Wednesday, July 24, 2013

Playing with controller class

SysOperation framework relies on SysOperationServiceController class for passing the args argument from the menu item to the framework. Overriding some of the methods on this class gives you more control over its functioning. Same way when you want to modify the user interface of a SysOperation service, UI Builder classes are the way to go. Two methods of particular interest to me are:
showQueryValues When a query is used and this method returns true, then the fields with ranges and a Select button will be shown on the dialog. Return false in this method to hide them.
showQuerySelectButton This method does the same as the showQueryValues method, but only affects the Select button.

Some cases we want to create a batchable job, which a user can use but don't want to give him the option to 'select' any particular records or its meaningless to show the query fields on dialog. Overriding the above two methods to return false can solve the purpose.

You will also need to override main and construct methods in this case, like below.

 public static void main(args _args)  
 {  
   MMSPriceUpdatePublishDataController  controller = MMSPriceUpdatePublishDataController::construct();  
   controller.startOperation();  
 }  
 private static MMSPriceUpdatePublishDataController construct(SysOperationExecutionMode _mode = SysOperationExecutionMode::ReliableAsynchronous)  
 {  
   MMSPriceUpdatePublishDataController  controller = new MMSPriceUpdatePublishDataController(classStr(MMSPriceUpdatePublishData),methodStr(MMSPriceUpdatePublishData, run), _mode);  
   return controller;  
 }  
 public boolean showQuerySelectButton(str parameterName)  
 {  
   return false;  
 }  
Also set the Object property on the menu item as the name of your controller class.

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