/*
 * Copyright (c) 2008, 2009, 2011 Oracle, Inc. 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.
 */
package javax.persistence;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.FIELD;
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.

Portable applications should use the Lob annotation when mapping to a database Lob type. The Lob annotation may be used in conjunction with the Basic annotation or the ElementCollection annotation when the element collection value is of basic type. A Lob may be either a binary or character type.

The Lob type is inferred from the type of the persistent field or property, and except for string and character-based types defaults to Blob.

  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;
See Also:
Since:Java Persistence 1.0
/** * Specifies that a persistent property or field should be persisted * as a large object to a database-supported large object type. * <p> * <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> * <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: * * &#064;Lob &#064;Basic(fetch=LAZY) * &#064;Column(name="REPORT") * protected String report; * * Example 2: * * &#064;Lob &#064;Basic(fetch=LAZY) * &#064;Column(name="EMP_PIC", columnDefinition="BLOB NOT NULL") * protected byte[] pic; * * </pre> * * @see Basic * @see ElementCollection * @since Java Persistence 1.0 */
@Target({FIELD}) @Retention(RUNTIME) public @interface Lob { }