tree 4950a930e5dcde91e7e95feebd950c819dbebdfe
parent 40388c4f5ba1cf8258a7ee257fe91855e77f0a1a
author Murtadha Hubail <mhubail@apache.org> 1531641347 +0300
committer Murtadha Hubail <mhubail@apache.org> 1531689668 -0700

[ASTERIXDB-1130][STO]: JSON serialization for persisted objects

- user model changes: no

- storage format changes:
This change replaces the use of Java serialization for persisted objects
such as dataset/index metadata, checkpoints, ect...
This will break backward compatibly with any existing AsterixDB instance.
However, the change is needed to enable future backward compatibility support
for persisted objects.

- interface changes:
IJsonSerializable: contains API to serialize a class as a JsonNode.
IPersistedResourceRegistry: contains a mapping between an IJsonSerializable
class and a unique type id. An IPersistedResourceRegistry is responsible
for generating the class identifier in the JSON output.
The class identifier will always contain the following attributes:
@type: a unique type id that identifies the object type.
@version: the version of the serialized class.
@class: the serialized class full name.

Any registered class with PersistedResourceRegistry must provide
a static fromJson(IPersistedResourceRegistry, JsonNode) method for
deserialization. This is ensured during the class registration process.

Change-Id: I5b103e06eab6627dbfe9d531caae1a3ac4b296da
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2752
Reviewed-by: Murtadha Hubail <mhubail@apache.org>
Integration-Tests: Murtadha Hubail <mhubail@apache.org>
Tested-by: Murtadha Hubail <mhubail@apache.org>
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: abdullah alamoudi <bamousaa@gmail.com>