jargos-developers — Developer mailinglist

[Jargos-developers] Suggestion for extension of the component model of Argos..

[Tom A. J. <taj...@gm...>]

I have a suggestion for a new convention when it comes to adding an icon
representation to a component in Argos.

In the component I've been making I've had the need of a graphical
representation of other components, so I've put a icon.png file in the web
folder of the other components. If a component doesn't have a icon.png, I've
just let my component display a standard image that I have, so no components
are forced to have an icon.

The advantage by putting the icon in the web folder is that it is deployed
in Jetty and can be accessed trough an URL too:
http://localhost:8080/serviceName/icon.png. This makes it very easy to
access :)

So this is my suggestion for a new convention! Think of it!

Tom Arild Jakobsen

Re: [Jargos-developers] Problem med komponent i Argos (Problem with Drools component)

[Dan P. E. <dan...@ho...>]

Hi,
=20
I built your code, deployed it to Argos and invoked the test method in the =
Drools component using Argus. The cause of the error message is:
=20
Caused by: java.lang.NoClassDefFoundError: org/drools/base/ShadowProxy at j=
ava.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.d=
efineClass(Unknown Source) at org.drools.rule.MapBackedClassLoader.fastFind=
Class(MapBackedClassLoader.java:60) at org.drools.rule.MapBackedClassLoader=
.loadClass(MapBackedClassLoader.java:79) at java.lang.ClassLoader.loadClass=
(Unknown Source) at org.drools.reteoo.Rete$ClassObjectTypeConf.loadOrGenera=
teProxy(Rete.java:551) at org.drools.reteoo.Rete$ClassObjectTypeConf.define=
ShadowProxyData(Rete.java:498) at org.drools.reteoo.Rete$ClassObjectTypeCon=
f.<init>(Rete.java:465) at org.drools.reteoo.Rete.assertObject(Rete.java:15=
4) at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:192=
) at org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.jav=
a:71) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemo=
ry.java:886) at org.drools.common.AbstractWorkingMemory.insert(AbstractWork=
ingMemory.java:858) at org.drools.common.AbstractWorkingMemory.insert(Abstr=
actWorkingMemory.java:659) at argos.bangbang.drools.Drools.insertFact(Unkno=
wn Source) at argos.bangbang.drools.Drools.test(Unknown Source) ... 26 more
=20
=20
It is a classloading problem, or rather a bug in Argos. Argos does not set =
a classloader before invoking methods from JMX. I've entered the bug into o=
ur bug tracking system.
=20
A workaround to this problem is to insert the following line:
Thread.currentThread().setContextClassLoader(Drools.class.getClassLoader())=
;
In the method that you are calling from JMX. This will ensure that the corr=
ect classloader is used.
=20
I will of course fix this bug in the next release of Argos.
=20
Dan


Date: Tue, 18 Dec 2007 22:37:28 +0100From: taj...@gm...: jargos-d=
eve...@li...: [Jargos-developers] Problem med kom=
ponent i ArgosHeisann!Jeg har satt opp en komponent med testmetoder.. Hvis =
jeg kj=F8rer den for seg selv fra main metoden funket den fint. Men n=E5r j=
eg putter den i Argos og kallet test() med Argus, s=E5 f=E5r jeg f=F8lgende=
 feilmelding: addRuleBase: Unable to load dialect 'org.drools.rule.builder.=
dialect.mvel.MVELDialectConfiguration:mvel'[16:07:46] [DynamicProxy] Warnin=
g: Unable to invoke test for argos.bangbang.drools.Drools: InvocationTarget=
Exception null=D8nsket output er:Hello WorldGoodbye cruel worldJeg har zipp=
et prosjektet rett fra Eclipse's workspace.Filen finnes p=E5: http://www.nr=
rg.org/Drools.zip Hilsen Tom Arild=20
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Ring venner med PC-til-PC-samtaler - GRATIS
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[Jargos-developers] Problem med komponent i Argos

[Tom A. J. <taj...@gm...>]

Heisann!

Jeg har satt opp en komponent med testmetoder.. Hvis jeg kj=F8rer den for s=
eg
selv fra main metoden funket den fint. Men n=E5r jeg putter den i Argos og
kallet test() med Argus, s=E5 f=E5r jeg f=F8lgende feilmelding:
addRuleBase: Unable to load dialect '
org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration:mvel'
[16:07:46] [DynamicProxy] Warning: Unable to invoke test for
argos.bangbang.drools.Drools: InvocationTargetException null

=D8nsket output er:
Hello World
Goodbye cruel world

Jeg har zippet prosjektet rett fra Eclipse's workspace.
Filen finnes p=E5: http://www.nrrg.org/Drools.zip


Hilsen Tom Arild