All DataType-resolution functionality is now encapsulated in ColumnTypeResolver and all DataType-related methods (getDataType(), getTupleType(), getUserType()) were migrated into ColumnTypeResolver. DataType resolution requires always a converter context to apply registered converters so this concern cannot be handled entirely on the mapping level.
Related to type resolution also schema object derivation (create table/index/user type) functionality was moved from CassandraMappingContext into SchemaFactory as schema object derivation requires the converter registrations.