what is the meaning of "Value" class in .proto file

can someone please explain me the meaning of "Value" in below .proto file?

message Test {
string id = 1;
string name = 2;
google.protobuf.Value property = 6;}

1 Answer

Without an import it probably shouldn't work, however: it represents a flexibly typed value; the Value "well known type" is essentially a union (oneof) of a few common types, with the Java API (from your tags) described here.

The definition is in struct.proto (hence you'll need import "google/protobuf/struct.proto";), or basically:

message Value { // The kind of value. oneof kind { // Represents a null value. NullValue null_value = 1; // Represents a double value. double number_value = 2; // Represents a string value. string string_value = 3; // Represents a boolean value. bool bool_value = 4; // Represents a structured value. Struct struct_value = 5; // Represents a repeated `Value`. ListValue list_value = 6; }
}