includes/installer/MssqlUpdater.php

   1 <?php
   2 /**
   3  * Microsoft SQL Server-specific installer.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Deployment
  22  */
  23
  24 /**
  25  * Class for setting up the MediaWiki database using Microsoft SQL Server.
  26  *
  27  * @ingroup Deployment
  28  * @since 1.23
  29  */
  30
  31 class MssqlUpdater extends DatabaseUpdater {
  32
  33         /**
  34          * @var DatabaseMssql
  35          */
  36         protected $db;
  37
  38         protected function getCoreUpdateList() {
  39                 return array(
  40                         // 1.23
  41                         array( 'addField', 'mwuser', 'user_password_expires', 'patch-user_password_expires.sql' ),
  42
  43                         // 1.24
  44                         array( 'addField', 'page', 'page_lang', 'patch-page-page_lang.sql' ),
  45
  46                         // 1.25
  47                         array( 'dropTable', 'hitcounter' ),
  48                         array( 'dropField', 'site_stats', 'ss_total_views', 'patch-drop-ss_total_views.sql' ),
  49                         array( 'dropField', 'page', 'page_counter', 'patch-drop-page_counter.sql' ),
  50                         // Constraint updates
  51                         array( 'updateConstraints', 'category_types', 'categorylinks', 'cl_type' ),
  52                         array( 'updateConstraints', 'major_mime', 'filearchive', 'fa_major_mime' ),
  53                         array( 'updateConstraints', 'media_type', 'filearchive', 'fa_media_type' ),
  54                         array( 'updateConstraints', 'major_mime', 'oldimage', 'oi_major_mime' ),
  55                         array( 'updateConstraints', 'media_type', 'oldimage', 'oi_media_type' ),
  56                         array( 'updateConstraints', 'major_mime', 'image', 'img_major_mime' ),
  57                         array( 'updateConstraints', 'media_type', 'image', 'img_media_type' ),
  58                         array( 'updateConstraints', 'media_type', 'uploadstash', 'us_media_type' ),
  59                         // END: Constraint updates
  60
  61                         array( 'modifyField', 'image', 'img_major_mime',
  62                                 'patch-img_major_mime-chemical.sql' ),
  63                         array( 'modifyField', 'oldimage', 'oi_major_mime',
  64                                 'patch-oi_major_mime-chemical.sql' ),
  65                         array( 'modifyField', 'filearchive', 'fa_major_mime',
  66                                 'patch-fa_major_mime-chemical.sql' ),
  67                 );
  68         }
  69
  70         /**
  71          * Drops unnamed and creates named constraints following the pattern
  72          * <column>_ckc
  73          *
  74          * @param string $constraintType
  75          * @param string $table Name of the table to which the field belongs
  76          * @param string $field Name of the field to modify
  77          * @return bool False if patch is skipped.
  78          */
  79         protected function updateConstraints( $constraintType, $table, $field ) {
  80                 global $wgDBname, $wgDBmwschema;
  81
  82                 if ( !$this->doTable( $table ) ) {
  83                         return true;
  84                 }
  85
  86                 $this->output( "...updating constraints on [$table].[$field] ..." );
  87                 $updateKey = "$field-$constraintType-ck";
  88                 if ( !$this->db->tableExists( $table, __METHOD__ ) ) {
  89                         $this->output( "...$table table does not exist, skipping modify field patch.\n" );
  90                         return true;
  91                 } elseif ( !$this->db->fieldExists( $table, $field, __METHOD__ ) ) {
  92                         $this->output( "...$field field does not exist in $table table, " .
  93                                 "skipping modify field patch.\n" );
  94                         return true;
  95                 } elseif ( $this->updateRowExists( $updateKey ) ) {
  96                         $this->output( "...$field in table $table already patched.\n" );
  97                         return true;
  98                 }
  99
 100                 # After all checks passed, start the update
 101                 $this->insertUpdateRow( $updateKey );
 102                 $path = 'named_constraints.sql';
 103                 $constraintMap = array(
 104                         'category_types' =>
 105                                 "($field in('page', 'subcat', 'file'))",
 106                         'major_mime'     =>
 107                                 "($field in('unknown', 'application', 'audio', 'image', 'text', 'video'," .
 108                                 " 'message', 'model', 'multipart'))",
 109                         'media_type'     =>
 110                                 "($field in('UNKNOWN', 'BITMAP', 'DRAWING', 'AUDIO', 'VIDEO', 'MULTIMEDIA'," .
 111                                 "'OFFICE', 'TEXT', 'EXECUTABLE', 'ARCHIVE'))"
 112                 );
 113                 $constraint = $constraintMap[$constraintType];
 114
 115                 # and hack-in those variables that should be replaced
 116                 # in our template file right now
 117                 $this->db->setSchemaVars( array(
 118                         'tableName'       => $table,
 119                         'fieldName'       => $field,
 120                         'checkConstraint' => $constraint,
 121                         'wgDBname'        => $wgDBname,
 122                         'wgDBmwschema'    => $wgDBmwschema,
 123                 ) );
 124
 125                 # Full path from file name
 126                 $path = $this->db->patchPath( $path );
 127
 128                 # No need for a cursor allowing result-iteration; just apply a patch
 129                 # store old value for re-setting later
 130                 $wasScrollable = $this->db->scrollableCursor( false );
 131
 132                 # Apply patch
 133                 $this->db->sourceFile( $path );
 134
 135                 # Reset DB instance to have original state
 136                 $this->db->setSchemaVars( false );
 137                 $this->db->scrollableCursor( $wasScrollable );
 138
 139                 $this->output( "done.\n" );
 140
 141                 return true;
 142         }
 143 }