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diff --git a/offapi/com/sun/star/form/component/DatabasePatternField.idl b/offapi/com/sun/star/form/component/DatabasePatternField.idl
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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 .
+ */
+#ifndef __com_sun_star_form_component_DatabasePatternField_idl__
+#define __com_sun_star_form_component_DatabasePatternField_idl__
+
+#include <com/sun/star/form/component/PatternField.idl>
+
+#include <com/sun/star/form/DataAwareControlModel.idl>
+
+
+
+ module com {  module sun {  module star {  module form {  module component {
+
+
+/** This service specifies a data-aware control model for entering text which matches a specific
+    pattern.
+ */
+published service DatabasePatternField
+{
+    service com::sun::star::form::component::PatternField;
+
+    service com::sun::star::form::DataAwareControlModel;
+
+
+    /** determines if an empty text should be treated as a `NULL` value.
+
+        <p>When the user enters text into a pattern field, and after this, the control
+        content is to be committed into the database field the control is bound to,
+        a decision must be made how to deal with empty strings.<br/>
+        This is controlled by this property.</p>
+
+        <p>If the property is set to `TRUE`, and an empty text is to be committed, this is
+        converted into `NULL`, else it is written as empty string.</p>
+     */
+    [property] boolean ConvertEmptyToNull;
+
+};
+
+
+}; }; }; }; };
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */