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-rw-r--r--connectivity/source/drivers/jdbc/jdbc.component36
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diff --git a/connectivity/source/drivers/jdbc/jdbc.component b/connectivity/source/drivers/jdbc/jdbc.component
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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ -->
+
+<!-- Recent Java 6 VMs make calls to JNI Attach/DetachCurrentThread (which this
+ code does extensively) very expensive. A follow-up JVM fix reduced the
+ overhead significantly again for all threads but the main thread. So a
+ quick hack to improve performance of this component again is to confine it
+ in the affine apartment (where all code will run on a single, dedicated
+ thread that is guaranteed no to be the main thread). However, a better fix
+ would still be to redesign the code so that it does not call
+ Attach/DetachCurrentThread so frequently:
+-->
+
+<component loader="com.sun.star.loader.SharedLibrary"
+ environment="@CPPU_ENV@:affine" prefix="jdbc"
+ xmlns="http://openoffice.org/2010/uno-components">
+ <implementation name="com.sun.star.comp.sdbc.JDBCDriver">
+ <service name="com.sun.star.sdbc.Driver"/>
+ </implementation>
+</component>