/*
 *
 *    OPEN-XCHANGE legal information
 *
 *    All intellectual property rights in the Software are protected by
 *    international copyright laws.
 *
 *
 *    In some countries OX, OX Open-Xchange, open xchange and OXtender
 *    as well as the corresponding Logos OX Open-Xchange and OX are registered
 *    trademarks of the Open-Xchange, Inc. group of companies.
 *    The use of the Logos is not covered by the GNU General Public License.
 *    Instead, you are allowed to use these Logos according to the terms and
 *    conditions of the Creative Commons License, Version 2.5, Attribution,
 *    Non-commercial, ShareAlike, and the interpretation of the term
 *    Non-commercial applicable to the aforementioned license is published
 *    on the web site http://www.open-xchange.com/EN/legal/index.html.
 *
 *    Please make sure that third-party modules and libraries are used
 *    according to their respective licenses.
 *
 *    Any modifications to this package must retain all copyright notices
 *    of the original copyright holder(s) for the original code used.
 *
 *    After any such modifications, the original and derivative code shall remain
 *    under the copyright of the copyright holder(s) and/or original author(s)per
 *    the Attribution and Assignment Agreement that can be located at
 *    http://www.open-xchange.com/EN/developer/. The contributing author shall be
 *    given Attribution for the derivative code and a license granting use.
 *
 *     Copyright (C) 2004-2011 Open-Xchange, Inc.
 *     Mail: info@open-xchange.com
 *
 *
 *     This program is free software; you can redistribute it and/or modify it
 *     under the terms of the GNU General Public License, Version 2 as published
 *     by the Free Software Foundation.
 *
 *     This program is distributed in the hope that it will be useful, but
 *     WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 *     or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 *     for more details.
 *
 *     You should have received a copy of the GNU General Public License along
 *     with this program; if not, write to the Free Software Foundation, Inc., 59
 *     Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

package com.openexchange.threadpool.internal;

import java.util.concurrent.RejectedExecutionHandler;

/**
 * {@link RejectedExecutionType} - The rejected execution type.
 * 
 * @author <a href="mailto:thorben.betten@open-xchange.com">Thorben Betten</a>
 */
public enum RejectedExecutionType {

    /**
     * Aborts execution by throwing an appropriate exception to the caller.
     */
    ABORT("abort", new CustomThreadPoolExecutor.AbortPolicy()),
    /**
     * The caller is considered to run the task if thread pool is unable to do so.
     */
    CALLER_RUNS("caller-runs", new CustomThreadPoolExecutor.CallerRunsPolicy()),
    /**
     * The task is silently discarded. No exception is thrown.
     */
    DISCARD("discard", new CustomThreadPoolExecutor.DiscardPolicy());

    private final String identifier;

    private final RejectedExecutionHandler handler;

    private RejectedExecutionType(final String identifier, final RejectedExecutionHandler handler) {
        this.identifier = identifier;
        this.handler = handler;
    }

    public RejectedExecutionHandler getHandler() {
        return handler;
    }

    /**
     * Gets the rejected execution type for given identifier.
     * 
     * @param identifier The identifier
     * @return The rejected execution type for given identifier or <code>null</code>
     */
    public static RejectedExecutionType getRejectedExecutionType(final String identifier) {
        final RejectedExecutionType[] types = RejectedExecutionType.values();
        for (final RejectedExecutionType rejectedExecutionType : types) {
            if (rejectedExecutionType.identifier.equalsIgnoreCase(identifier)) {
                return rejectedExecutionType;
            }
        }
        return null;
    }
}
