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::newFromType( $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          */
  65         function getSharedCacheKey( /*...*/ ) {
  66                 if ( $this->hasSharedCache() ) {
  67                         $args = func_get_args();
  68                         array_unshift( $args, $this->dbName, $this->tablePrefix );
  69                         return call_user_func_array( 'wfForeignMemcKey', $args );
  70                 } else {
  71                         return false;
  72                 }
  73         }
  74
  75         function store( $srcPath, $dstZone, $dstRel, $flags = 0 ) {
  76                 throw new MWException( get_class($this) . ': write operations are not supported' );
  77         }
  78         function publish( $srcPath, $dstRel, $archiveRel, $flags = 0 ) {
  79                 throw new MWException( get_class($this) . ': write operations are not supported' );
  80         }
  81         function deleteBatch( $sourceDestPairs ) {
  82                 throw new MWException( get_class($this) . ': write operations are not supported' );
  83         }
  84 }