Thanks a lot!! Yes, a.getempDAOTarget() is returning null!!! Now I
corrected it. Actually, I haven't properly wired the bean in spring
configuration xml.
On 2/21/07, Edson Tirelli <[EMAIL PROTECTED]> wrote:
Niyas,
Seems that a.getempDAOTarget() is returning null. Can you check if
your bean has this propertie correctly set?
[]s
Edson
Niyas wrote:
> I am trying to use Drools with Spring-Hibernate. I don't know whether
> it's a proper way of using Drools with Spring and Hibernate.
> I am having the MVC application in Spring. This MVC application is
> having the form for adding the employee id and employee name. I have a
> bean for Employee. And EmployeeContoller using SimpleFormController in
> Spring. And I am having the DAO Interface with two methods
> addEmp(Employee e) and displayEmp(empid) and the implementation for
> this interface in Hibernate.
>
> What I am trying to do is, I am checking a conditon in .drl file, if
> it satisfies the condition in the then part I need to save the
> employee bean into database.
>
> My DRL:
> package com.example;
>
> import com.example.EmployeeBean;
>
> rule "My First Rule"
> when
> a:EmployeeBean(empName == "Andrew")
> then
> System.out.println("Hi Andrew -- My First Rule is Fired
> Successfully!!");
> a.getempDAOTarget().addEmp(a);
> end
>
>
> But I am getting the following error:
>
> It's Endowment Policy -- My First Rule is Fired Successfully!!
> java.lang.NullPointerException
> at
> com.example.Rule_My_First_Rule_0.consequence(Rule_My_First_Rule_0.java:9)
> at
>
com.example.Rule_My_First_Rule_0ConsequenceInvoker.evaluate(Rule_My_First_Rule_0ConsequenceInvoker.java:22)
>
> at org.drools.common.DefaultAgenda.fireActivation(Unknown Source)
> at org.drools.common.DefaultAgenda.fireNextItem(Unknown Source)
> at org.drools.common.AbstractWorkingMemory.fireAllRules(Unknown
> Source)
> at org.drools.common.AbstractWorkingMemory.fireAllRules(Unknown
> Source)
> at com.example.PolicyController.onSubmit(PolicyController.java:41)
> at
>
org.springframework.web.servlet.mvc.SimpleFormController.onSubmit(SimpleFormController.java:356)
>
> at
>
org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:258)
>
> at
>
org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:249)
>
> at
>
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
>
> at
>
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:44)
>
> at
>
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:723)
>
> at
>
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:663)
>
> at
>
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:394)
>
> at
>
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:358)
>
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at
>
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
>
> at
>
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
>
> at
>
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
>
> at
>
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
>
> at
>
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
>
> at
>
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
>
> at
>
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
>
> at
>
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
>
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
>
> at
>
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
>
> at
>
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
>
> at
>
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
>
> at
>
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
>
> at java.lang.Thread.run(Thread.java:595)
>
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>
>
--
Edson Tirelli
Software Engineer - JBoss Rules Core Developer
Office: +55 11 3124-6000
Mobile: +55 11 9218-4151
JBoss, a division of Red Hat @ www.jboss.com
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