001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.component.seda;
018
019import java.util.Comparator;
020
021import java.util.concurrent.PriorityBlockingQueue;
022
023/**
024 * Implementation of {@link BlockingQueueFactory} producing {@link java.util.concurrent.PriorityBlockingQueue}
025 */
026public class PriorityBlockingQueueFactory<E> implements BlockingQueueFactory<E> {
027
028    /**
029     * Comparator used to sort exchanges
030     */
031    private Comparator<E> comparator;
032
033    public Comparator<E> getComparator() {
034        return comparator;
035    }
036
037    public void setComparator(Comparator<E> comparator) {
038        this.comparator = comparator;
039    }
040
041    @Override
042    public PriorityBlockingQueue<E> create() {
043        return comparator == null 
044            ? new PriorityBlockingQueue<E>()
045            // PriorityQueue as a default capacity of 11
046            : new PriorityBlockingQueue<E>(11, comparator);
047    }
048
049    @Override
050    public PriorityBlockingQueue<E> create(int capacity) {
051        return comparator == null
052            ? new PriorityBlockingQueue<E>(capacity)
053            : new PriorityBlockingQueue<E>(capacity, comparator);
054    }
055}