[rules-users] Exception when use Human Task

[XiaoMiTang]

I got an exception when using Human Task ,caused by the following code:

===============code===========
EntityManagerFactory emf = Persistence.createEntityManagerFactory("aaaa");
TaskService taskService = new
TaskService(emf,SystemEventListenerFactory.getSystemEventListener());
===============code end=======

the error info in the Eclipse's Console llike this:
===========error info=====
严重: Unsuccessful: create table Notification_EmailNotificationHeader
(Notification_id numeric(19,0) not null, emailHeaders_id numeric(19,0) not
null, mapkey varchar(255) null, primary key (Notification_id, mapkey),
unique (emailHeaders_id))
2010-7-27 16:39:38 org.hibernate.tool.hbm2ddl.SchemaExport create
严重: 无法在表 'Notification_EmailNotificationHeader' 中可为 Null 的列上定义 PRIMARY KEY
约束。
2010-7-27 16:39:38 org.hibernate.tool.hbm2ddl.SchemaExport create
严重: Unsuccessful: alter table Notification_EmailNotificationHeader add
constraint FK92169CC0379F97EA foreign key (emailHeaders_id) references
EmailNotificationHeader
2010-7-27 16:39:38 org.hibernate.tool.hbm2ddl.SchemaExport create
严重: 找不到对象 "Notification_EmailNotificationHeader"，因为它不存在或者您没有所需的权限。
2010-7-27 16:39:38 org.hibernate.tool.hbm2ddl.SchemaExport create
严重: Unsuccessful: alter table Notification_EmailNotificationHeader add
constraint FK92169CC01B1E66DC foreign key (Notification_id) references
Notification
2010-7-27 16:39:38 org.hibernate.tool.hbm2ddl.SchemaExport create
严重: 找不到对象 "Notification_EmailNotificationHeader"，因为它不存在或者您没有所需的权限。
2010-7-27 16:39:38 org.hibernate.tool.hbm2ddl.SchemaExport execute
信息: schema export complete
java.lang.IllegalArgumentException: Named query not found:
UnescalatedDeadlines
	at
org.hibernate.ejb.AbstractEntityManagerImpl.createNamedQuery(AbstractEntityManagerImpl.java:108)
	at org.drools.task.service.TaskService.<init>(TaskService.java:65)
	at org.drools.task.service.TaskService.<init>(TaskService.java:48)
	at com.demo.action.loginController.HumanTask(loginController.java:94)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:174)
	at
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:421)
	at
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:409)
	at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
	at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
	at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
	at
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
	at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
	at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)
=======error info end===============================================

the top error info(chinese text) means that: 
[mapkey] is nullable, it can not be defined as primary key ;

how to slove it? 
Thansks~
-- 
View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Exception-when-use-Human-Task-tp998703p998703.html
Sent from the Drools - User mailing list archive at Nabble.com.