Performance improvement for GET workflow-instances REST API.

Added "priority" and "dueDate" to WorkflowInstance object, which means a query for the workflow start task is no longer required to retrieve this information. A query was previously being done for every row in the results.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@22210 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/workflow/jbpm/JBPMEngine.java

@@ -2898,6 +2898,8 @@ public class JBPMEngine extends BPMEngine
         WorkflowInstance workflowInstance = new WorkflowInstance();
         workflowInstance.id = createGlobalId(new Long(instance.getId()).toString());
         workflowInstance.description = (String)instance.getContextInstance().getVariable(mapQNameToName(WorkflowModel.PROP_WORKFLOW_DESCRIPTION));
+        workflowInstance.priority = (Integer)instance.getContextInstance().getVariable(mapQNameToName(WorkflowModel.PROP_WORKFLOW_PRIORITY));
+        workflowInstance.dueDate = (Date)instance.getContextInstance().getVariable(mapQNameToName(WorkflowModel.PROP_WORKFLOW_DUE_DATE));
         workflowInstance.definition = createWorkflowDefinition(instance.getProcessDefinition());
         workflowInstance.active = !instance.hasEnded();
         JBPMNode initiator = (JBPMNode)instance.getContextInstance().getVariable("initiator");

source/java/org/alfresco/service/cmr/workflow/WorkflowInstance.java

@@ -47,9 +47,15 @@ public class WorkflowInstance implements Serializable
     /** Initiator (cm:person) - null if System initiated */
     public NodeRef initiator;
     
+    /** Workflow priority */
+    public Integer priority;
+    
     /** Workflow Start Date */
     public Date startDate;
     
+    /** Workflow Due Date */
+    public Date dueDate;
+    
     /** Workflow End Date */
     public Date endDate;
 
@@ -102,6 +108,14 @@ public class WorkflowInstance implements Serializable
         return initiator;
     }
 
+    /**
+     * @return the priority, null if there is no priority set
+     */
+    public Integer getPriority()
+    {
+        return this.priority;
+    }
+
     /**
      * @return the startDate
      */
@@ -109,6 +123,14 @@ public class WorkflowInstance implements Serializable
     {
         return startDate;
     }
+    
+    /**
+     * @return the dueDate
+     */
+    public Date getDueDate()
+    {
+        return dueDate;
+    }
 
     /**
      * @return the endDate