svn commit: r957864 [4/6] - in /websites/production/camel/content: book-component-appendix.html book-in-one-page.html cache/main.pageCache camel-2160-release.html eip.html enterprise-integration-patterns.html language.html script.html

Sat, 11 Jul 2015 02:21:14 -0700 

Modified: websites/production/camel/content/eip.html
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--- websites/production/camel/content/eip.html (original)
+++ websites/production/camel/content/eip.html Sat Jul 11 09:20:25 2015
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-<div class="wiki-content maincontent"><h2 
id="EIP-EnterpriseIntegrationPatterns">Enterprise Integration 
Patterns</h2><p>Camel supports most of the <a shape="rect" 
class="external-link" href="http://www.eaipatterns.com/toc.html"; 
rel="nofollow">Enterprise Integration Patterns</a> from the excellent book by 
<a shape="rect" class="external-link" 
href="http://www.amazon.com/exec/obidos/search-handle-url/105-9796798-8100401?%5Fencoding=UTF8&amp;search-type=ss&amp;index=books&amp;field-author=Gregor%20Hohpe";
 rel="nofollow">Gregor Hohpe</a> and <a shape="rect" class="external-link" 
href="http://www.amazon.com/exec/obidos/search-handle-url/105-9796798-8100401?%5Fencoding=UTF8&amp;search-type=ss&amp;index=books&amp;field-author=Bobby%20Woolf";
 rel="nofollow">Bobby Woolf</a>.</p><p>If you are new to Camel you might want 
to try the <a shape="rect" href="getting-started.html">Getting Started</a> in 
the <a shape="rect" href="user-guide.html">User Guide</a> before attempting to 
implement these patt
 erns.</p><p>The EIP icons library is available as a Visio stencil file adapted 
to render the icons with the Camel color : sand. Download it <a shape="rect" 
href="eip.data/Hohpe_EIP_camel_20150622.zip?version=1&amp;modificationDate=1435069070000&amp;api=v2"
 data-linked-resource-id="59211849" data-linked-resource-version="1" 
data-linked-resource-type="attachment" 
data-linked-resource-default-alias="Hohpe_EIP_camel_20150622.zip" 
data-nice-type="Zip Archive" 
data-linked-resource-content-type="application/zip" 
data-linked-resource-container-id="49204" 
data-linked-resource-container-version="79">here</a> for your presentation, 
functional and technical analysis documents. The original EIP stencil is also 
available in <a shape="rect" 
href="eip.data/Hohpe_EIP_camel_OpenOffice.zip?version=1&amp;modificationDate=1245056975000&amp;api=v2"
 data-linked-resource-id="10920" data-linked-resource-version="1" 
data-linked-resource-type="attachment" 
data-linked-resource-default-alias="Hohpe_EIP_camel_Op
 enOffice.zip" data-nice-type="Zip Archive" 
data-linked-resource-content-type="application/zip" 
data-linked-resource-container-id="49204" 
data-linked-resource-container-version="79">OpenOffice 3.x Draw</a> (thanks to 
Marco Garbelini) , <a shape="rect" class="external-link" 
href="http://www.eaipatterns.com/download/EIP_Visio_stencil.zip"; 
rel="nofollow">Microsoft Visio</a>, or <a shape="rect" class="external-link" 
href="http://www.graffletopia.com/stencils/137"; 
rel="nofollow">Omnigraffle</a>.</p><h3 id="EIP-MessagingSystems">Messaging 
Systems</h3><div class="table-wrap"><table 
class="confluenceTable"><tbody><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/ChannelIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/ChannelIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" href="message
 -channel.html">Message Channel</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How does one application communicate with another using 
messaging?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessageIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message.html">Message</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can two applications connected by a message channel 
exchange a piece of information?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/PipesAndFiltersIcon.gif"; 
data-image-src="http://w
 ww.eaipatterns.com/img/PipesAndFiltersIcon.gif"></span></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="pipes-and-filters.html">Pipes and Filters</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can we perform complex processing on a 
message while maintaining independence and flexibility?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/ContentBasedRouterIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/ContentBasedRouterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-router.html">Message Router</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can you decouple individual processing 
steps so that messages can be passed to different filters depending on a set of 
conditions?</p></t
 d></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageTranslatorIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessageTranslatorIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-translator.html">Message Translator</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can systems using different data 
formats communicate with each other using messaging?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageEndpointIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessageEndpointIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape=
 "rect" href="message-endpoint.html">Message Endpoint</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How does an application connect 
to a messaging channel to send and receive 
messages?</p></td></tr></tbody></table></div><h3 
id="EIP-MessagingChannels">Messaging Channels</h3><div 
class="table-wrap"><table class="confluenceTable"><tbody><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/PointToPointIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/PointToPointIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="point-to-point-channel.html">Point to Point Channel</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How can the caller be sure that 
