| /* |
| * Copyright (c) 2008, 2019 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Linda DeMichiel - 2.1 |
| // Linda DeMichiel - 2.0 |
| |
| |
| package javax.persistence.metamodel; |
| |
| /** |
| * Instances of the type <code>SingularAttribute</code> represents persistent |
| * single-valued properties or fields. |
| * |
| * @param <X> The type containing the represented attribute |
| * @param <T> The type of the represented attribute |
| * |
| * @since 2.0 |
| */ |
| public interface SingularAttribute<X, T> |
| extends Attribute<X, T>, Bindable<T> { |
| |
| /** |
| * Is the attribute an id attribute. This method will return |
| * true if the attribute is an attribute that corresponds to |
| * a simple id, an embedded id, or an attribute of an id class. |
| * @return boolean indicating whether the attribute is an id |
| */ |
| boolean isId(); |
| |
| /** |
| * Is the attribute a version attribute. |
| * @return boolean indicating whether the attribute is |
| * a version attribute |
| */ |
| boolean isVersion(); |
| |
| /** |
| * Can the attribute be null. |
| * @return boolean indicating whether the attribute can |
| * be null |
| */ |
| boolean isOptional(); |
| |
| /** |
| * Return the type that represents the type of the attribute. |
| * @return type of attribute |
| */ |
| Type<T> getType(); |
| } |