diff -r d883d4ab7b9d -r 72950b29569e src/org/sonews/storage/impl/DrupalDatabaseProvider.java
--- a/src/org/sonews/storage/impl/DrupalDatabaseProvider.java	Sat Oct 08 23:32:18 2011 +0200
+++ b/src/org/sonews/storage/impl/DrupalDatabaseProvider.java	Sun Oct 09 00:00:25 2011 +0200
@@ -18,14 +18,24 @@
 package org.sonews.storage.impl;
 
 import java.sql.SQLException;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 import org.sonews.storage.Storage;
 import org.sonews.storage.StorageBackendException;
+import org.sonews.storage.StorageProvider;
 
 /**
  *
  * @author František Kučera (frantovo.cz)
  */
-public class DrupalDatabaseProvider extends JDBCDatabaseProvider {
+public class DrupalDatabaseProvider implements StorageProvider {
+
+	protected static final Map<Thread, DrupalDatabase> instances = new ConcurrentHashMap<Thread, DrupalDatabase>();
+
+	@Override
+	public boolean isSupported(String uri) {
+		return uri.startsWith("jdbc:mysql") || uri.startsWith("jdbc:postgresql");
+	}
 
 	@Override
 	public Storage storage(Thread thread)