exactly one receiver will receive the document or perform the 
call?</p></td></tr><tr><td colspan="1" rowspan
 ="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/PublishSubscribeIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/PublishSubscribeIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="publish-subscribe-channel.html">Publish Subscribe Channel</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How can the sender broadcast an 
event to all interested receivers?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/DeadLetterChannelIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/DeadLetterChannelIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="dead-letter-channel.html">De
 ad Letter Channel</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>What will the messaging system do with a message it 
cannot deliver?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/GuaranteedMessagingIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/GuaranteedMessagingIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="guaranteed-delivery.html">Guaranteed Delivery</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can the sender make sure that a message 
will be delivered, even if the messaging system fails?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" src="http://www.eaipatterns.com/img/Mes
 sageBusIcon.gif" 
data-image-src="http://www.eaipatterns.com/img/MessageBusIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-bus.html">Message Bus</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>What is an architecture that enables separate 
applications to work together, but in a de-coupled fashion such that 
applications can be easily added or removed without affecting the 
others?</p></td></tr></tbody></table></div><h3 
id="EIP-MessageConstruction">Message Construction</h3><div 
class="table-wrap"><table class="confluenceTable"><tbody><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/EventMessageIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/EventMessageIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" hre
 f="event-message.html">Event Message</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can messaging be used to transmit events from one 
application to another?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/RequestReplyIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/RequestReplyIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="request-reply.html">Request Reply</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>When an application sends a message, how can it get a 
response from the receiver?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/CorrelationIdenti
 fierIcon.gif" 
data-image-src="http://www.eaipatterns.com/img/CorrelationIdentifierIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="correlation-identifier.html">Correlation Identifier</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How does a requestor that has 
received a reply know which request this is the reply for?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/ReturnAddressIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/ReturnAddressIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="return-address.html">Return Address</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How does a replier know where to send the 
reply?</p></td></tr></tbody></table></div><h3 id="EIP-MessageRout
 ing">Message Routing</h3><div class="table-wrap"><table 
class="confluenceTable"><tbody><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/ContentBasedRouterIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/ContentBasedRouterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="content-based-router.html">Content Based Router</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How do we handle a situation 
where the implementation of a single logical function (e.g., inventory check) 
is spread across multiple physical systems?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageFilterIcon.gif"; data
 
-image-src="http://www.eaipatterns.com/img/MessageFilterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-filter.html">Message Filter</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can a component avoid receiving 
uninteresting messages?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/DynamicRouterIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/DynamicRouterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="dynamic-router.html">Dynamic Router</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can you avoid the dependency of the 
router on all possible destinations while maintaining its 
efficiency?</p></td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><p
 ><span class="confluence-embedded-file-wrapper"><img 
 >class="confluence-embedded-image confluence-external-resource" 
 >src="http://www.eaipatterns.com/img/RecipientListIcon.gif"; 
 >data-image-src="http://www.eaipatterns.com/img/RecipientListIcon.gif";></span></p></td><td
 > colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
 >href="recipient-list.html">Recipient List</a></p></td><td colspan="1" 
 >rowspan="1" class="confluenceTd"><p>How do we route a message to a list of 
 >(static or dynamically) specified recipients?</p></td></tr><tr><td 
 >colspan="1" rowspan="1" class="confluenceTd"><p><span 
 >class="confluence-embedded-file-wrapper"><img 
 >class="confluence-embedded-image confluence-external-resource" 
 >src="http://www.eaipatterns.com/img/SplitterIcon.gif"; 
 >data-image-src="http://www.eaipatterns.com/img/SplitterIcon.gif";></span></p></td><td
 > colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
 >href="splitter.html">Splitter</a></p></td><td colspan="1" rowspan="1" 
 >class="confluenceTd"
