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Difference between revisions of "CDO"
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|valign="top"|'''Features'''<br> | |valign="top"|'''Features'''<br> | ||
− | [[ | + | [[#Model Integration Features|Model Integration]]<br> |
− | [[ | + | [[#CDO User Interface Features|CDO User Interface]]<br> |
− | + | [[#CDO Client Features|CDO Client]]<br> | |
− | [[ | + | [[#CDO Protocol Features|CDO Protocol]]<br> |
− | [[ | + | [[#CDO Server Features|CDO Server]]<br> |
− | [[ | + | [[#JDBC Storage Adapter Features|JDBC Storage Adapter]]<br> |
− | [[ | + | |
|} | |} | ||
− | ==Model Integration== | + | ==Model Integration Features== |
* EMF integration on model level (as opposed to the edit level) | * EMF integration on model level (as opposed to the edit level) | ||
* Support for generated models (just switch two .genmodel properties) | * Support for generated models (just switch two .genmodel properties) | ||
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<br> | <br> | ||
− | ==CDO User Interface== | + | ==CDO User Interface Features== |
* Eclipse view for working with CDO sessions, transactions, views and resources | * Eclipse view for working with CDO sessions, transactions, views and resources | ||
* Package Manager dialog per session | * Package Manager dialog per session | ||
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<br> | <br> | ||
− | ==CDO Client== | + | ==CDO Client Features== |
* Multiple sessions to multiple repositories on multiple servers | * Multiple sessions to multiple repositories on multiple servers | ||
* Multiple transactions per session | * Multiple transactions per session | ||
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<br> | <br> | ||
− | ==CDO Protocol== | + | ==CDO Protocol Features== |
* [[Net4j]] based binary application protocol | * [[Net4j]] based binary application protocol | ||
* Pluggable transport layer (shipped with NIO socket transport and JVM embedded transport) | * Pluggable transport layer (shipped with NIO socket transport and JVM embedded transport) | ||
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<br> | <br> | ||
− | ==CDO Server== | + | ==CDO Server Features== |
* Pluggable storage adapters | * Pluggable storage adapters | ||
* Multiple repositories per server | * Multiple repositories per server | ||
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<br> | <br> | ||
− | ==JDBC Storage Adapter== | + | ==JDBC Storage Adapter Features== |
* Supports all optional features of the [[#CDO Server|CDO Server]] | * Supports all optional features of the [[#CDO Server|CDO Server]] | ||
* Pluggable SQL dialect adapters | * Pluggable SQL dialect adapters |
Revision as of 04:47, 2 November 2007
CDO is a 3-tiers solution for distributed shared models and a complete model repository server.
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With CDO you can easily enhance your existing EMF models in such a way that they can be stored and subsequently maintained in a central model repository. While object relational mapping against a JDBC data source on the server side is the shipped default CDO provides for pluggable storage adapters that allow you to develop and use different mappers (like Hibernate- or OODB-based). On the client side CDO provides a default integration with EMF, the Eclipse Modeling Framework, although other model integrations on top of the CDO protocol are imaginable as well. |
Model Integration Features
- EMF integration on model level (as opposed to the edit level)
- Support for generated models (just switch two .genmodel properties)
- Support for dynamic models (just load .ecore file and commit to repository)
- Support for legacy models (for compiled models without access to .genmodel)
- Support for the Ecore meta meta model and descendants
CDO User Interface Features
- Eclipse view for working with CDO sessions, transactions, views and resources
- Package Manager dialog per session
- Eclipse editor for working with resources and objects
CDO Client Features
- Multiple sessions to multiple repositories on multiple servers
- Multiple transactions per session
- Multiple read-only views per session
- Multiple audit views per session (an audit is a view that shows a consistent, historical version of a repository)
- Multiple resources per view (a view is always associated with its own EMF ResourceSet)
- Inter-resource proxy resolution
- Multiple root objects per resource
- Object state shared among all views of a session
- Object graph internally unconnected (unused parts of the graph can easily be reclaimed by the garbage collector)
- Only new and modified objects committed in a transaction
- Transactions can span multiple resources
- Demand loading of objects (resources are populated as they are navigated)
- Partial loading of collections (chunk size can be configured per session)
- Adaptable pre-fetching of objects (different intelligent usage analyzers are available)
- Asynchronous object invalidation (optional)
- Clean API to work with sessions, views, transactions and objects
- CDOResources are EObjects as well
- Objects carry meta information like id, state, version and life span
- Support for OSGi environments (headless, Eclipse RCP, ...)
- Support for standalone applications (non-OSGi)
CDO Protocol Features
- Net4j based binary application protocol
- Pluggable transport layer (shipped with NIO socket transport and JVM embedded transport)
- Pluggable fail over support
- Pluggable authentication (shipped with challenge/response negotiation)
- Multiple acceptors per server
CDO Server Features
- Pluggable storage adapters
- Multiple repositories per server
- Multiple models (packages) per repository
- Multiple resources (instance documents) per repository
- Expressive XML configuration file
- Configurable storage adapter per repository (see below)
- Configurable caching per repository
- Clean API to work with repositories, sessions, views, transactions and revisions
- Support for OSGi environments (usually headless)
- Support for standalone applications (non-OSGi)
JDBC Storage Adapter Features
- Supports all optional features of the CDO Server
- Pluggable SQL dialect adapters
- Includes support for Derby, HSQLDB, MySQL and Oracle (TBD)
- Pluggable mapping strategies
- Includes horizontal mapping strategy (one table per concrete class)
- Includes vertical mapping strategy (TBD, one table per class in hierarchy)
- Supports different mapping modes for collections