Take a look at Retroweaver (http://retroweaver.sourceforge.net/).
It compiles Java 5 source to JRE 1.4 classes. I remember there being several
open-source tools like this but I could not find them with a quick search.
I have not used this myself but have plans to integrate it into
my build scripts.
--Faron.
From: rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mark Proctor
Sent: Monday, February 02, 2009 12:23 PM
To: Rules Users List
Subject: Re: [rules-users] Drools 5 m4 in IRAD/Websphere
kfs2@chryslerfinancial.com
wrote:
Our application
is stuck with Websphere 6/jdk 1.4. I want to use Guvnor for our rule
management as we have business users editing rules. Would it be possible
to use drools 4.0.7 compiler in the application which would read the rules from
guvnor as source instead of compiled ? I realize that we would have to
avoid rule semantics that are new in drools 5. Could that work or are we
asking for trouble ?
It won't work out of the box. Given enough time and
resources you could probably make it work.
My fallback
option is to stand up a jboss server as a rules server and make requests to it
via webservice calls. But I was hoping to have tighter integration
between our application and the rules engine.
Thanks for any
input.
FYI: we trying
to migrate away from our Pega rules engine to drools and I have found drools to
be very refreshing in a number of ways. Thanks for your excellent work.
|
Mark
Proctor <mproctor@codehaus.org> 01/23/2009
10:33 AM
|
|
kfs2@chryslerfinancial.com
wrote:
I've read that Drools is compatible with jdk 1.4 but I get the error below in
IRAD 6 which is jdk version:
java version "1.4.2"
Drools 4 is JDK1.4 compatible, Drools 5.0 is JDK1.5+ we do not have plans to
backport.
Java(TM) 2
Runtime Environment, Standard Edition (build 1.4.2)
Classic VM (build 1.4.2, J2RE 1.4.2 IBM Windows 32 build cn142ifx-20060307
(142S
R4-1 + 98226) (JIT enabled: jitc))
I searched the archives but could not find anything about this. Any
suggestions would be appreciated.
The java class could not be loaded. java.lang.UnsupportedClassVersionError:
org/drools/event/KnowledgeRuntimeEventManager (Unsupported major.minor version
49.0)
Thanks
Kent
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