MongoLantern is an open source full text search server using MongoDB as index storage, which allows MongoLantern to migrate any changes very easily into account using MongoDB API. It's written originally written in PHP can be migrated to any desired language as required using it's future APIs.
MongoLantern 0.7 - Stable/Production Release:
1. MongoLantern API support enabled.
2. CSV indexer added as a plugin.
3. node.js API client added.
DruideDB is an embedded database (based on Object/XML mapping files) for Java applications. Both source code (DAO) and persistence layer (mapping) is generated. This DB stores everything as strings and handle auto-increments and multiple PKs.
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data-context is an Java objects container. It can contain any object at any deep, just like map, however, it providers following functions:
1)auto create nesting object when encounter NPE by reflection
2)auto convert data type
3)full xpath syntax