 ><p>How can we process a message if it contains multiple elements, each of 
 >which may have to be processed in a different way?</p></td></tr><tr><td 
 >colspan="1" rowspan="1" class="confluenceTd"><p><span 
 >class="confluence-embedded-file-wrapper"><img 
 >class="confluence-embedded-image confluence-external-resource" 
 >src="http://www.eaipatterns.com/img/AggregatorIcon.gif"; 
 >data-image-src="http://www.eaipatterns.com/img/AggregatorIcon.gif";></span></p></td><td
 > colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
 >href="aggregator2.html">Aggregator</a></p></td><td colspan="1" rowspan="1" 
 >class="confluenceTd"><p>How do we combine the results of individual, but 
 >related messages so that they can be processed as a 
 >whole?</p></td></tr><tr><td colspan="1" rowspan="1" 
 >class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
 >class="confluence-embedded-image confluence-external-resource" 
 >src="http://www.eaipatterns.com/img/ResequencerIcon.gif"; 
 >data-image-src="http://www.eaipa
 tterns.com/img/ResequencerIcon.gif"></span></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="resequencer.html">Resequencer</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can we get a stream of related but out-of-sequence 
messages back into the correct order?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/DistributionAggregateIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/DistributionAggregateIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="composed-message-processor.html">Composed Message 
Processor</a></p></td><td colspan="1" rowspan="1" class="confluenceTd"><p>How 
can you maintain the overall message flow when processing a message consisting 
of multiple elements, each of which may require different 
 processing?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="scatter-gather.html">Scatter-Gather</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do you maintain the overall message 
flow when a message needs to be sent to multiple recipients, each of which may 
send a reply?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/RoutingTableIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/RoutingTableIcon.gif";>
 </span></p></td><td colspan="1" rowspan="1" class="confluenceTd"><p><a 
shape="rect" href="routing-slip.html">Routing Slip</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do we route a message consecutively 
through a series of processing steps when the sequence of steps is not known at 
design-time and may vary for each message?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="throttler.html">Throttler</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I throttle messages to ensure that a specific 
endpoint does not get overloaded, or we don't exceed an agreed 
 SLA with some external service?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="sampling.html">Sampling</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I sample one message out of many in a given 
period to avoid downstream route does not get overloaded?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/atta
 chments/49204/clear.png"></span></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><a shape="rect" 
href="delayer.html">Delayer</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I delay the sending of a 
message?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="load-balancer.html">Load Balancer</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I balance load across a number of 
endpoints?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluen
 ce-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="multicast.html">Multicast</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I route a message to a number of endpoints at 
the same time?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="loop.html">Loop</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I repeat processing a message 
 in a loop?</p></td></tr></tbody></table></div><h3 
id="EIP-MessageTransformation">Message Transformation</h3><div 
class="table-wrap"><table class="confluenceTable"><tbody><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/DataEnricherIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/DataEnricherIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="content-enricher.html">Content Enricher</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do we communicate with another system 
if the message originator does not have all the required data items 
available?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.co
 m/img/ContentFilterIcon.gif" 
data-image-src="http://www.eaipatterns.com/img/ContentFilterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="content-filter.html">Content Filter</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do you simplify dealing with a large 
message, when you are interested only in a few data items?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/StoreInLibraryIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/StoreInLibraryIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="claim-check.html">Claim Check</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can we reduce the data volume of message sent 
across the system without sacrificing information content?<
 /p></td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/NormalizerIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/NormalizerIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="normalizer.html">Normalizer</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How do you process messages that are semantically 
equivalent, but arrive in a different format?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluence
 Td"><p><a shape="rect" href="sort.html">Sort</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can I sort the body of a 
