Neo4EMF eclipsecon 2013
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NEO4EMF, a Neo4j-based model repository and persistence framework allowing on-demand loading, storage, and unloading of large-scale EMF models. Check us at : https://neo4emf.com Fork us at : https://github.com/neo4emf/Neo4EMF
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Neo4EMF eclipsecon 2013
- 1. Neo4EMF : Big Models made possible Amine BENELALLAM AtlanMod Research Team EclipseCon Europe 2013, Ludwigsburgh, Germany October 31 1
- 2. Context Model Management Model Transformation Model Versionning © AtlanMod - atlanmod-contact@mines-nantes.fr …. 2
- 3. Challenges + solutions Lazy loading On demand loading Save if dirty Effective Backend 3
- 4. Database Market Relational DBs NoSQL DBs Column Document Key/value Graph © AtlanMod - atlanmod-contact@mines-nantes.fr 4
- 5. Graphs & MDD Natural Representation Models as attributed directed graphs Graphs Model Management Tech High performance Advanced graph traversal algorithms © AtlanMod - atlanmod-contact@mines-nantes.fr 5
- 6. Towards Graph DBs to Persist Models © AtlanMod - atlanmod-contact@mines-nantes.fr 6
- 8. Neo4j : Short Introduction Neo4j project started in 2007 in Sweden First Version (1.0) was released in 2010 More than 10 Versions (active Community) Current Version 2.0.0-M06 (MileStone) Labelled nodes Constrained DB 8
- 10. Neo4j Graph DB concepts 10
- 11. Neo4j Graph DB concepts 11
- 12. Neo4j Graph DB concepts 12
- 13. Neo4j Graph DB concepts 13
- 14. Neo4EMF Integration Framework Process Data-Representation What’s new in Neo4EMF Changelog Partitioning Java Ecore codegen 14
- 16. Framework Neo4emfUtils Neo4j NeoJava codeGen ChangeLog Neo4EMF Eclipse Modeling Framework © AtlanMod - atlanmod-contact@mines-nantes.fr 16
- 17. Process Edit/ create Data Check changes Notify get / set Retrieve data Neo4j Resource 17
- 20. Neo4EMF-Object A Neo4EMF-Object is simply a : MinimalEObjectImpl Additional metadata (ID) Notifies changes and access Stores an adapter to capture notifications and store them in the changelog © AtlanMod - atlanmod-contact@mines-nantes.fr 20
- 21. Save : ChangeLog Lightweight entry set that casts and records changes notifications © AtlanMod - atlanmod-contact@mines-nantes.fr 21
- 22. Load : Partitioning Two kinds of partitions Flat partitions (to gather elements of the same type) Tailed partitions (to hold references to other objects) Partitions might be flexible Static/Dynamic Partitioning Full-Load © AtlanMod - atlanmod-contact@mines-nantes.fr 22
- 23. Unload : Access History The Unloader uses the data access history recorder to unload partitions Unloading strategies : LIFO, FIFO Least recently used Least frequenty used © AtlanMod - atlanmod-contact@mines-nantes.fr 23
- 24. NeoJava Codegen Adapted codegen templates for : Refined on-demand loading Data access notification Costimized AdapterFactory to cast notifications and store them in the changelog Separated objects and data © AtlanMod - atlanmod-contact@mines-nantes.fr 24
- 25. DemonstrationScenario Generate Query Java.ecore (it can be any other plugin) org.eclipse.emf.ecore © AtlanMod - atlanmod-contact@mines-nantes.fr 25
- 26. Still more to come Concurrent Access Distributed models Synchronized unloading More Ecore utilities © AtlanMod - atlanmod-contact@mines-nantes.fr 26
- 27. Questions © AtlanMod - atlanmod-contact@mines-nantes.fr 27
- 28. Don’t forget to Check us out : www.neo4emf.com Contact us : neo4emf@gmail.co m Fork us at : https://github.com/ neo4emf/Neo4EMF © AtlanMod - atlanmod-contact@mines-nantes.fr 28