[jboss-user] [jBPM Users] - Hibernate LazyInitializationException

[remiel512]

Hello all,

I have a question in setting Hibernate/jBPM. When I use the api [HistoryTaskInstanceImpl.getHistoryTask], it throws an exception [LazyInitializationException] and shows [could not initialize proxy - no Session]. Anyone knows how to fix it? Really thanks a lot!

=== Environment ==============================
- jBPM Version : 4.1
- Database : oracle
- JDK : 1.6
- Container : which Java version are you using? use 'java -version' to find out
- Configuration : using jbpm.cfg.xml only importing files from the jbpm.jar
   lib itself.
- Libraries : no

=== Process ==================================
<?xml version="1.0" encoding="UTF-8"?>


  
    
  
  <task candidate-users="mike,peter" form="org/jbpm/examples/taskform/verify_request.ftl" g="96,54,178,52" name="verify_request">
    
    
  
  
  


=== API ===================================
past the relevant code snippet that you use to invoke jBPM

=== Stacktrace ==============================
Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:498)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	com.gaia.jbpm.action.GetActiveNodeInfo.execute(GetActiveNodeInfo.java:56)
	com.gaia.jbpm.action.GetActiveNodeInfo.doGet(GetActiveNodeInfo.java:33)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause

org.hibernate.LazyInitializationException: could not initialize proxy - no Session
	org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:86)
	org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:140)
	org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:190)
	org.jbpm.pvm.internal.history.model.HistoryTaskImpl_$$_javassist_18.getId(HistoryTaskImpl_$$_javassist_18.java)
	org.apache.jsp.st_005fview_jsp._jspService(st_005fview_jsp.java:162)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	com.gaia.jbpm.action.GetActiveNodeInfo.execute(GetActiveNodeInfo.java:56)
	com.gaia.jbpm.action.GetActiveNodeInfo.doGet(GetActiveNodeInfo.java:33)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)


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