Using datomic with 2.1.0.

immutant · Sep 9, 2015 · 71d044e · 71d044e
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+---
+title: Using Datomic With Immutant Redux
+author: The Immutant Team
+layout: news
+tags: [ datomic, messaging ]
+---
+
+A month ago, we [covered] how to use [Datomic] with Immutant. Now that
+Immutant 2.1.0 has been [released], the process of using Immutant
+messaging and Datomic in the same application is a bit simpler, so
+we're covering just that here.
+
+With Immutant 2.1.0, `org.immutant/messaging` can now work with the
+HornetQ 2.3.x brought in by Datomic, you just have to have the proper
+dependency inclusions/exclusions for it to work. The minimum to get
+this working is:
+
+<pre class="syntax clojure">
+:dependencies [[org.immutant/immutant "2.1.0"]
+               ;; Datomic transitively brings in HornetQ 2.3.17.Final, which
+               ;; overrides the HornetQ 2.4.5.Final from org.immutant/messaging
+               [com.datomic/datomic-pro "0.9.5206"]
+               ;; org.immutant/messaging requires this, but Datomic doesn't
+               ;; bring it in, so we have to depend on it explicitly
+               [org.hornetq/hornetq-jms-server "2.3.17.Final"
+                :exclusions [org.jboss.jbossts.jts/jbossjts-jacorb]]]
+</pre>
+
+But doing just that leads to lots of warnings in Leiningen's pedantic
+report. Both Datomic and Immutant have large dependency trees, so
+conflicts are inevitable. If you want to get rid of those warnings,
+we've figured that out for you as well:
+
+<pre class="syntax clojure">
+:dependencies [[org.immutant/immutant "2.1.0"
+                :exclusions [org.hornetq/hornetq-server
+                             org.hornetq/hornetq-jms-server
+                             org.hornetq/hornetq-journal
+                             org.hornetq/hornetq-commons]]
+               [com.datomic/datomic-pro "0.9.5206"
+                :exclusions [org.slf4j/slf4j-nop
+                             joda-time
+                             commons-codec
+                             org.jboss.logging/jboss-logging]]
+               [org.hornetq/hornetq-jms-server "2.3.17.Final"
+                :exclusions [org.jboss.spec.javax.transaction/jboss-transaction-api_1.1_spec
+                             org.jboss.logging/jboss-logging
+                             org.jboss/jboss-transaction-spi
+                             org.jgroups/jgroups
+                             org.jboss.jbossts.jts/jbossjts-jacorb]]]
+</pre>
+
+## Get In Touch
+
+If you have any questions, issues, or other feedback about Datomic
+with Immutant, you can always find us on
+[#immutant on freenode](/community/) or
+[our mailing lists](/community/mailing_lists).
+
+[covered]: /news/2015/08/03/datomic/
+[Datomic]: http://www.datomic.com/
+[HornetQ]: http://hornetq.org
+[released]: /news/2015/09/01/announcing-2-1-0/