When in Rome, do as the Romans do - Part III
In Delphi, properties can be backed by simple fields, but they can also have getter and setter functions that can be vital to the proper functioning of a class. They can contain additional initialization code, protect the consistency of the object's data, prevent invalid input... Photo: Gary Todd from Xinzheng, China, PDM-owner, via Wikimedia Commons, https://commons.wikimedia.org/wiki/File:Colosseum_(48412957912).jpg As you might guess, field-based serialization does not call the appropriate getters and setters, and can cause runtime malfunctions. On the other hand, property-based serialization calls getters and setters if any exist. This is another thing to consider when using REST.Json , which uses field serialization instead of property serialization. REST.JSON ignores property setters https://quality.embarcadero.com/browse/RSP-26262
