/* * Copyright (c) 2008, 2009 Sun Microsystems. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 * which accompanies this distribution. * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html * and the Eclipse Distribution License is available at * http://www.eclipse.org/org/documents/edl-v10.php. * * Contributors: * Linda DeMichiel - Java Persistence 2.0 - Version 2.0 (October 1, 2009) * Specification available from http://jcp.org/en/jsr/detail?id=317 */ // $Id: Lob.java 20957 2011-06-13 09:58:51Z stliu $ package javax.persistence; import java.lang.annotation.Target; import java.lang.annotation.Retention; import static java.lang.annotation.ElementType.FIELD; import static java.lang.annotation.ElementType.METHOD; import static java.lang.annotation.RetentionPolicy.RUNTIME; /** * Specifies that a persistent property or field should be persisted * as a large object to a database-supported large object type. * * <p> Portable applications should use the <code>Lob</code> annotation * when mapping to a database Lob type. The <code>Lob</code> * annotation may be used in conjunction with the {@link Basic} * annotation or the {@link ElementCollection} annotation when the * element collection value is of basic type. A <code>Lob</code> may * be either a binary or character type. * * <p> The <code>Lob</code> type is inferred from the type of the * persistent field or property, and except for string and * character-based types defaults to Blob. * <pre> * * Example 1: * * @Lob @Basic(fetch=LAZY) * @Column(name="REPORT") * protected String report; * * Example 2: * * @Lob @Basic(fetch=LAZY) * @Column(name="EMP_PIC", columnDefinition="BLOB NOT NULL") * protected byte[] pic; * * </pre> * * @see Basic * @see ElementCollection * * @since Java Persistence 1.0 */ @Target({METHOD, FIELD}) @Retention(RUNTIME) public @interface Lob { }