Interface SubfieldSettings

SubfieldSettings describes overrides for some settings for subfields of a field. Overrides are applied to fields in order of appearance, so the first matching override is applied, and the rest are ignored.

Example:

message MyMessage {
  string field1 = 1;
}
message MyMessage2 {
  MyMessage field2 = 1 [(subfield_settings) = { field_path: "field1", is_required: true }];
}
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In this example, field1 in MyMessage2 is required, even if it is not required in MyMessage. The following example will override the setting again:

service MyService {
  rpc MyMethod(MyMessage2) returns (MyMessage2) {
    option (method_behavior) = METHOD_UPDATER;
    option (request_fields) = { field_path: "field2.field1", is_required: false };
  }
}
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In this example, field1 in MyMessage2 is not required for the MyMethod, even if it is required in MyMessage2.