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INT-1101 removed list() and purge() from the PollableChannel interface

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This commit is contained in:
Mark Fisher
2010-04-26 20:06:20 +00:00
parent 4402792abc
commit c139bcf695
4 changed files with 36 additions and 35 deletions
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12
org.springframework.integration/src/main/java/org/springframework/integration/channel/ChannelPurger.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2008 the original author or authors.
* Copyright 2002-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -25,7 +25,7 @@ import org.springframework.util.Assert;
/**
* A utility class for purging {@link Message Messages} from one or more
* {@link PollableChannel PollableChannels}. Any message that does <em>not</em>
* {@link QueueChannel QueueChannels}. Any message that does <em>not</em>
* match the provided {@link MessageSelector} will be removed from the channel.
* If no {@link MessageSelector} is provided, then <em>all</em> messages will be
* cleared from the channel.
@@ -41,16 +41,16 @@ import org.springframework.util.Assert;
*/
public class ChannelPurger {
private final PollableChannel[] channels;
private final QueueChannel[] channels;
private final MessageSelector selector;
public ChannelPurger(PollableChannel ... channels) {
public ChannelPurger(QueueChannel ... channels) {
this(null, channels);
}
public ChannelPurger(MessageSelector selector, PollableChannel ... channels) {
public ChannelPurger(MessageSelector selector, QueueChannel ... channels) {
Assert.notEmpty(channels, "at least one channel is required");
if (channels.length == 1) {
Assert.notNull(channels[0], "channel must not be null");
@@ -62,7 +62,7 @@ public class ChannelPurger {
public final List<Message<?>> purge() {
List<Message<?>> purgedMessages = new ArrayList<Message<?>>();
for (PollableChannel channel : this.channels) {
for (QueueChannel channel : this.channels) {
List<Message<?>> results = (this.selector == null) ?
channel.clear() : channel.purge(this.selector);
if (results != null) {

15
org.springframework.integration/src/main/java/org/springframework/integration/channel/PollableChannel.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2008 the original author or authors.
* Copyright 2002-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -16,11 +16,8 @@
package org.springframework.integration.channel;
import java.util.List;
import org.springframework.integration.core.Message;
import org.springframework.integration.core.MessageChannel;
import org.springframework.integration.selector.MessageSelector;
/**
* @author Mark Fisher
@@ -46,14 +43,4 @@ public interface PollableChannel extends MessageChannel {
*/
Message<?> receive(long timeout);
/**
* Remove all {@link Message Messages} from this channel.
*/
List<Message<?>> clear();
/**
* Remove any {@link Message Messages} that are not accepted by the provided selector.
*/
List<Message<?>> purge(MessageSelector selector);
}

6
org.springframework.integration/src/main/java/org/springframework/integration/channel/QueueChannel.java
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@@ -101,12 +101,18 @@ public class QueueChannel extends AbstractPollableChannel {
}
}
/**
* Remove all {@link Message Messages} from this channel.
*/
public List<Message<?>> clear() {
List<Message<?>> clearedMessages = new ArrayList<Message<?>>();
this.queue.drainTo(clearedMessages);
return clearedMessages;
}
/**
* Remove any {@link Message Messages} that are not accepted by the provided selector.
*/
public List<Message<?>> purge(MessageSelector selector) {
if (selector == null) {
return this.clear();