javax.persistence.metamodel.SingularAttribute Maven / Gradle / Ivy
/*
* 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 SingularAttribute represents persistent
* single-valued properties or fields.
*
* @param The type containing the represented attribute
* @param The type of the represented attribute
*
* @since 2.0
*/
public interface SingularAttribute
extends Attribute, Bindable {
/**
* 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 getType();
}