DataMetaAvro

DataMeta Avro utilities, such as DataMetaDOM source to Avro Schema converter.

References to this gem's:

DESCRIPTION:

See the DataMeta Project.

FEATURES/PROBLEMS:

Avro support:

  • ver 1.8.1 or newer

Since Avro supports limited subset of the DataMetaDOM features, DataMeta's features that are not supported by Avro cause an error during export.

SYNOPSIS:

Avro schema generator

Since DataMeta DOM is superset of Avro data types, tradeoffs are made:

  • The DataMeta datetime is converted to an integral type as described in the Avro Schema Docs
  • The DataMeta aggregate types set, deque, list all converted to Avro arrays.
  • Since Avro allows strings only as map keys, an attempt to convert a DataMeta DOM with a mapping with keys other than string will cause an error.

  • The DataMeta type numeric will cause an error during conversion.

  • Runnables:

    • dataMetaAvroSchemaGen.rb - generate Avro Schemas, one file per class

Usage:

dataMetaAvroSchemaGen.rb <DataMetaDOM source> <Avro Schemas target dir>

REQUIREMENTS:

  • No special requirements

INSTALL:

gem install dataMetaAvro

LICENSE:

Apache v 2.0