/*******************************************************************************
* Copyright (c) 1998, 2009 Oracle. 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.
* 
* The API for this class and its comments are derived from the JPA 2.0 specification 
* which is developed under the Java Community Process (JSR 317) and is copyright 
* Sun Microsystems, Inc. 
*
* Contributors:
*     pkrogh -        Java Persistence API 2.0 Public Draft
*                     Specification and licensing terms available from
*                     http://jcp.org/en/jsr/detail?id=317
*
* EARLY ACCESS - PUBLIC DRAFT
* This is an implementation of an early-draft specification developed under the 
* Java Community Process (JCP) and is made available for testing and evaluation 
* purposes only. The code is not compatible with any specification of the JCP.
******************************************************************************/
package javax.persistence;

/**
 * Thrown by the persistence provider when an pessimistic locking conflict
 * occurs as a result of a lock timeout. This exception may be thrown as part 
 * of an API call, a flush or at commit time. The current transaction, if one 
 * is active, will be not be marked for rollback.
 *
 * @since Java Persistence API 2.0
 */
public class LockTimeoutException extends PersistenceException {
    /** The object that caused the exception */
    Object entity;

    /** 
     * Constructs a new <code>LockTimeoutException</code> exception 
     * with <code>null</code> as its detail message.
     */
    public LockTimeoutException() {
        super();
    }

    /** 
     * Constructs a new <code>LockTimeoutException</code> exception 
     * with the specified detail message.
     * @param   message   the detail message.
     */
    public LockTimeoutException(String message) {
        super(message);
    }

    /** 
     * Constructs a new <code>LockTimeoutException</code> exception 
     * with the specified detail message and cause.
     * @param   message   the detail message.
     * @param   cause     the cause.
     */
    public LockTimeoutException(String message, Throwable cause) {
        super(message, cause);
    }

    /** 
     * Constructs a new <code>LockTimeoutException</code> exception 
     * with the specified cause.
     * @param   cause     the cause.
     */
    public LockTimeoutException(Throwable cause) {
        super(cause);
    }

    /** 
     * Constructs a new <code>LockTimeoutException</code> exception 
     * with the specified entity.
     * @param   entity     the entity.
     */
    public LockTimeoutException(Object entity) {
        this.entity = entity;
    }

    /** 
     * Constructs a new <code>LockTimeoutException</code> exception 
     * with the specified detail message, cause, and entity.
     * @param   message   the detail message.
     * @param   cause     the cause.
     * @param   entity     the entity.
     */
    public LockTimeoutException(String message, Throwable cause, Object entity) {
        super(message, cause);
        this.entity = entity;
    }
    
    /**
     * Returns the entity that caused this exception.
     * @return the entity.
     */
    public Object getEntity() {
        return this.entity;
    }
}