10 Replies Latest reply on Oct 26, 2017 8:41 AM by bmkrish

How to decide what page to redirect with JBPM

uesker Aug 30, 2010 2:28 PM

Hi!
In my app, I have a taskInstanceList and a link for execute each task avaliable. However, before start a task, I have to discover to what xhtml page I have to redirect. So, i used the strategy described bellow

<rich:dataTable value="#{taskInstanceList}" var="_task" rendered="#{taskInstanceList != null}">
                        <rich:column>
                                <f:facet name="header">#{messages['task.name']}</f:facet>
                                #{_task.name}
                        </rich:column>
                        <rich:column>
                                <f:facet name="header">#{messages['task.description']}</f:facet>
                                #{_task.description}
                        </rich:column>
                        <rich:column>
                                <f:facet name="header">#{messages['task.date']}</f:facet>
                                <h:outputText value="#{_task.create}">
                                        <f:convertDateTime pattern="dd/MM/yyyy HH:mm"/>
                                </h:outputText>
                        </rich:column>
                        <rich:column>
                                <s:link action="#{pageDecisionHandler.redirectToPage(_task.id)}" taskInstance="#{_task}"                       value="#{messages['task.execute']}"/>
                        </rich:column>
                </rich:dataTable>

And In the pageDecisionHandler component I have

@Name("pageDecisionHandler")
public class PageDecisionHandler {
        
        @In
        private JbpmContext jbpmContext;
        
        public String redirectToPage(int id) {
                TaskInstance taskInstance = jbpmContext.getTaskInstance(id);
                if (taskInstance != null) {
                        jbpmContext.loadTaskInstance(id);
                        String taskName = taskInstance.getName();
                        if (taskName.equalsIgnoreCase("context")) {
                                return "/fillContext.xhtml";
                        } else if (taskName.equalsIgnoreCase("objectivies")) {
                                return "/fillObjectivies.xhtml";
                        }
                }
                
                return null;
        }
}

Finally, on fillContext.page.xml I have a tag start-task

unfortunately, with this code, I cannot have access to taskInstance Id and I can´t redirect to any page.
How can I Solve this?

Cheers

1. Re: How to decide what page to redirect with JBPM

uesker Aug 30, 2010 2:46 PM (in response to uesker)

I forgot to mention that value of parameter Id is 0
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2. Re: How to decide what page to redirect with JBPM

cbensemann Aug 30, 2010 5:31 PM (in response to uesker)

I have used a similar approach when I need to work out which page to redirect to. I have found you don't need to pass in the id and look it up in the jbpmContext though.

You should be able to use an s:link as you have done:

<s:link action="#{pageDecisionHandler.redirectToPage()}" taskInstance="#{_task}" value="#{messages['task.execute']}"/>

Note we are no longer passing in the id into the redirectToPage method.

In your handler bean you would have something like:

@Name("pageDecisionHandler")
public class PageDecisionHandler {
        
        @In(required = false)
        private TaskInstance taskInstance;
        
        @BeginTask
        public String redirectToPage() {
                if (taskInstance != null) {
                        String taskName = taskInstance.getName();
                        if (taskName.equalsIgnoreCase("context")) {
                                return "/fillContext.xhtml";
                        } else if (taskName.equalsIgnoreCase("objectivies")) {
                                return "/fillObjectivies.xhtml";
                        }
                }
                
                return null;
        }
}

3. Re: How to decide what page to redirect with JBPM

uesker Aug 31, 2010 9:05 AM (in response to uesker)

Hi,

I´m appreciate your help!
I tried the example mentioned before, but now i faced with this exception, even with the use of @Begin

Here is the code

@Name("pageDecisionHandler")
@Scope(ScopeType.CONVERSATION)
public class PageDecisionHandler {
     
     @In
     private TaskInstance taskInstance;
     
