[JBoss Seam] - NPE in BusinessProcessContext
by talekar
Hi,
I have a simple process:
<process-definition name="SimpleWorkflow">
| <start-state name="start">
| <transition to="end"></transition>
| </start-state>
|
| <end-state name="end"></end-state>
| </process-definition>
This is started from the following stateful bean:
@Stateful
| @Name("SimpleWorkflowManager")
| public class SimpleWorkflowManagerImpl implements SimpleWorkflowManager, Serializable {
|
| private static final long serialVersionUID = 1L;
|
| @Logger
| private static Log LOG;
|
| @PersistenceContext(type = PersistenceContextType.EXTENDED)
| private EntityManager entityManager;
|
| @CreateProcess(definition = "SimpleWorkflow")
| public void begin() {
| LOG.debug("begin");
| LOG.debug("end");
| }
|
| @Remove
| @Destroy
| public void destroy() {
| }
| }
Called from the following page:
!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
| "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
| <ui:composition xmlns="http://www.w3.org/1999/xhtml"
| xmlns:s="http://jboss.com/products/seam/taglib"
| xmlns:ui="http://java.sun.com/jsf/facelets"
| xmlns:f="http://java.sun.com/jsf/core"
| xmlns:h="http://java.sun.com/jsf/html"
| xmlns:rich="http://richfaces.ajax4jsf.org/rich"
| template="../layout/template.xhtml">
| <ui:define name="body">
| <h:messages styleClass="message" />
| <s:link action="#{SimpleWorkflowManager.begin}"
| value="Start Simple Workflow" />
| <f:view>
| <h:form id="list">
| <div>
| <rich:dataTable value="#{taskInstanceList}" var="task">
| <rich:column>
| <f:facet name="header">
| <h:outputText value="Name" />
| </f:facet>
| <h:outputText value="#{task.name}" />
| </rich:column>
| <rich:column>
| <f:facet name="header">
| <h:outputText value="Description" />
| </f:facet>
| <h:outputText value="#{task.description}" />
| </rich:column>
| </rich:dataTable>
| </div>
| </h:form>
| </f:view>
| </ui:define>
| </ui:composition>
|
And I get the following error after clicking the link:
21:17:55,957 ERROR [SeamPhaseListener.afterPhase] uncaught exception
| java.lang.NullPointerException
| at org.jboss.seam.contexts.BusinessProcessContext.getNamesFromContext(BusinessProcessContext.java:109)
| at org.jboss.seam.contexts.BusinessProcessContext.getNames(BusinessProcessContext.java:92)
| at org.jboss.seam.contexts.Contexts.destroy(Contexts.java:220)
| at org.jboss.seam.contexts.Lifecycle.flushAndDestroyContexts(Lifecycle.java:404)
| at org.jboss.seam.contexts.Lifecycle.endRequest(Lifecycle.java:315)
| at org.jboss.seam.jsf.AbstractSeamPhaseListener.afterRender(AbstractSeamPhaseListener.java:256)
| at org.jboss.seam.jsf.SeamPhaseListener.afterPhase(SeamPhaseListener.java:115)
| at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:89)
| at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:391)
| at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
| at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
| at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
| at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
| at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
| at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
| at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
| at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
| at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
| at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
| at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
| at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
| at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
| at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
| at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
| at java.lang.Thread.run(Thread.java:619)
| 21:17:55,958 ERROR [SeamPhaseListener.afterPhase] swallowing exception
| java.lang.NullPointerException
| at org.jboss.seam.contexts.BusinessProcessContext.getNamesFromContext(BusinessProcessContext.java:109)
| at org.jboss.seam.contexts.BusinessProcessContext.getNames(BusinessProcessContext.java:92)
| at org.jboss.seam.contexts.Contexts.destroy(Contexts.java:220)
| at org.jboss.seam.contexts.Lifecycle.flushAndDestroyContexts(Lifecycle.java:404)
| at org.jboss.seam.contexts.Lifecycle.endRequest(Lifecycle.java:315)
| at org.jboss.seam.jsf.AbstractSeamPhaseListener.afterRender(AbstractSeamPhaseListener.java:256)
| at org.jboss.seam.jsf.SeamPhaseListener.afterPhase(SeamPhaseListener.java:115)
| at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:89)
| at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:391)
| at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
| at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
| at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
| at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
| at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
| at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
| at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
| at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
| at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
| at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
| at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
| at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
| at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
| at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
| at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
| at java.lang.Thread.run(Thread.java:619)
Thanks in advance.
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18Â years, 11Â months
[JBoss Seam] - WorkingMemory injected in EJB but not POJO
by X490812
I have an EJB I am using as an event handler. When I inject my JBOSS Rules workingMemory into it, all is well; I have declared it in components.xml. Here is the code:
| @Stateful
| @Name("indexPage")
| @Scope(org.jboss.seam.ScopeType.SESSION)
| public class IndexPageBean implements IndexPage {
|
| @Logger
| private Log log;
|
| @In
| FacesMessages facesMessages;
|
| @In WorkingMemory wmUnderwriting;
| .
| .
| .
|
HOWEVER - what I would like to do INSTEAD is use another seam component and inject the WorkingMemory into it instead of the event handler above. Here is my proposed code
| @Name("UnderwritingService")
| public class UnderwritingService
| {
| //TODO - NOTE - I changed the ant build script to include all .drl files
| // I.E., security.drl is now *.drl
|
| @In
| WorkingMemory wmUnderwriting;
| .
| .
| .
|
The problem I am having is that when I manually instantiate this comopnent from the first comoponent, the workingMemory object is null. I dont understand, because it is NOT nulll whe it is injected into the EJB event handler, but it IS null when injected instead into the service component that I instantiate from the event handler. I am not understnading why injection works for the EJB and not for the pojo service component
View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4066351#4066351
Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4066351
18Â years, 11Â months