11:19 a.m.
I am getting an error when the knowledge agent loads a pkg. The rules source
file contains an import for a class:
com.abclegal.domain.task.FileDocumentsWithCourtTask
and the RHS of a rule makes a cast using the class name without fully
qualifying it:
((FileDocumentsWithCourtTask)$step.getTask()).addDocument($doc);
I see the following error when the package is loaded by knowledge agent:
Error creating bean with name 'workflowKnowledgeAgent': Invocation of init
method failed; nested exception is [Error: unable to resolve method using
strict-mode: java.lang.Object.FileDocumentsWithCourtTask()]
[Near : {... ((FileDocumentsWithCourtTask)$st ....}]
note in the error that the FileDocumentsWithCourtTask is not being resolved
according to the import statement. The really odd thing about this is that
it doesn't get the error all the time. Sometimes the package is loaded
without error.
I can probably resolve this by fully-qualifying the class name within the
RHS, but you are not supposed to have to do that if you put the
fully-qualified name in the import of the rule.
Any clue why this error might happen?
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1:10 p.m.
Got around this error for now by using non-strict mode for mvel. I have seen
inquiries before on this forum about how to set the
drools.dialect.mvel.strict property using Spring config so thought I'd share
my bean definition. One caveat is to make sure the mvel config bean is
created before any drools spring config loads. The config below gets the
system properties, then adds the mvel property to the existing ones.
<bean
class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetObject">
<bean
class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetClass" value="java.lang.System" />
<property name="targetMethod" value="getProperties" />
</bean>
</property>
<property name="targetMethod" value="putAll" />
<property name="arguments">
<props>
<prop key="drools.dialect.mvel.strict">false</prop>
</props>
</property>
</bean>
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1:15 p.m.
Thanks for feeding back your solution.
It's bound to be of help to others who find themselves in a similar position
to yourself.
With kind regards,
Mike
On 1 August 2011 19:10, lhorton <LHorton(a)abclegal.com> wrote:
Got around this error for now by using non-strict mode for mvel. I
have
seen
inquiries before on this forum about how to set the
drools.dialect.mvel.strict property using Spring config so thought I'd
share
my bean definition. One caveat is to make sure the mvel config bean is
created before any drools spring config loads. The config below gets the
system properties, then adds the mvel property to the existing ones.
<bean
class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetObject">
<bean
class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetClass"
value="java.lang.System" />
<property name="targetMethod"
value="getProperties" />
</bean>
</property>
<property name="targetMethod" value="putAll" />
<property name="arguments">
<props>
<prop
key="drools.dialect.mvel.strict">false</prop>
</props>
</property>
</bean>
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Michael Anstis