     @Begin(join=true)
     @BeginTask
     public String redirectToPage() {
          
          if (taskInstance != null) {
               String taskName = taskInstance.getName();
               if (taskName.equalsIgnoreCase("context")) {
                    return "/fillContext.xhtml";
               } else if (taskName.equalsIgnoreCase("objectivies")) {
                    return "/fillObjectivies.xhtml";
               }
          }
          
          return null;
     }
}

And the exception

Exception during request processing:
Caused by javax.el.ELException with message: "java.lang.IllegalStateException: begin method invoked from a long-running conversation, try using @Begin(join=true) on method: redirectToPage"

org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:339)
org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:348)
org.jboss.el.parser.AstPropertySuffix.invoke(AstPropertySuffix.java:58)
org.jboss.el.parser.AstValue.invoke(AstValue.java:96)
org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
org.jboss.seam.core.Expressions$2.invoke(Expressions.java:175)
org.jboss.seam.navigation.Pages.callAction(Pages.java:703)
org.jboss.seam.navigation.Pages.preRender(Pages.java:331)
org.jboss.seam.jsf.SeamPhaseListener.preRenderPage(SeamPhaseListener.java:561)
org.jboss.seam.jsf.SeamPhaseListener.beforeRenderResponse(SeamPhaseListener.java:472)
org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseListener.java:148)
org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:118)
com.sun.faces.lifecycle.Phase.handleBeforePhase(Phase.java:214)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:96)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Unknown Source)

Caused by java.lang.IllegalStateException with message: "begin method invoked from a long-running conversation, try using @Begin(join=true) on method: redirectToPage"

Thanks

4. Re: How to decide what page to redirect with JBPM

cbensemann Aug 31, 2010 6:26 PM (in response to uesker)

Generally speaking you should be able to do as the error message has said. That is to add join=true. Looking at my code that is in fact what I have.
Actions
5. Re: How to decide what page to redirect with JBPM

uesker Sep 2, 2010 11:42 AM (in response to uesker)
Craig Bensemann wrote on Aug 31, 2010 18:26:

Generally speaking you should be able to do as the error message has said. That is to add join=true. Looking at my code that is in fact what I have.

I´m already tried this. I added the begin-conversation tag on page.xml

<page view-id="/listActivities.xhtml"> <begin-conversation join="true"/> </page>

and modified s:link to this

<s:link action="#{pageDecisionHandler.redirectToPage} taskInstance="#{_task}" value="#{messages['task.execute']}" propagation="join"/>

So, when I click on this link I´m redirect to Seam Debug Page. I don´t know if this is important but there is no bussiness process context described on Seam debug page.

Thanks for the help!
Actions

6. Re: How to decide what page to redirect with JBPM

cbensemann Sep 2, 2010 5:19 PM (in response to uesker)

Hi,

Sorry I didn't ready your previous post properly. I see now you already had @Begin(join=true). What you have looks very similar to what I am doing.

Instead of s:link I have

<a4j:commandButton action="#{manageTasksController.action()}"
     value="#{messages[manageTasksController.actionButton(task)]}"
     onclick="this.disabled=true; document.body.style.cursor='wait'"
     oncomplete="this.disabled=false; document.body.style.cursor='auto'" styleClass="long_button">
     <s:taskId value="#{task.id}" />
     <s:conversationPropagation type="none" />
</a4j:commandButton>

I know s:links also work as I was using links previously. Looking at my code I see that I have a conversationPropagation type=none. I cant remember why I put that in there so am not sure if its important.

My manage tasks page (which is equivalent to your listActivities page) I don't use pages.xml to define the begin conversation. Again not sure if this is important but its a difference between our implementations so I thought I would mention it.

pages.xml

    <page view-id="/pages/user/manageTasks.xhtml" login-required="true" scheme="https">
        <navigation from-action="#{pooledTask.assignToCurrentActor}">
            <redirect view-id="/pages/user/manageTasks.xhtml" />
        </navigation>
    </page>

in my manageTasksController bean my action method looks like:

    @BeginTask(flushMode = FlushModeType.MANUAL)
    @Begin(join = true)
    public String action() {
        final String taskType = taskInstance.getName();

        if (Injury.class.getName().equals(className)) {
            return injuryNavigation(taskType);
        }
        else if (Hazard.class.getName().equals(className)) {
            return hazardNavigation(taskType);
        }

        return null;
    }

The flushmode shouldn't be important here. Apart from that I am just using the beginTask annotation and begin annotation the same as you are.

