[JBoss Seam] - SEAM and JBPM
by heitmanm
I have got a problem with jbpm-integration into seam. My application is very close to the dvd-seam sample. It was no problem to create the process but when I try to execute a task of my process-definition I get the message "Task null not found" on my xhtml-page.
Perhaps someone have any idea that can be helpful for me?
I will list some codepieces here for better understanding....
I have assigned a task to a user...
<h:dataTable value="#{pooledTaskInstanceList}"
| var="task"
| styleClass="dvdtable"
| headerClass="dvdtablehead"
| rowClasses="dvdtableodd,dvdtableeven"
| columnClasses="dvdtablecol">
| <h:column>
|
| </h:column>
| <h:column>
| <f:facet name="header">Task</f:facet>
| <h:outputText value="#{task.description}" />
| </h:column>
|
| <h:column>
| <s:link
| action="#{pooledTask.assignToCurrentActor}" taskInstance="#{task}"
| value="Assign"/>
| </h:column>
| </h:dataTable>
|
|
| now you should accept the task on an other xhtml.
<h:dataTable value="#{taskInstanceListForType['approve']}"
| var="task"
| styleClass="dvdtable"
| headerClass="dvdtablehead"
| rowClasses="dvdtableodd,dvdtableeven"
| columnClasses="dvdtablecol">
| <h:column>
| <f:facet name="header">credit Id</f:facet>
| #{task.variables['creditId']}
| </h:column>
|
|
| <h:column>
| <s:link action="#{accept.viewTask}"
| taskInstance="#{task}"
| value="Review"/>
| </h:column>
| </h:dataTable>
|
Here the content of the accept-page.....
<h:form>
| <h:commandButton action="#{accept.reject}"
| value="Reject credit" />
| <h:commandButton action="#{accept.accept}"
| value="Accept Credit" />
| </h:form>
| ....
Using the commandButton lets the message "Task null not found" appear.
Accept-Class
@Stateful
| @Name("accept")
| public class AcceptAction
| implements Accept,
| Serializable
| {
| @In(value="currentUser")
| Admin admin;
|
| @PersistenceContext(type=PersistenceContextType.EXTENDED)
| EntityManager em;
|
| @Out(scope=ScopeType.CONVERSATION)
| Credit credit;
|
| @In
| Long creditId;
|
| @BeginTask
| public String viewTask() {
| .....
| return "accept";
| }
|
| @EndTask(transition="approve")
| public String accept() {
| .....
| return "admin";
| }
|
| @EndTask(transition="reject")
| public String reject() {
| ....
| return "admin";
| }
|
| @Destroy
| @Remove
| public void destroy() {}
| }
Processdefinitions.
<?xml version="1.0"?>
|
| <process-definition name="OrderManagement">
|
| <start-state name="start">
| <transition to="decide"/>
| </start-state>
|
| <decision name="decide" expression="#{orderApproval.howLargeIsOrder}">
| <transition name="large order" to="approval"/>
| <transition name="small order" to="process"/>
| </decision>
|
| <task-node name="approval" end-tasks="true">
| <task name="approve" description="Review order">
| <assignment pooled-actors="reviewers"/>
| </task>
| <transition name="cancel" to="cancelled"/>
| <transition name="approve" to="process"/>
| <transition name="reject" to="cancelled"/>
| </task-node>
|
| <task-node name="process">
| <task name="ship" description="Ship order">
| <assignment pooled-actors="#{shipperAssignment.pooledActors}" />
| </task>
| <transition name="shipped" to="complete">
| <action expression="#{afterShipping.log}"/>
| </transition>
| </task-node>
|
| <end-state name="complete"/>
| <end-state name="cancelled"/>
|
| </process-definition>
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19Â years, 5Â months