org.apache.activemq.broker.region.cursors.QueueDispatchPendingList Maven / Gradle / Ivy
/**
* 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.activemq.broker.region.cursors;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import org.apache.activemq.broker.region.MessageReference;
import org.apache.activemq.broker.region.QueueMessageReference;
import org.apache.activemq.command.MessageId;
/**
* An abstraction that keeps the correct order of messages that need to be dispatched
* to consumers, but also hides the fact that there might be redelivered messages that
* should be dispatched ahead of any other paged in messages.
*
* Direct usage of this class is recommended as you can control when redeliveries need
* to be added vs regular pending messages (the next set of messages that can be dispatched)
*
* Created by ceposta
* -->