I'm not really sure why yours is not working but hopefully something in the code I have just posted will help you solve your problem

Craig

7. Re: How to decide what page to redirect with JBPM

uesker Sep 3, 2010 2:42 PM (in response to uesker)

I made some modifications and now I´m facing a new exception... :-(

Here is the complete listActivities 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.org/rich"
    xmlns:a4j="http://richfaces.org/a4j"
    template="layout/template.xhtml">

    <ui:define name="body">
         <h:form>
         <a4j:outputPanel id="pooledTasks">
              <h:outputText value="#{messages['listactivities.pooledtasks.message']}"/>
              <h:outputText value="#{messages['srprocess.notasks.messages']}" rendered="#{empty pooledTaskInstanceList}"/>
              <rich:dataTable value="#{pooledTaskInstanceList}" var="task" rendered="#{not empty pooledTaskInstanceList}">
                   <rich:column>
                        <f:facet name="header">#{messages['task.name']}</f:facet>
                        #{task.name}
                   </rich:column>
                   <rich:column>
                        <f:facet name="header">#{messages['task.description']}</f:facet>
                        #{task.description}
                   </rich:column>
                   <rich:column>
                        <f:facet name="header">#{messages['task.date']}</f:facet>
                        <h:outputText value="#{task.create}">
                             <f:convertDateTime pattern="dd/MM/yyyy HH:mm"/>
                        </h:outputText>
                   </rich:column>
                   <rich:column>
                        <s:link action="#{pooledTask.assignToCurrentActor}" value="#{messages['task.assign']}" taskInstance="#{task}" propagation="none">
                             <a4j:support event="onclick" ajaxSingle="true" reRender="pooledTasks, myTasks"/>
                        </s:link>
                   </rich:column>
              </rich:dataTable>
              
              <rich:spacer height="15px"/>
              <rich:separator height="10px"/>
              <rich:spacer height="15px"/>
         </a4j:outputPanel>
         
         <a4j:outputPanel id="myTasks">
              <h:outputText value="#{messages['listactivities.mytasks.message']}"/>
              <h:outputText value="#{messages['srprocess.notasks.messages']}" rendered="#{empty taskInstanceList}"/>
              <rich:dataTable value="#{taskInstanceList}" var="_task" rendered="#{not empty taskInstanceList}">
                   <rich:column>
                        <f:facet name="header">#{messages['task.name']}</f:facet>
                        #{_task.name}
                   </rich:column>
                   <rich:column>
                        <f:facet name="header">#{messages['task.description']}</f:facet>
                        #{_task.description}
                   </rich:column>
                   <rich:column>
                        <f:facet name="header">#{messages['task.date']}</f:facet>
                        <h:outputText value="#{_task.create}">
                             <f:convertDateTime pattern="dd/MM/yyyy HH:mm"/>
                        </h:outputText>
                   </rich:column>
                   <rich:column>
                        <s:link action="#{pageDecisionHandler.redirectToPage}" 
                                taskInstance="#{_task}" 
                                value="#{messages['task.execute']}" />

                   </rich:column>
              </rich:dataTable>
         </a4j:outputPanel>
          </h:form>         
    </ui:define>
</ui:composition>

I removed the following code from pages.xml

<page view-id="/listActivities.xhtml">
     <begin-conversation join="true"/>
 </page>

and now I can debug the redirectToPage() method. However, after execution of method, this exception it´s throw on seam debug page.