message?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="validate.html">Validate</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I validate a 
message?</p></td></tr></tbody></table></div><h3 
id="EIP-MessagingEndpoints">Messaging Endpoints</h3><div 
class="table-wrap"><table class="confluenceTable"><tbody><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-ima
 ge confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="messaging-mapper.html">Messaging Mapper</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do you move data between domain objects 
and the messaging infrastructure while keeping the two independent of each 
other?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/EventDrivenConsumerIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/EventDrivenConsumerIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="event-driven-consumer.html">Event Driven Consumer</a></p></td>
 <td colspan="1" rowspan="1" class="confluenceTd"><p>How can an application 
automatically consume messages as they become available?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/PollingConsumerIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/PollingConsumerIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="polling-consumer.html">Polling Consumer</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can an application consume a message 
when the application is ready?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/CompetingConsumersIcon.gif"; 
data-image-src="http://www.eaipatt
 erns.com/img/CompetingConsumersIcon.gif"></span></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="competing-consumers.html">Competing Consumers</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can a messaging client process multiple 
messages concurrently?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageDispatcherIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessageDispatcherIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-dispatcher.html">Message Dispatcher</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can multiple consumers on a single 
channel coordinate their message processing?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span class="conf
 luence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageSelectorIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessageSelectorIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="selective-consumer.html">Selective Consumer</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can a message consumer select which 
messages it wishes to receive?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/DurableSubscriptionIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/DurableSubscriptionIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="durable-subscriber.html">Durable Subscriber</a></p></td><td colspan="1" 
rowspan="1
 " class="confluenceTd"><p>How can a subscriber avoid missing messages while 
it's not listening for them?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="idempotent-consumer.html">Idempotent Consumer</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can a message receiver deal with 
duplicate messages?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/TransactionalClientIcon.gif"; 
data-image-src="http://www.eaipatte
 rns.com/img/TransactionalClientIcon.gif"></span></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="transactional-client.html">Transactional Client</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How can a client control its 
transactions with the messaging system?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessagingGatewayIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessagingGatewayIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="messaging-gateway.html">Messaging Gateway</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do you encapsulate access to the 
messaging system from the rest of the application?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span class="
 confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessagingAdapterIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessagingAdapterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="service-activator.html">Service Activator</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can an application design a service to 
be invoked both via various messaging technologies and via non-messaging 
techniques?</p></td></tr></tbody></table></div><h3 
id="EIP-SystemManagement">System Management</h3><div class="table-wrap"><table 
class="confluenceTable"><tbody><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/ControlBusIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/ControlBusIco
 n.gif"></span></p></td><td colspan="1" rowspan="1" class="confluenceTd"><p><a 
shape="rect" href="controlbus.html">ControlBus</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can we effectively administer a 
messaging system that is distributed across multiple platforms and a wide 
geographic area?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/DetourIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/DetourIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="detour.html">Detour</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can you route a message through intermediate steps 
to perform validation, testing or debugging functions?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span class="confluence-embed
 ded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/WireTapIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/WireTapIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="wire-tap.html">Wire Tap</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How do you inspect messages that travel on a 
point-to-point channel?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-history.html">Message History</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How 
