Thank you very Much Jean-Pierre. You're hint was very helpful. I forgot
the possibility of RCP to register some plugin as buddy of the drools
plugin. When I register the plugin using the drools plugin as buddy
everything works fine. Even without setting a classloader.
So once again, thank you :)
GRILLON, Jean Pierre schrieb:
Hi,
You might be interested by "DynamicImport-Package" (MANIFEST.MF) in your drools
plugin, to allow it to dynamically access your classes that are located in another plugin.
These configurations depend a lot on your plugins architecture/dependencies.
Regards,
Jean-Pierre Grillon
-----Message d'origine-----
De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De la part de gurks
Envoyé : mercredi 5 septembre 2007 15:11
À : rules-users@lists.jboss.org
Objet : Re: [rules-users] Usage of Drools in a RCP project
Thanx for your hints but you might have missunderstood something.
All the classes needed from Drools plugin are found and I can initialize the
ruleBase unless I try to add
an import statement for a java class into the DRL file. When the DRL file
gets parsed by Drools I
get this strange exception. Don't know why the class cannot be found. I
assume the class is
loaded by means of reflections in Drools. This means when the class is on
class path it should
also be found or do I forget something important???
Gaurav2007 wrote:
i am also working in same technology i am not able to use service of one
plug-in from another in following cases :
1) export the required package of dependent plug-in,
2) add all the required jars in classpath from runtime tab of mainfest.mf
file of your plugin.
3) in run time configuration of application required plug-in is not
selected.
gurks wrote:
I'm working on a RCP project and now want to integrate Drools. There are
two plugins: CORE and UI.
The initialization of Drools is done in a Manager class in the core
plugin. The same plugin also has a class named Service. This class should
be imported in a DRL-file. The Manager is first called in the UI plugin
but don't think that's the problem. The Drools jars are placed in its own
plugin and the other two plugins are augemnted with the dependency
needed.
When I try to initialize the ruleBase I get the following exception:
org.drools.rule.InvalidRulePackage: Unable to resolve ObjectType
'Service' : [Rule name=Your First Rule, agendaGroup=MAIN, salience=0,
no-loop=false]
Rule Compilation error : [Rule name=Your First Rule, agendaGroup=MAIN,
salience=0, no-loop=false]
at/mcw/jdent/services/core/persistent/Rule_Your_First_Rule_0.java (2:55)
: Only a type can be imported. test.core.persistent.Service resolves to a
package
at/mcw/jdent/services/core/persistent/Rule_Your_First_Rule_0.java
(7:342) : $serviceName cannot be resolved
[EMAIL PROTECTED]
at org.drools.rule.Package.checkValidity(Package.java:408)
at
org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:288)
...
I don't know why Drools does not find my Service class. It's in the same
plugin as the manager and should be visible to it.
Could anybody give me an advice how I can integrate Drools into my RCP
project correctly.
Thanx, gurks
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