Readonly property of entity and comparison in a query

BIZ TMS Aurelius
1 
  LDocument := FManager.Find<TDocument>
    .Where(Linq['KeyFilename'] = AFile)
    .UniqueResult;

In the code above, why it doesn't work when KeyFilename is a readonly property of the entity TDocument ?

2

Please provide the full mapping of the class and explain what do you mean by "it doesn't work".

3

Hi Wagner,

It is written on the page 164 of the last book of Holger. I haven't tested it yet because i follow this book step by step.

4

It's a calculated property at Delphi class level (through TDocument.GetKeyFilename - pages 84 & 163), so it can't be used as a query filter condition (this is explained on the same page 164) once it doesn't exist at database level.
It's not mapped. Please see the last highlighted sentence on page 82.

1 Like
5

Hi Julio,
thank you for your reply. I will check it in few days because i haven't the book with me.