 can we effectively analyze and debug the flow of messages in a loosely coupled 
system?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="logeip.html">Log</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I log processing a 
message?</p></td></tr></tbody></table></div></div>
+<div class="wiki-content maincontent"><h2 
id="EIP-EnterpriseIntegrationPatterns">Enterprise Integration 
Patterns</h2><p>Camel supports most of the <a shape="rect" 
class="external-link" href="http://www.eaipatterns.com/toc.html"; 
rel="nofollow">Enterprise Integration Patterns</a> from the excellent book by 
<a shape="rect" class="external-link" 
href="http://www.amazon.com/exec/obidos/search-handle-url/105-9796798-8100401?%5Fencoding=UTF8&amp;search-type=ss&amp;index=books&amp;field-author=Gregor%20Hohpe";
 rel="nofollow">Gregor Hohpe</a> and <a shape="rect" class="external-link" 
href="http://www.amazon.com/exec/obidos/search-handle-url/105-9796798-8100401?%5Fencoding=UTF8&amp;search-type=ss&amp;index=books&amp;field-author=Bobby%20Woolf";
 rel="nofollow">Bobby Woolf</a>.</p><p>If you are new to Camel you might want 
to try the <a shape="rect" href="getting-started.html">Getting Started</a> in 
the <a shape="rect" href="user-guide.html">User Guide</a> before attempting to 
implement these patt
 erns.</p><p>The EIP icons library is available as a Visio stencil file adapted 
to render the icons with the Camel color : sand. Download it <a shape="rect" 
href="eip.data/Hohpe_EIP_camel_20150622.zip?version=1&amp;modificationDate=1435069070000&amp;api=v2"
 data-linked-resource-id="59211849" data-linked-resource-version="1" 
data-linked-resource-type="attachment" 
data-linked-resource-default-alias="Hohpe_EIP_camel_20150622.zip" 
data-nice-type="Zip Archive" 
data-linked-resource-content-type="application/zip" 
data-linked-resource-container-id="49204" 
data-linked-resource-container-version="80">here</a> for your presentation, 
functional and technical analysis documents. The original EIP stencil is also 
available in <a shape="rect" 
href="eip.data/Hohpe_EIP_camel_OpenOffice.zip?version=1&amp;modificationDate=1245056975000&amp;api=v2"
 data-linked-resource-id="10920" data-linked-resource-version="1" 
data-linked-resource-type="attachment" 
data-linked-resource-default-alias="Hohpe_EIP_camel_Op
 enOffice.zip" data-nice-type="Zip Archive" 
data-linked-resource-content-type="application/zip" 
data-linked-resource-container-id="49204" 
data-linked-resource-container-version="80">OpenOffice 3.x Draw</a> (thanks to 
Marco Garbelini) , <a shape="rect" class="external-link" 
href="http://www.eaipatterns.com/download/EIP_Visio_stencil.zip"; 
rel="nofollow">Microsoft Visio</a>, or <a shape="rect" class="external-link" 
href="http://www.graffletopia.com/stencils/137"; 
rel="nofollow">Omnigraffle</a>.</p><h3 id="EIP-MessagingSystems">Messaging 
Systems</h3><div class="table-wrap"><table 
class="confluenceTable"><tbody><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/ChannelIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/ChannelIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" href="message
 -channel.html">Message Channel</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How does one application communicate with another using 
messaging?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessageIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message.html">Message</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can two applications connected by a message channel 
exchange a piece of information?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/PipesAndFiltersIcon.gif"; 
data-image-src="http://w
 ww.eaipatterns.com/img/PipesAndFiltersIcon.gif"></span></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="pipes-and-filters.html">Pipes and Filters</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can we perform complex processing on a 
message while maintaining independence and flexibility?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/ContentBasedRouterIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/ContentBasedRouterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-router.html">Message Router</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can you decouple individual processing 
steps so that messages can be passed to different filters depending on a set of 
conditions?</p></t
 d></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageTranslatorIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessageTranslatorIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-translator.html">Message Translator</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can systems using different data 
formats communicate with each other using messaging?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageEndpointIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessageEndpointIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape=
 "rect" href="message-endpoint.html">Message Endpoint</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How does an application connect 
to a messaging channel to send and receive 
messages?</p></td></tr></tbody></table></div><h3 
id="EIP-MessagingChannels">Messaging Channels</h3><div 
class="table-wrap"><table class="confluenceTable"><tbody><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/PointToPointIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/PointToPointIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="point-to-point-channel.html">Point to Point Channel</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How can the caller be sure that 
exactly one receiver will receive the document or perform the 
call?</p></td></tr><tr><td colspan="1" rowspan
