Added getTaskById(String taskId) to get a single workflow task (req'd by Office Add-In)

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5840 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/template/Workflow.java

@@ -118,6 +118,19 @@ public class Workflow extends BaseTemplateProcessorExtension
         return convertTasks(tasks);
     }
     
+    /**
+     * Return a single object representing a task of the given taskId for the current user
+     * 
+     * @return WorkflowTaskItem bean object {@link WorkflowTaskItem}
+     */
+    public WorkflowTaskItem getTaskById(String taskId)
+    {
+        // get the task corresponding to the given taskId
+        WorkflowTask task = getWorkflowService().getTaskById(taskId);
+        
+        return new WorkflowTaskItem(this.services, getTemplateImageResolver(), task);
+    }
+    
     /**
      * Convert a list of WorkflowTask items into bean objects accessable from templates
      *