MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / includes / search / SearchEngineFactory.php

diff --git a/includes/search/SearchEngineFactory.php b/includes/search/SearchEngineFactory.php
new file mode 100644 (file)
index 0000000..613d33c
--- /dev/null
+++ b/includes/search/SearchEngineFactory.php
@@ -0,0 +1,65 @@
+<?php
+
+use Wikimedia\Rdbms\IDatabase;
+
+/**
+ * Factory class for SearchEngine.
+ * Allows to create engine of the specific type.
+ */
+class SearchEngineFactory {
+       /**
+        * Configuration for SearchEngine classes.
+        * @var SearchEngineConfig
+        */
+       private $config;
+
+       public function __construct( SearchEngineConfig $config ) {
+               $this->config = $config;
+       }
+
+       /**
+        * Create SearchEngine of the given type.
+        * @param string $type
+        * @return SearchEngine
+        */
+       public function create( $type = null ) {
+               $dbr = null;
+
+               $configType = $this->config->getSearchType();
+               $alternatives = $this->config->getSearchTypes();
+
+               if ( $type && in_array( $type, $alternatives ) ) {
+                       $class = $type;
+               } elseif ( $configType !== null ) {
+                       $class = $configType;
+               } else {
+                       $dbr = wfGetDB( DB_REPLICA );
+                       $class = self::getSearchEngineClass( $dbr );
+               }
+
+               $search = new $class( $dbr );
+               return $search;
+       }
+
+       /**
+        * @param IDatabase $db
+        * @return string SearchEngine subclass name
+        * @since 1.28
+        */
+       public static function getSearchEngineClass( IDatabase $db ) {
+               switch ( $db->getType() ) {
+                       case 'sqlite':
+                               return 'SearchSqlite';
+                       case 'mysql':
+                               return 'SearchMySQL';
+                       case 'postgres':
+                               return 'SearchPostgres';
+                       case 'mssql':
+                               return 'SearchMssql';
+                       case 'oracle':
+                               return 'SearchOracle';
+                       default:
+                               return 'SearchEngineDummy';
+               }
+       }
+}