Hi all,
If you were ever curious about using protobuf dynamically (no protoc
compiler) but found that difficult to use, this API may be of interest
(java):
https://github.com/os72/protobuf-dynamic
You can create DynamicSchemas on the fly at runtime, then use them as
factories for regular protobuf DynamicMessages
protobuf-dynamic 0.9 (beta) is now available on Maven Central
Cheers
--Oliver
// Create dynamic schemaDynamicSchema.Builder schemaBuilder =
DynamicSchema.newBuilder();
schemaBuilder.setName("PersonSchemaDynamic.proto");
MessageDefinition msgDef = MessageDefinition.newBuilder("Person") // message
Person
.addField("required", "int32", "id", 1) // required int32 id = 1
.addField("required", "string", "name", 2) // required string name = 2
.addField("optional", "string", "email", 3) // optional string email = 3
.build();
schemaBuilder.addMessageDefinition(msgDef);DynamicSchema schema =
schemaBuilder.build();
// Create dynamic message from schemaDynamicMessage.Builder msgBuilder =
schema.newMessageBuilder("Person");Descriptor msgDesc =
msgBuilder.getDescriptorForType();DynamicMessage msg = msgBuilder
.setField(msgDesc.findFieldByName("id"), 1)
.setField(msgDesc.findFieldByName("name"), "Alan Turing")
.setField(msgDesc.findFieldByName("email"), "a...@sis.gov.uk")
.build();
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