Hi Niyas,
This is something I faced yesterday but did not had the time to work
on it yet. Basically, 2 problems:
1. Error message is crap... we need to improve that.
2. It should not be raising any error. The error means you have a String
attribute you are trying to compare using operators like >, <, >=, <=.
Example:
Person( name > 'Edson' )
And I think the above should work but is not working. I will open a
JIRA for that.
Meanwhile, if you need to have such constraint, a workaround is to
use a predicate:
Person( $n : name, ( $n.compareTo( 'Edson' ) > 0 ) )
[]s
Edson
Niyas wrote:
I have tried of using the sample coding given the link given by you:
But i am getting the following error:
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'ruleBase' defined in ServletContext resource
[/WEB-INF/insurance-servlet.xml]: Initialization of bean failed;
nested exception is java.lang.RuntimeException: Operator '40' does not
exist for StringEvaluator
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:403)
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:233)
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:145)
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:277)
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:313)
org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:139)
org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:306)
org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:251)
org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:220)
org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:112)
javax.servlet.GenericServlet.init(GenericServlet.java:211)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:595)
========================================================
My insurance-servlet.xml:
<beans>
<!-- default handlermapping -->
<bean id="beanNameUrlMapping"
class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<bean name="/home.htm" class="com.sample.InsuranceController"
singleton="false">
<property name="ruleBase">
<ref bean="ruleBase"/>
</property>
<property name="insurBean">
<ref bean="insurance"/>
</property>
</bean>
<!-- View Resolver -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<!-- Bean -->
<bean id="insurance" class="com.sample.InsuranceBean"/>
<bean id="ruleBase"
class="com.sample.RuleBaseBeanFactory">
<property name="drlResourceList">
<list>
<value
type="org.springframework.core.io.Resource">classpath:/com/sample/Approval.drl</value>
</list>
</property>
<property name="packageBuilderConfiguration">
<bean
class="org.drools.compiler.PackageBuilderConfiguration">
<property name="javaLanguageLevel"
value="1.5"/>
</bean>
</property>
</bean>
</beans>
On 2/19/07, Olenin, Vladimir (MOH) <Vladimir.Olenin(a)moh.gov.on.ca> wrote:
> Check out 'Spring Modules' subproject - it has a DROOLS integration
> module.
> Haven't used it myself yet, so not sure whether it's
> mature/compatible with
> most recent release.
>
>
https://springmodules.dev.java.net/docs/reference/0.7/html/jsr94.html#d0e570
>
> 9
>
>
https://springmodules.dev.java.net/
>
> Vlad
>
>
> -----Original Message-----
> From: rules-users-bounces(a)lists.jboss.org
> [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Niyas
> Sent: 19 February 2007 09:49
> To: rules-users(a)lists.jboss.org
> Subject: [rules-users] Drools With Spring Framework Problem
>
> Hi all,
>
> I am in need of integrating Drools JBoss Rule Engine with Spring
> Framework.
> I have tried sample rule engine examples in the Drools in the
> standalone with the help od drools IDE for eclipse 3.2.
> And I also tried some example in the Spring Framework,to know how it
> works. I have tried some examples in IOC, MVC and JDBC in the spring
> framework.
>
> Now, I want to use both Drools and Spring Framework in such a way that
> Spring will have the MVC application and it should validate the rules,
> which written in the drools (.drl)
>
> I don't know how to begin with/what are he configuration files needed
> to setup. PLease if anyone have the sample coding on Drools with
> Spring or any other links willl be very useful.
>
> And also, guide me what are the things need to be know for Spring with
> Drools. While I have searched in google, lots of things came up like:
>
> Use JSR94... (which is mentioning to configure RuleServiceProvider,
> RuleRuntime, RuleSet..and others..which seeme to be confusing and not
> clear)
>
> Whether there are any API for drools with spring that DROOLS is
> supporting..like org.drools.spring.metadata.ArgumentMetadataSource. I
> don't find these Drools API section
>
http://labs.jboss.com/file-access/default/members/jbossrules/freezone/docs/3
>
> .0.5/apidocs/index.html
> _______________________________________________
> rules-users mailing list
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>
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>
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>
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--
Edson Tirelli
Software Engineer - JBoss Rules Core Developer
Office: +55 11 3124-6000
Mobile: +55 11 9218-4151
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