 ="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/PublishSubscribeIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/PublishSubscribeIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="publish-subscribe-channel.html">Publish Subscribe Channel</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How can the sender broadcast an 
event to all interested receivers?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/DeadLetterChannelIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/DeadLetterChannelIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="dead-letter-channel.html">De
 ad Letter Channel</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>What will the messaging system do with a message it 
cannot deliver?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/GuaranteedMessagingIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/GuaranteedMessagingIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="guaranteed-delivery.html">Guaranteed Delivery</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can the sender make sure that a message 
will be delivered, even if the messaging system fails?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" src="http://www.eaipatterns.com/img/Mes
 sageBusIcon.gif" 
data-image-src="http://www.eaipatterns.com/img/MessageBusIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-bus.html">Message Bus</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>What is an architecture that enables separate 
applications to work together, but in a de-coupled fashion such that 
applications can be easily added or removed without affecting the 
others?</p></td></tr></tbody></table></div><h3 
id="EIP-MessageConstruction">Message Construction</h3><div 
class="table-wrap"><table class="confluenceTable"><tbody><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/EventMessageIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/EventMessageIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" hre
 f="event-message.html">Event Message</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can messaging be used to transmit events from one 
application to another?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/RequestReplyIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/RequestReplyIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="request-reply.html">Request Reply</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>When an application sends a message, how can it get a 
response from the receiver?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/CorrelationIdenti
 fierIcon.gif" 
data-image-src="http://www.eaipatterns.com/img/CorrelationIdentifierIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="correlation-identifier.html">Correlation Identifier</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How does a requestor that has 
received a reply know which request this is the reply for?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/ReturnAddressIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/ReturnAddressIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="return-address.html">Return Address</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How does a replier know where to send the 
reply?</p></td></tr></tbody></table></div><h3 id="EIP-MessageRout
 ing">Message Routing</h3><div class="table-wrap"><table 
class="confluenceTable"><tbody><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/ContentBasedRouterIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/ContentBasedRouterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="content-based-router.html">Content Based Router</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How do we handle a situation 
where the implementation of a single logical function (e.g., inventory check) 
is spread across multiple physical systems?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageFilterIcon.gif"; data
 
-image-src="http://www.eaipatterns.com/img/MessageFilterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-filter.html">Message Filter</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can a component avoid receiving 
uninteresting messages?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/DynamicRouterIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/DynamicRouterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="dynamic-router.html">Dynamic Router</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can you avoid the dependency of the 
router on all possible destinations while maintaining its 
efficiency?</p></td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><p
 ><span class="confluence-embedded-file-wrapper"><img 
 >class="confluence-embedded-image confluence-external-resource" 
 >src="http://www.eaipatterns.com/img/RecipientListIcon.gif"; 
 >data-image-src="http://www.eaipatterns.com/img/RecipientListIcon.gif";></span></p></td><td
 > colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
 >href="recipient-list.html">Recipient List</a></p></td><td colspan="1" 
 >rowspan="1" class="confluenceTd"><p>How do we route a message to a list of 
 >(static or dynamically) specified recipients?</p></td></tr><tr><td 
 >colspan="1" rowspan="1" class="confluenceTd"><p><span 
 >class="confluence-embedded-file-wrapper"><img 
 >class="confluence-embedded-image confluence-external-resource" 
 >src="http://www.eaipatterns.com/img/SplitterIcon.gif"; 
 >data-image-src="http://www.eaipatterns.com/img/SplitterIcon.gif";></span></p></td><td
 > colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
 >href="splitter.html">Splitter</a></p></td><td colspan="1" rowspan="1" 
 >class="confluenceTd"
 ><p>How can we process a message if it contains multiple elements, each of 
 >which may have to be processed in a different way?</p></td></tr><tr><td 
 >colspan="1" rowspan="1" class="confluenceTd"><p><span 
 >class="confluence-embedded-file-wrapper"><img 
