plugin to output the file and column titles included

dream/plugins/BatchesOperatorSpreadsheet.py

 from dream.plugins import plugin
+import xlwt
+import StringIO
 
 class BatchesOperatorSpreadsheet(plugin.OutputPreparationPlugin):
-  """ Output the result of demand planning in a format compatible with
-  Output_viewDownloadFile
+  """ Output the schedule of operators in an Excel file to be downloaded
   """
 
   def postprocess(self, data):
-    # XXX the event generator should store its result in data and not in global
-    # variable.
-    print "I'm in"
+    rowIndex=0
+    scheduleFile = xlwt.Workbook() 
+    scheduleSheet = scheduleFile.add_sheet('Operator Schedule', cell_overwrite_ok=True)
+    scheduleSheet.write(rowIndex,0,'Operator')
+    scheduleSheet.write(rowIndex,1,'Machine')
+    scheduleSheet.write(rowIndex,2,'Start Time')
+    scheduleSheet.write(rowIndex,3,'End Time')
     
-#     from dream.simulation.applications.DemandPlanning.Globals import G
-#     data['result']['result_list'][-1][self.configuration_dict['output_id']] = {
-#       'name': 'Result.xlsx',
-#       'mime_type': 'application/vnd.ms-excel',
-#       'data': G.reportResults.xlsx.encode('base64')
-#     }
-#     import json
-#     utilisationString=json.dumps(G.Utilisation, indent=5)
-#     outputJSONFile=open('Utilisation.json', mode='w')
-#     outputJSONFile.write(utilisationString)
+    
+    scheduleStringIO = StringIO.StringIO()
+    scheduleFile.save(scheduleStringIO)
+    encodedScheduleFile=scheduleStringIO.getvalue().encode('base64') 
+    data['result']['result_list'][-1][self.configuration_dict['output_id']] = {
+      'name': 'Operator_Schedule.xls',
+      'mime_type': 'application/vnd.ms-excel',
+      'data': encodedScheduleFile
+    }
     return data