9.4.5. Task lists

Several built-in Seam components make it easy to display task lists. The pooledTaskInstanceList is a list of pooled tasks that users may assign to themselves:

<h:dataTable value="#{pooledTaskInstanceList}" var="task">
  <h:column>
    <f:facet name="header">Description</f:facet>
    <h:outputText value="#{task.description}"/>
  </h:column>
  <h:column>
    <s:link action="#{pooledTask.assignToCurrentActor}" 
            value="Assign" taskInstance="#{task}"/>
  </h:column>             
</h:dataTable>

<h:dataTable value="#{pooledTaskInstanceList}" var="task">
  <h:column>
    <f:facet name="header">Description</f:facet>
    <h:outputText value="#{task.description}"/>
  </h:column>
  <h:column>
    <s:link action="#{pooledTask.assignToCurrentActor}" 
            value="Assign" taskInstance="#{task}"/>
  </h:column>             
</h:dataTable>

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Note that instead of <s:link>, we can use a plain JSF <h:commandLink>:

<h:commandLink action="#{pooledTask.assignToCurrentActor}">
  <f:param name="taskId" value="#{task.id}"/>
</h:commandLink>

<h:commandLink action="#{pooledTask.assignToCurrentActor}">
  <f:param name="taskId" value="#{task.id}"/>
</h:commandLink>

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The pooledTask component is a built-in component that simply assigns the task to the current user.

The taskInstanceListForType component includes tasks of a particular type that are assigned to the current user:

<h:dataTable value="#{taskInstanceListForType['todo']}" var="task">
  <h:column>
    <f:facet name="header">Description</f:facet>
    <h:outputText value="#{task.description}"/>
  </h:column>
  <h:column>
    <s:link action="#{todoList.start}" 
            value="Start Work" taskInstance="#{task}"/>
  </h:column>             
</h:dataTable>

<h:dataTable value="#{taskInstanceListForType['todo']}" var="task">
  <h:column>
    <f:facet name="header">Description</f:facet>
    <h:outputText value="#{task.description}"/>
  </h:column>
  <h:column>
    <s:link action="#{todoList.start}" 
            value="Start Work" taskInstance="#{task}"/>
  </h:column>             
</h:dataTable>

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9.4.5. Task lists

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