 >class="confluence-embedded-image confluence-external-resource" 
 >src="http://www.eaipatterns.com/img/AggregatorIcon.gif"; 
 >data-image-src="http://www.eaipatterns.com/img/AggregatorIcon.gif";></span></p></td><td
 > colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
 >href="aggregator2.html">Aggregator</a></p></td><td colspan="1" rowspan="1" 
 >class="confluenceTd"><p>How do we combine the results of individual, but 
 >related messages so that they can be processed as a 
 >whole?</p></td></tr><tr><td colspan="1" rowspan="1" 
 >class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
 >class="confluence-embedded-image confluence-external-resource" 
 >src="http://www.eaipatterns.com/img/ResequencerIcon.gif"; 
 >data-image-src="http://www.eaipa
 tterns.com/img/ResequencerIcon.gif"></span></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="resequencer.html">Resequencer</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can we get a stream of related but out-of-sequence 
messages back into the correct order?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/DistributionAggregateIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/DistributionAggregateIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="composed-message-processor.html">Composed Message 
Processor</a></p></td><td colspan="1" rowspan="1" class="confluenceTd"><p>How 
can you maintain the overall message flow when processing a message consisting 
of multiple elements, each of which may require different 
 processing?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="scatter-gather.html">Scatter-Gather</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do you maintain the overall message 
flow when a message needs to be sent to multiple recipients, each of which may 
send a reply?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/RoutingTableIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/RoutingTableIcon.gif";>
 </span></p></td><td colspan="1" rowspan="1" class="confluenceTd"><p><a 
shape="rect" href="routing-slip.html">Routing Slip</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do we route a message consecutively 
through a series of processing steps when the sequence of steps is not known at 
design-time and may vary for each message?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="throttler.html">Throttler</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I throttle messages to ensure that a specific 
endpoint does not get overloaded, or we don't exceed an agreed 
 SLA with some external service?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="sampling.html">Sampling</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I sample one message out of many in a given 
period to avoid downstream route does not get overloaded?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/atta
 chments/49204/clear.png"></span></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><a shape="rect" 
href="delayer.html">Delayer</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I delay the sending of a 
message?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="load-balancer.html">Load Balancer</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I balance load across a number of 
endpoints?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluen
 ce-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="multicast.html">Multicast</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I route a message to a number of endpoints at 
the same time?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="loop.html">Loop</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I repeat processing a message 
 in a loop?</p></td></tr></tbody></table></div><h3 
id="EIP-MessageTransformation">Message Transformation</h3><div 
class="table-wrap"><table class="confluenceTable"><tbody><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/DataEnricherIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/DataEnricherIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="content-enricher.html">Content Enricher</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do we communicate with another system 
if the message originator does not have all the required data items 
available?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.co
 m/img/ContentFilterIcon.gif" 
data-image-src="http://www.eaipatterns.com/img/ContentFilterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="content-filter.html">Content Filter</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do you simplify dealing with a large 
message, when you are interested only in a few data items?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/StoreInLibraryIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/StoreInLibraryIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="claim-check.html">Claim Check</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can we reduce the data volume of message sent 
across the system without sacrificing information content?<
 /p></td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/NormalizerIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/NormalizerIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="normalizer.html">Normalizer</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How do you process messages that are semantically 
equivalent, but arrive in a different format?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluence
 Td"><p><a shape="rect" href="sort.html">Sort</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can I sort the body of a 
message?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd">&#160;</td><td colspan="1" rowspan="1" 
class="confluenceTd">Script</td><td colspan="1" rowspan="1" 
class="confluenceTd">How do I execute a script which may not change the 
