mirror of https://github.com/apache/cloudstack.git
100 lines
3.9 KiB
Java
100 lines
3.9 KiB
Java
/*
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
|
|
*
|
|
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* The contents of this file are subject to the terms of either the GNU
|
|
* General Public License Version 2 only ("GPL") or the Common Development
|
|
* and Distribution License("CDDL") (collectively, the "License"). You
|
|
* may not use this file except in compliance with the License. You can obtain
|
|
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
|
|
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
|
|
* language governing permissions and limitations under the License.
|
|
*
|
|
* When distributing the software, include this License Header Notice in each
|
|
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
|
|
* Sun designates this particular file as subject to the "Classpath" exception
|
|
* as provided by Sun in the GPL Version 2 section of the License file that
|
|
* accompanied this code. If applicable, add the following below the License
|
|
* Header, with the fields enclosed by brackets [] replaced by your own
|
|
* identifying information: "Portions Copyrighted [year]
|
|
* [name of copyright owner]"
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* If you wish your version of this file to be governed by only the CDDL or
|
|
* only the GPL Version 2, indicate your decision by adding "[Contributor]
|
|
* elects to include this software in this distribution under the [CDDL or GPL
|
|
* Version 2] license." If you don't indicate a single choice of license, a
|
|
* recipient has the option to distribute your version of this file under
|
|
* either the CDDL, the GPL Version 2 or to extend the choice of license to
|
|
* its licensees as provided above. However, if you add GPL Version 2 code
|
|
* and therefore, elected the GPL Version 2 license, then the option applies
|
|
* only if the new code is made subject to such option by the copyright
|
|
* holder.
|
|
*/
|
|
package javax.persistence;
|
|
|
|
import java.lang.annotation.Target;
|
|
import java.lang.annotation.Retention;
|
|
import javax.persistence.CascadeType;
|
|
import static java.lang.annotation.ElementType.FIELD;
|
|
import static java.lang.annotation.ElementType.METHOD;
|
|
import static java.lang.annotation.RetentionPolicy.RUNTIME;
|
|
import static javax.persistence.FetchType.EAGER;
|
|
|
|
/**
|
|
* This annotation defines a single-valued association to another
|
|
* entity class that has many-to-one multiplicity. It is not normally
|
|
* necessary to specify the target entity explicitly since it can
|
|
* usually be inferred from the type of the object being referenced.
|
|
*
|
|
* <pre>
|
|
*
|
|
* Example:
|
|
*
|
|
* @ManyToOne(optional=false)
|
|
* @JoinColumn(name="CUST_ID", nullable=false, updatable=false)
|
|
* public Customer getCustomer() { return customer; }
|
|
* </pre>
|
|
*
|
|
* @since Java Persistence 1.0
|
|
*/
|
|
@Target({METHOD, FIELD})
|
|
@Retention(RUNTIME)
|
|
|
|
public @interface ManyToOne {
|
|
|
|
/**
|
|
* (Optional) The entity class that is the target of
|
|
* the association.
|
|
*
|
|
* <p> Defaults to the type of the field or property
|
|
* that stores the association.
|
|
*/
|
|
Class targetEntity() default void.class;
|
|
|
|
/**
|
|
* (Optional) The operations that must be cascaded to
|
|
* the target of the association.
|
|
*
|
|
* <p> By default no operations are cascaded.
|
|
*/
|
|
CascadeType[] cascade() default {};
|
|
|
|
/**
|
|
* (Optional) Whether the association should be lazily
|
|
* loaded or must be eagerly fetched. The {@link FetchType#EAGER EAGER}
|
|
* strategy is a requirement on the persistence provider runtime that
|
|
* the associated entity must be eagerly fetched. The {@link FetchType#LAZY
|
|
* LAZY} strategy is a hint to the persistence provider runtime.
|
|
*/
|
|
FetchType fetch() default EAGER;
|
|
|
|
/**
|
|
* (Optional) Whether the association is optional. If set
|
|
* to false then a non-null relationship must always exist.
|
|
*/
|
|
boolean optional() default true;
|
|
}
|