/*

 * 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

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 * 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

}