message?</td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="validate.html">Validate</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I validate a 
message?</p></td></tr></tbody></table></div><h3 id="EIP-Me
 ssagingEndpoints">Messaging Endpoints</h3><div class="table-wrap"><table 
class="confluenceTable"><tbody><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="messaging-mapper.html">Messaging Mapper</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How do you move data between domain objects 
and the messaging infrastructure while keeping the two independent of each 
other?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/EventDrivenCons
 umerIcon.gif" 
data-image-src="http://www.eaipatterns.com/img/EventDrivenConsumerIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="event-driven-consumer.html">Event Driven Consumer</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How can an application 
automatically consume messages as they become available?</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/PollingConsumerIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/PollingConsumerIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="polling-consumer.html">Polling Consumer</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can an application consume a message 
when the application is ready?</p></td></tr><tr><td colspan="1" rowspan
 ="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/CompetingConsumersIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/CompetingConsumersIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="competing-consumers.html">Competing Consumers</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can a messaging client process multiple 
messages concurrently?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageDispatcherIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessageDispatcherIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="message-dispatcher.html">Message Dis
 patcher</a></p></td><td colspan="1" rowspan="1" class="confluenceTd"><p>How 
can multiple consumers on a single channel coordinate their message 
processing?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessageSelectorIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessageSelectorIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="selective-consumer.html">Selective Consumer</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can a message consumer select which 
messages it wishes to receive?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/DurableSubscriptionIcon.gif"; data-i
 
mage-src="http://www.eaipatterns.com/img/DurableSubscriptionIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="durable-subscriber.html">Durable Subscriber</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can a subscriber avoid missing messages 
while it's not listening for them?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png"; 
data-image-src="http://cwiki.apache.org/confluence/download/attachments/49204/clear.png";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="idempotent-consumer.html">Idempotent Consumer</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can a message receiver deal with 
duplicate messages?</p></td></tr><tr><td colspan="1" rowspan="
 1" class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/TransactionalClientIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/TransactionalClientIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="transactional-client.html">Transactional Client</a></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>How can a client control its 
transactions with the messaging system?</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p><span 
class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image 
confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessagingGatewayIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessagingGatewayIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="messaging-gateway.html">Messaging 
 Gateway</a></p></td><td colspan="1" rowspan="1" class="confluenceTd"><p>How do 
you encapsulate access to the messaging system from the rest of the 
application?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/MessagingAdapterIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/MessagingAdapterIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="service-activator.html">Service Activator</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can an application design a service to 
be invoked both via various messaging technologies and via non-messaging 
techniques?</p></td></tr></tbody></table></div><h3 
id="EIP-SystemManagement">System Management</h3><div class="table-wrap"><table 
class="confluenceTable"><tbody><tr><td colspan="1" rowspan="1" class="conflu
 enceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/ControlBusIcon.gif"; 
data-image-src="http://www.eaipatterns.com/img/ControlBusIcon.gif";></span></p></td><td
 colspan="1" rowspan="1" class="confluenceTd"><p><a shape="rect" 
href="controlbus.html">ControlBus</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can we effectively administer a messaging system 
that is distributed across multiple platforms and a wide geographic 
area?</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p><span class="confluence-embedded-file-wrapper"><img 
class="confluence-embedded-image confluence-external-resource" 
src="http://www.eaipatterns.com/img/DetourIcon.gif"; 
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href="message-history.html">Message History</a></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>How can we effectively analyze and debug 
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href="logeip.html">Log</a></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>How can I log processing a 
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