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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.cxf.workqueue;

import java.util.concurrent.Executor;

public interface WorkQueue extends Executor {
    /**
     * Submits a work item for execution at some time in the future, waiting for up to a 
     * specified amount of time for the item to be accepted.
     * 
     * @param work the workitem to submit for execution.
     * @param timeout the maximum amount of time (in milliseconds) to wait for it to be accepted.
     *
     * @throws RejectedExecutionException if this work item cannot be accepted for execution.
     * @throws NullPointerException if work item is null.
     */
    void execute(Runnable work, long timeout);
    
    /**
     * Schedules a work item for execution at some time in the future.
     * 
     * @param work the task to submit for execution.
     * @param delay the delay before the task is executed
     *
     * @throws RejectedExecutionException if this task cannot be accepted for execution.
     * @throws NullPointerException if task is null.
     */
    void schedule(Runnable work, long delay);
}