Package org.apache.activemq.broker.region.policy

Class OldestMessageWithLowestPriorityEvictionStrategy

java.lang.Object

org.apache.activemq.broker.region.policy.MessageEvictionStrategySupport

org.apache.activemq.broker.region.policy.OldestMessageWithLowestPriorityEvictionStrategy

All Implemented Interfaces:

MessageEvictionStrategy

public class OldestMessageWithLowestPriorityEvictionStrategy
extends MessageEvictionStrategySupport

An eviction strategy which evicts the oldest message with the lowest priority first.

Constructor Summary

Constructors

Constructor	Description
OldestMessageWithLowestPriorityEvictionStrategy()

Method Summary

Modifier and Type	Method	Description
org.apache.activemq.broker.region.MessageReference[]	evictMessages(LinkedList messages)	Find the message reference in the given list with oldest messages at the front and newer messages at the end

Methods inherited from class org.apache.activemq.broker.region.policy.MessageEvictionStrategySupport

getEvictExpiredMessagesHighWatermark, setEvictExpiredMessagesHighWatermark

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

OldestMessageWithLowestPriorityEvictionStrategy

public OldestMessageWithLowestPriorityEvictionStrategy()

Method Details

evictMessages

public org.apache.activemq.broker.region.MessageReference[] evictMessages(LinkedList messages)
                                                                   throws IOException

Description copied from interface: MessageEvictionStrategy

Find the message reference in the given list with oldest messages at the front and newer messages at the end

Returns:

the message that has been evicted.

Throws:

IOException - if an exception occurs such as reading a message content (but should not ever happen as usually all the messages will be in RAM when this method is called).