com.amazonaws.services.schemaregistry.deserializers.protobuf

Class ProtobufClassName

java.lang.Object

com.amazonaws.services.schemaregistry.deserializers.protobuf.ProtobufClassName

public class ProtobufClassName
extends Object

Constructor Summary

Constructors

Constructor and Description
ProtobufClassName()

Method Summary

Modifier and Type	Method and Description
static String	from(com.google.protobuf.Descriptors.Descriptor messageDescriptor) Derives the Protobuf generated Java class name using the Descriptor.
static String	normalize(String fileDescriptorName) Normalizes the fileDescriptorName to class name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ProtobufClassName

public ProtobufClassName()

Method Detail

from

public static String from(@NonNull
                          com.google.protobuf.Descriptors.Descriptor messageDescriptor)

Derives the Protobuf generated Java class name using the Descriptor. This logic is reverse-engineered from how the Protobuf compiler generates the Java classes. Below method generates the class name from given sample schema, ``` //File name: Sample.proto package foo.bar.com; message abc { message def {} } ``` Class name: `foo.bar.com.Sample$abc$def` Reference: https://github.com/protocolbuffers/protobuf/blob/4e0a1119c0c5cdfe89b54b9d66cb76223f17861a/src/google/protobuf/compiler/java/java_name_resolver.cc#L157

Parameters:

messageDescriptor - Protobuf message descriptor

Returns:

inferred class name.

normalize

public static String normalize(String fileDescriptorName)

Normalizes the fileDescriptorName to class name. Protobuf compiler replaces special characters and camel cases it to generate the class name. Reference: https://github.com/protocolbuffers/protobuf/blob/4e0a1119c0c5cdfe89b54b9d66cb76223f17861a/src/google/protobuf/compiler/java/java_helpers.cc#L159