Summary
Prop method should be used to read property name when de-serializing object properties.
Syntax
function Prop: string; overload;
Return Value
Type: string
Prop method returns de-serializing property name.
Remarks
Prop method calls are only possible while de-serializing object data manually; that is - after NG.Serialization.TDeserializer.BeginObject(string) and before corresponding NG.Serialization.TDeserializer.EndObject method calls. The process of a property de-serialization should include two method calls: first, Prop method should be called read property name, and then, one of the methods which reads property value, should be called. The following methods can be called after Prop method to read property value:
- Value method.
- NG.Serialization.TDeserializer.TryNull method, if property value can be Null.
- NG.Serialization.TDeserializer.BeginObject(string)/NG.Serialization.TDeserializer.EndObject methods, if property value is an object itself.
- NG.Serialization.TDeserializer.BeginArray/NG.Serialization.TDeserializer.EndArray methods, if property value is an array.
Examples
| Delphi |  Copy Code
|
|---|---|
D.BeginObject(objtp);
if objtp <> 'Book' then
raise Exception.Create('Unexpected object type');
book := TBook.Create;
while D.HasNext do
begin
if D.Prop = 'Tittle' then
book.Tittle := D.Value<string>
else if D.Prop = 'Author' then
book.Author := D.Value<string>
else
raise Exception.Create('Unexpected property name');
end;
D.EndObject; | |