THRIFT-253. java: Enhance FieldMetaData

The code generator new creates a static map of field id to metadata for each field, including information like the field TType, class of embedded structs, required/optional/default, etc. Additionally, on loading, generated classes statically register their class and metadata map with the global FieldMetaData map, so you can get the metadata for any TBase-implementing class easily.

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@738708 13f79535-47bb-0310-9956-ffa450edef68
12 files changed