[jboss-user] [JBoss Seam] - Drools domain specific language files in Seam

[joff]

I've managed to deploy JBoss Rules using Seam quite happily, going along with the docs, but as soon as I try and use a Domain Specific Langage file (.dsl) things come apart:

My components.xml has this:

<component name="myRules"
  |           class="org.jboss.seam.drools.RuleBase">
  |    <property name="ruleFiles">drools/myrules.drl</property>
  | </component>
  | <component name="myWorkingMemory"
  |          class="org.jboss.seam.drools.ManagedWorkingMemory">
  |     <property name="ruleBaseName">myRules</property>
  | </component>

I deploy my application EAR with both files (myrules.drl and myrules.dsl) inside the drools dir, i.e. application.ear/drools/

The myrules.drl defines the DSL thus:
package com.example.myapp
  | 
  | expander myrules.dsl
  | 
  | rule "My Rule"
  | ... etc etc

It works fine in Eclipse, but when I try and use it in my app:
public class MyActionImpl implements MyAction {
  | 
  | @In(create=true)
  | WorkingMemory myWorkingMemory;
  | 
  | public void doAction() {
  | ....
  | myWorkingMemory.assertObject(myObject);
  | myWorkingMemory.fireAllRules();
  | ....
  | }

I get the following exception:
java.lang.IllegalArgumentException: Unable to use expander. Make sure a expander or dsl config is being passed to the parser. [ExpanderResolver was not set].
  | 
  |         at org.drools.lang.RuleParser.expander(Unknown Source)
  | 
  |         at org.drools.lang.RuleParser.prolog(Unknown Source)
  | 
  |         at org.drools.lang.RuleParser.compilation_unit(Unknown Source)
  | 
  |         at org.drools.compiler.DrlParser.compile(Unknown Source)
  | 
  |         at org.drools.compiler.DrlParser.parse(Unknown Source)
  | 
  |         at org.drools.compiler.DrlParser.parse(Unknown Source)
  | 
  |         at org.jboss.seam.drools.RuleBase.compileRuleBase(RuleBase.java:38)
  | 
  |         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 
  |         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 
  |         at java.lang.reflect.Method.invoke(Method.java:585)
  | 
  |         at org.jboss.seam.util.Reflections.invoke(Reflections.java:16)
  | 
  |         at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:35)
  | 
  |         at org.jboss.seam.Component.callComponentMethod(Component.java:1418)
  | 
  |         at org.jboss.seam.Component.callCreateMethod(Component.java:1406)
  | 
  |         at org.jboss.seam.Component.newInstance(Component.java:1396)
  | 
  |         at org.jboss.seam.Component.getInstance(Component.java:1311)
  | 
  |         at org.jboss.seam.Component.getInstance(Component.java:1294)
etc

Do I need to be including the .dsl file somehow in the components.xml ? Or does this just not work at this stage?


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