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     */
017    package org.apache.activemq.broker.region.policy;
018    
019    import org.apache.activemq.broker.region.MessageReference;
020    import org.apache.activemq.broker.region.Subscription;
021    
022    /**
023     * Determines if a subscription can dispatch a message reference
024     *
025     */
026    public interface DispatchSelector {
027       
028       
029        /**
030         * return true if a subscription can dispatch a message reference
031         * @param subscription
032         * @param node
033         * @return true if can dispatch
034         * @throws Exception 
035         */
036        
037        boolean canDispatch(Subscription subscription, MessageReference node) throws Exception;
038    }