/* * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package java.sql;  /** * Enumeration for pseudo/hidden column usage. * * @since 1.7 * @see DatabaseMetaData#getPseudoColumns */public enum PseudoColumnUsage {     /**     * The pseudo/hidden column may only be used in a SELECT list.     */    SELECT_LIST_ONLY,     /**     * The pseudo/hidden column may only be used in a WHERE clause.     */    WHERE_CLAUSE_ONLY,     /**     * There are no restrictions on the usage of the pseudo/hidden columns.     */    NO_USAGE_RESTRICTIONS,     /**     * The usage of the pseudo/hidden column cannot be determined.     */    USAGE_UNKNOWN }