This document discusses JNoSQL, a proposed API for NoSQL databases. It describes 5 types of NoSQL databases and examples of each. It proposes JNoSQL as a standardized API with layers for mapping objects to databases and communicating with them. JNoSQL would support the main NoSQL types through individual APIs while providing a common interface. The goals are to avoid vendor lock-in and simplify working with different NoSQL databases.

1. JNoSQL
Daniel Cunha Marcelo Vieira
@dvlc_ @uaicelo
dcunha@tomitribe.com marcelo.vieira@involves.com.br

2. NoSQL
● Database
● Doesn't use structure
● Not Transaction
● BASE
● Five different types

3. Key Value
● AmazonDynamo
● AmazonS3
● Redis
● Scalaris
● Voldemort
● Couchbase
valuekey
valuekey
valuekey

4. Document
● AmazonSimpleD
● ApacheCouchdb
● MongoDb
● Riak
● Couchbase

5. Column
● Hbase
● Cassandra
● Scylla
● Clouddata
● SimpleDb
● DynamoDB
Row-key Columns...
Apollo
Aphrodite
Ares
Sun
Duty
{Love, happy}
Duty
War
Duty
Sword
weapon
Color
Kratos
Dead Gods
13

6. Graph
● Neo4j
● InfoGrid
● Sones
● HyperGraphDB
Apollo Ares
Kratoswas killed by was killed by
Is brother
killed killed

7. Multi-model
● OrientDB
● Couchbase
● Elasticsearch
● Cassandra

8. SQL Key-value Document Column Graph
Table Bucket Collection Column
Family
Vertex and
Edge
Row Key/value
pair
Document Column Vertex
Column Key/value
pair
Key/value
pair
Vertex and
Edge property
Relationship Link Edge

9. Relational Application
DAO
API
API API
Data Tier
Logic Tier
DAO
Logic Tier
Data Tier
JPA
JDBC
JPA
JDBC
JPA
JDBC
NoSQL Application

10. The Current solution
● Spring Data
● Hibernate OGM
● TopLink
DAO
Solution Solution

11. JPA problem for NoSQL
● Saves Async
● Async Callback
● Time to Live (TTL)
● Consistency Level
● SQL based
● Diversity in NoSQL

12. The Challenge
● 4 Types
● Differents goals
● Differents behaviors

13. JNoSQL
● Mapping API
● Communication API
● No lock-in
● Divide and conquer
DAO
Mapping
Communication
Document
Key
Column
Graph
DIANA
ARTEMIS
JNoSQL
Data Tier

14. JNoSQL
● Eclipse Foundation
● Apache + Eclipse License
● API to each NoSQL type
● Configurable
● Extensible
Mapping
Communication DIANA
ARTEMIS

15. Why Diana?
● Goddess of the hunt, nature and
moon
● Fought in Troy
● brave warrior and hunter
● Diana Rome = Artemis Greek

16. Diana
● API Communication layer
● Document, key-value, Column,
Graph
● Standard

17. Communication Issue
ODocument document = new ODocument(“collection”);
document.field(name, value);
Document document = new Document();
document.append(name, value);
JsonObject jsonObject = JsonObject.create();
jsonObject.put(name, value);
BaseDocument baseDocument = new
BaseDocument();
baseDocument.addAttribute(name, value);

18. Communication Issue
ODocument document = new ODocument(“collection”);
document.field(name, value);
Document document = new Document();
document.append(name, value);
JsonObject jsonObject = JsonObject.create();
jsonObject.put(name, value);
BaseDocument baseDocument = new BaseDocument();
baseDocument.addAttribute(name, value);

19. Communication Issue
DocumentEntity entity = DocumentEntity.of("documentCollection");
Document document = Document.of(name, value);
entity.add(document);

20. Issues
● insert vs save
● delete vs remove
● update vs merge
● find vs. search
● callback interface to
asynchronous callback
long to seconds
int to seconds
long to milliseconds
int to milliseconds

21. Diana Project
● Document API
● Graph API
● Key-value API
● Column API
● Four TCKs
Database
API
Implementation
TCK

22. NoSQL Providers

23. JUGs/Communities

24. Road Map
✓ Draft and code Proposal
✓ Community Feedback
✓ Involve NoSQL Vendors
✓ Involve Solution
Vendors
✓ Eclipse Project
✓ Development
✓ JSR

25. JNoSQL
Thank you
Daniel Cunha Marcelo Vieira
@dvlc_ @uaicelo
dcunha@tomitribe.com marcelo.vieira@involves.com.br