Exception during request processing:
Caused by java.lang.NullPointerException with message: ""

org.jboss.seam.bpm.BusinessProcess.startTask(BusinessProcess.java:178)
org.jboss.seam.navigation.TaskControl.beginOrEndTask(TaskControl.java:36)
org.jboss.seam.navigation.Page.preRender(Page.java:290)
org.jboss.seam.navigation.Pages.preRender(Pages.java:351)
org.jboss.seam.jsf.SeamPhaseListener.preRenderPage(SeamPhaseListener.java:561)
org.jboss.seam.jsf.SeamPhaseListener.beforeRenderResponse(SeamPhaseListener.java:472)
org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseListener.java:148)
org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:118)
com.sun.faces.lifecycle.Phase.handleBeforePhase(Phase.java:214)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:96)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Unknown Source)

Here is the code on pages.xml related to fillContext.xhtml

<page view-id="/fillContext.xhtml">
    <begin-conversation join="true"/>
    <start-task/>
 </page>

The fillContext.xhtml is quite simple...

<!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.org/rich"
    template="layout/template.xhtml">

<ui:define name="body">

    <h:form id="fillContextForm">

        <rich:panel>
             <div align="center">
            <f:facet name="header">#{messages['srprocess.fillcontext.page.title']}</f:facet>
               <h:outputText value="#{messages['srprocess.fillcontext.page.description']}"/><br/>
            <rich:editor value="#{srprotocol.context}" width="640" height="480"/>
            <div style="clear:both"/>
            </div>
        </rich:panel>

        <div class="actionButtons">
            <h:commandButton value="#{messages['button.next']}" action="#{contextAction.endFillContext}">
                 <f:param name="taskId" value="#{taskInstance.id}"/>
                 <s:conversationPropagation type="join"/>
            </h:commandButton>
            <s:button propagation="end"
                               id="cancel"
                            value="#{messages['button.cancel']}"
                             view="/listActivities.xhtml"/>
        </div>

    </h:form>

</ui:define>

</ui:composition>

Finnaly, the contextAction component

@Name("contextAction")
@Scope(ScopeType.CONVERSATION)
public class ContextAction {
     
     @In @Out(scope=ScopeType.BUSINESS_PROCESS, required=false)
     protected SRProtocol srprotocol;
     
     @In
     private JbpmContext jbpmContext;
     
     @In
     private Actor actor;
     
     @In
     private StatusMessages statusMessages;
     
     public SRProtocol getSrprotocol() {
          return srprotocol;
     }

     public void setSrprotocol(SRProtocol srprotocol) {
          this.srprotocol = srprotocol;
     }

     @EndTask(transition="context done")
     public String endFillContext() {
          statusMessages.addFromResourceBundle("srprocess.fillcontext.page.sucess");
          return "/fillObjectivies.xhtml";
     }
}

The ideia here is to continue to execute the process and redirect to another page so the user can fill the information related with next task

Please, I´m sorry for any inconvenience but there is no much people on my job to help me with this issue

Thanks a lot!

8. Re: How to decide what page to redirect with JBPM

uesker Sep 3, 2010 3:09 PM (in response to uesker)
Hi!
I have made a modification on pages.xml and now I´m redirect to fillContext.xhtml.

<page view-id="/fillContext.xhtml"> <begin-conversation join="true"/> <start-task taskId="#{taskInstance.id}"/> </page>

But when I click on next button, the problem persists (same expection Exception during request processing:
Caused by java.lang.NullPointerException with message: ).
So I did the same to fillObjectivies on page.xml but did not work. Probably the problem is on endFillContext method.
So, how can I propage taskInstance among the xhtml pages?

Cheers
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9. Re: How to decide what page to redirect with JBPM

cbensemann Sep 6, 2010 1:38 AM (in response to uesker)

Hi,

I'm sorry I'm not sure what the problem is. The fact that you are getting that null pointer suggests that you are not currently in a conversation or that there is no business context active to get the TaskInstance from.

I hope you (or someone else on this forum) is able to sort this out. Feel free to keep posting updates to this thread and I'll help if I can think of anything but right now I'm stumped to see whats wrong.

Craig
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10. Re: How to decide what page to redirect with JBPM

bmkrish Oct 26, 2017 8:41 AM (in response to cbensemann)

Dear Craig,
this is bala from HCL Tech .I am new to JBPM and I trying to do redirect to from the process .I noticed that you have done already .Could you please share me the code which you have done.
Thanks,
Bala
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