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Semelhante a Eclipse Enterprise Content Repository (ECR)
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Eclipse Enterprise Content Repository (ECR)
- 1. Eclipse Enterprise Content Repository (ECR) Overview of Nuxeo Core, a State of the Art Content Repository Contribution Florent Guillaume, Director of R&D, Nuxeo 2011-03-21
- 2. Agenda • What Is a Content Repository? • Eclipse Enterprise Content Repository (ECR) • What Is ECR? • Why Is ECR Good? 2
- 3. Who Am I? • Florent Guillaume (twitter: @efge) • Director of R&D at Nuxeo • Architect of content repository technologies • Apache committer, OASIS member • Nuxeo: open-source content management • Based in Paris / Boston / San Francisco 3
- 4. What Is a Content Repository? 4
- 5. What Is Content? • Everything is content! • Unstructured • Files, Images, Assets, XML, Binary streams • Structured • Schema, Metadata, Business Data, Tables • Semi-Structured • Files + Metadata, Web pages (assemblies, relations), Emails (attachments), Records Management 5
- 6. A Content Repository is Middleware • Between Application and Storage Subsystem • Does not replace either • Persistence Service • Stores structured and unstructured content • High-Level Abstraction • Stop caring about storage details • Focus on your domain model and its objects 6
- 7. What a Content Repository Is Not • Not a CMS (WCM, ECM, ...) • A CMS is one application on top of a Content Repository • Not a filesystem • If all you have is a filesystem, everything looks like a file • Not an ORM • Not that granular, don’t think in SQL terms • Not just for storage • Provides Services, Domain Model / Business Model 7
- 9. Eclipse ECR Proposal • Under the Eclipse Runtime project • Currently in the “Project Proposal” phase • Mentored by Gary Xue (Actuate) and Cédric Brun (Obeo) • Contributed by Nuxeo, based on Nuxeo Core • http://www.eclipse.org/proposals/rt.ecr/ 9
- 10. When to Use ECR? • Need to store Objects with Properties • And maybe Files • Don’t care about SQL • Need Access Control • Need Versioning, Queries, ... • Don’t want to reinvent the wheel 10
- 11. What Is ECR? 11
- 12. ECR: Services • Types and Schema definition • Persistence • Query • Access Control • Locking • Versioning 12
- 13. ECR: WebEngine • Expose content on the web • Fast framework based on JAX-RS • Provides FreeMarker templating (pluggable) 13
- 14. ECR: Content Automation • Based on Commands/Operations • Build reusable business logic • Accessible from UI frameworks and HTTP/REST 14
- 15. ECR: CMIS • OASIS Content Management Interoperability Services • HTTP APIs (AtomPub, SOAP, Browser Bindings) • OpenCMIS Java APIs • http://docs.oasis-open.org/cmis/CMIS/v1.0/cmis- spec-v1.0.html • http://www.slideshare.net/efge/cmis-and-apache- chemistry-apachecon-2010 15
- 16. HTTP (CMIS) HTTP OpenCMIS Java OpenCMIS Automation API Native Java API Core Services VCS Binary Store SQL Backend Other Backend Filesystem SQL Database Cloud 16
- 17. Why Is ECR Good? 17
- 18. ECR is Fast • Efficient use of storage backends • Use their native features and strengths • Don’t reinvent transactions, relations • Good caching 18
- 19. ECR Scales • Clusterable on top of a standard SQL database • Architecture ready for NoSQL backends • Lockless, pluggable Binary Store • Filesystem, SQL, Amazon S3, etc. 19
- 20. Full-Featured Services • Queries (NXQL, CMISQL, pluggable) • Versioning (pluggable) • Locking (synchronous, cluster-aware) • Access Control (groups, grant/deny, inheritance) • Proxies (shortcuts) • Events & Listeners (sync, async, async post-commit) • Audit Trail 20
- 21. ECR is Battle-Tested • Originates from Nuxeo Core • Used in Nuxeo DM, Nuxeo DAM, Nuxeo CMF • In production for 4 years • Thousands of deployments 21
- 22. ECR Uses OSGi Deployment • OSGi bundles • Extension points • Inspired by those from Eclipse • See Bogdan’s talk, Wednesday at 1pm in Stevens Creek room for more! 22
- 23. Summary • Store structured documents and assets • Efficient persistence, pluggable • APIs in Java and HTTP-based protocols • Used in production for 4 years 23
- 24. Today & Future • This is what we have today • It will be improved from Eclipse feedback • We want to follow Eclipse best practices 24
- 25. Thank You! 25
- 26. Additional Information & Links • http://www.eclipse.org/proposals/rt.ecr/ • http://www.eclipse.org/forums/index.php? t=msg&th=204297 • http://github.com/nuxeo/org.eclipse.ecr • http://www.slideshare.net/efge/cmis-and-apache- chemistry-apachecon-2010 • http://docs.oasis-open.org/cmis/CMIS/v1.0/cmis- spec-v1.0.html 26
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- Middleware: Defines domain model and services - used by the application - persisted in the storage\nPersistence Service: Is to semi-structured content what Hibernate is to objects with properties\nHigh-Level Abstraction: Abstract operations, Let the Content Repository do its job\n
- Not a Filesystem: A Content Repository offers much richer semantics\nMetadata, Versioning, Relationships, Non-path-based access\nNot an ORM: Content comes before relations and optimizations; Don’t limit yourself to SQL\n
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