Need help for jbpm in seam

[sathishavunoori]

Hi to our seam world ,
I want to develop business process management in my seam application using jbpm. But i don't have much  knowledge about Bpm and jbpm.

Can any one help me how should i get knowledge about jbpm and how would i develop processes and tasks and task assignments in my application?

any help......

Thanks in advance
Sathish

[gaborj]

Information is power!

You can check e.g.:
jbpm v4 userguide
but there are also books, like this from Packt:
JBoss jBPM

[sathishavunoori]

hi Gabor Jakab,

very thanks for your great suggestion,

i have created a jpdl file for simple page navigation in ejbmodule like as follows.
my pageflow.jpdl.xml file

<?xml version="1.0"?>
<pageflow-definition  name="gateOperation"  xmlns="http://jboss.com/products/seam/pageflow"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://jboss.com/products/seam/pageflow http://jboss.com/products/seam/pageflow-2.1.xsd">
   
    <start-page name="gateoperation" view-id="/operations/success.xhtml">
         <redirect/>
          <transition  to="evaluateGate">
          </transition>      
   </start-page>
  <decision name="evaluateGate" expression="#{itGateOperationsAction.next}">
    <transition name="persisted" to="win"/>
</decision>
   
     <page name="win" view-id="/operations/failed.xhtml">
        <end-conversation/>
        <redirect/>
    </page>
    
    
    
</pageflow-definition>

and i am starting this pageflow in pages.xml file like this ,

 <page view-id="/operations/success.xhtml">
      <begin-conversation join="true" pageflow="gateOperation"/>
    </page>

this is my success.xhtml 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:a="http://richfaces.org/a4j"
    xmlns:a4j="http://richfaces.org/a4j"
    xmlns:rich="http://richfaces.org/rich"
    xmlns:ws="http://www.wwl.com/jsf"
    template="../layout/template.xhtml">

<ui:define name="body">

<h3>updating successful...........</h3>

<h:form >
<s:link value="Click me" action="#{itGateOperationsAction.next}"/>
</h:form>
 </ui:define>
</ui:composition>
 

and this is my failed.xhtml 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:a="http://richfaces.org/a4j"
    xmlns:a4j="http://richfaces.org/a4j"
    xmlns:rich="http://richfaces.org/rich"
    xmlns:ws="http://www.wwl.com/jsf"
    template="../layout/template.xhtml">

<ui:define name="body">



<h3>displaying  failed....................</h3>

 </ui:define>
</ui:composition>
 

and i have configured pageflow.jpdl.xml file in components.xml file like this

 <bpm:jbpm>
      <bpm:pageflow-definitions>
        <value>pageflow.jpdl.xml</value>
      </bpm:pageflow-definitions>
        
    </bpm:jbpm> 
 

my intention is when i click on the link in success.xhtml page  it will call a method next() it was defined in a session scoped stateful session bean and this method will return a string persisted.
so after returning that string the transition name 'win' will be selected and want to redirect page to failed.xthml .

but this flow was not working.

am i wrong anywhere ?

if so , kindly help me?

thanks for your help .
sathish avunoori