFactory = array( 'ForeignDBFile', 'newFromRow' );
  23
  24         function __construct( $info ) {
  25                 parent::__construct( $info );
  26                 $this->dbType = $info['dbType'];
  27                 $this->dbServer = $info['dbServer'];
  28                 $this->dbUser = $info['dbUser'];
  29                 $this->dbPassword = $info['dbPassword'];
  30                 $this->dbName = $info['dbName'];
  31                 $this->dbFlags = $info['dbFlags'];
  32                 $this->tablePrefix = $info['tablePrefix'];
  33                 $this->hasSharedCache = $info['hasSharedCache'];
  34         }
  35
  36         function getMasterDB() {
  37                 if ( !isset( $this->dbConn ) ) {
  38                         $this->dbConn = DatabaseBase::factory( $this->dbType,
  39                                 array(
  40                                         'host' => $this->dbServer,
  41                                         'user'   => $this->dbUser,
  42                                         'password' => $this->dbPassword,
  43                                         'dbname' => $this->dbName,
  44                                         'flags' => $this->dbFlags,
  45                                         'tablePrefix' => $this->tablePrefix
  46                                 )
  47                         );
  48                 }
  49                 return $this->dbConn;
  50         }
  51
  52         function getSlaveDB() {
  53                 return $this->getMasterDB();
  54         }
  55
  56         function hasSharedCache() {
  57                 return $this->hasSharedCache;
  58         }
  59
  60         /**
  61          * Get a key on the primary cache for this repository.
  62          * Returns false if the repository's cache is not accessible at this site.
  63          * The parameters are the parts of the key, as for wfMemcKey().
  64          * @return bool|mixed
  65          */
  66         function getSharedCacheKey( /*...*/ ) {
  67                 if ( $this->hasSharedCache() ) {
  68                         $args = func_get_args();
  69                         array_unshift( $args, $this->dbName, $this->tablePrefix );
  70                         return call_user_func_array( 'wfForeignMemcKey', $args );
  71                 } else {
  72                         return false;
  73                 }
  74         }
  75
  76         protected function assertWritableRepo() {
  77                 throw new MWException( get_class( $this ) . ': write operations are not supported.' );
  78         }
  79 }