Initialisation and validation of data contract in AX 2012
In following text you will find sample implementation. Members of this simple data contract are initialised with current date and validated in some manner, and if validation is failed, feedback information is presented to user. Please notice, that spoken logic is limited to context of data contract object only. If it requires broader context we can initialise data contract in controller and validate in operation, but that goes out of scope of this blog entry.
[DataContractAttribute]
class SimpleContract implements SysOperationInitializable, SysOperationValidatable
{
StartDate startDate;
EndDate endDate;
[DataMemberAttribute]
public StartDate parmStartDate(StartDate _startDate = startDate)
{
startDate = _startDate;
return startDate;
}
[DataMemberAttribute]
public EndDate parmEndDate(EndDate _endDate = endDate)
{
endDate = _endDate;
return endDate;
}
public void initialise()
{
startDate = systemDateGet();
endDate = startDate;
}
public boolean validate()
{
if (endDate < startDate)
{
return checkFailed("End date must be greater or equal to start date.");
}
return true;
}
}
class SimpleService
{
public void run(SimpleContract _contract)
{
info(strFmt("Date range: %1 - %2", _contract.parmStartDate(), _contract.parmEndDate()));
}
}
class SimpleController extends SysOperationServiceController
{
public static void main(Args args)
{
SimpleController controller;
controller = new SimpleController();
controller.parmClassName(classStr(SimpleService));
controller.parmMethodName(methodStr(SimpleService, run));
controller.startOperation();
}
}
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