Difference between revisions of "CDO"

Latest revision as of 12:05, 1 November 2016

CDO is both a development-time model repository and a run-time persistence framework. Being highly optimized it supports object graphs of arbitrary size.

CDO offers transactions with save points, explicit locking, change notification, queries, temporality, branching, merging, offline and fail-over modes, ...

The storage back-end is pluggable and migrations between direct JDBC, Hibernate, Objectivity/DB, MongoDB or DB4O are seamless for CDO applications.

You may also want to visit our homepage.

Documentation

CDO Explorer
CDO Poster
Client Architecture
Server Configuration
CDO Presentations
Webinar 2010/04

Tutorials

Preparing EMF Models for CDO
Using the CDO User Interface
Tweaking CDO Performance
User Contributed Documentation

Resources

FAQ
Downloads and Updates
Source Installation
Development Guidelines
Release Engineering

Features

Model Integration
User Interface
Client Side
Network Protocol
Server Side
DB Store
MongoDB Store
Hibernate Store: Quick Start, Tutorial
Objectivity Store
New And Noteworthy for CDO 2.0
New And Noteworthy for CDO 3.0
New And Noteworthy for CDO 4.0

Model Integration Features

EMF integration at model level (as opposed to the edit level)
Supported model types:
- Generated models (just switch two .genmodel properties)
- Dynamic models (just load .ecore file and commit to repository)
- Legacy models (for compiled models without access to .genmodel)
- Ecore meta meta model and descendants

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 Explorer

Client Side 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)

Network Protocol Features

Net4j based binary application protocol
Pluggable transport layer (shipped with NIO socket transport, polling HTTP and JVM embedded transport)
Pluggable fail over support
Pluggable authentication (shipped with challenge/response negotiation)
Multiple acceptors per server

Server Side Features

Pluggable storage adapters
- See DB Store Features
- See Hibernate Store Features
- See Store Feature Matrix
- Objectivity support coming soon
- Native memory storage adapter
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)

Wikis: Net4j | EMF | Eclipse

@@ Line 1: / Line 1: @@
-CDO is both a technology for ''distributed shared models'' and a fast, server-based ''O/R mapping'' solution. 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.
+__NOTOC__<br>
-[[Image:CDOOverview.png]]
+{| border="0"
+|-
+| valign="top" | [[Image:CDOOverview.png]]
+| &nbsp;<br>
+| &nbsp;<br>
+| &nbsp;<br>
+| width="500" valign="top" |
+CDO is both a development-time model repository and a run-time persistence framework. Being highly optimized it supports object graphs of arbitrary size.
-==Further Reading==
+CDO offers transactions with save points, explicit locking, change notification, queries, temporality, branching, merging, offline and fail-over modes, ...
-* [[CDO Client]]
-* [[CDO Server]]
+The storage back-end is pluggable and migrations between direct JDBC, Hibernate, Objectivity/DB, MongoDB or DB4O are seamless for CDO applications.
+You may also want to visit our '''[http://www.eclipse.org/cdo homepage]'''.
+|}
+<br>
+{| cellspacing="10" border="0"
+|-
+| valign="top" | '''Documentation'''<br>
+[[CDO Explorer]]<br>
+'''[http://wiki.eclipse.org/images/0/07/CDO-Poster.pdf CDO Poster]'''<br>
+[[CDO/Client|Client Architecture]]<br>
+[[CDO/Server Configuration Reference|Server Configuration]]<br>
+[http://www.eclipse.org/cdo CDO Presentations]<br>
+[http://live.eclipse.org/node/884 Webinar 2010/04]<br>
+| valign="top" | '''Tutorials'''<br>
+[[CDO/Preparing EMF Models|Preparing EMF Models for CDO]]<br>
+[[CDO/Using the User Interface|Using the CDO User Interface]]<br>
+[[CDO/Tweaking Performance|Tweaking CDO Performance]]<br>
+'''[[CDO/User Contributed Documentation | User Contributed Documentation]]'''<br>
+| valign="top" | '''Resources'''<br>
+'''[[FAQ for CDO and Net4j|FAQ]]'''<br>
+[http://www.eclipse.org/cdo/downloads/ Downloads and Updates]<br>
+[[CDO Source Installation|Source Installation]]<br>
+[[CDO Development Guidelines|Development Guidelines]]<br>
+[[CDO/Release Engineering|Release Engineering]]<br>
+| valign="top" | '''Features'''<br>
+[[#Model_Integration_Features|Model Integration]]<br>
+[[#User_Interface_Features|User Interface]]<br>
+[[#Client_Side_Features|Client Side]]<br>
+[[#Network_Protocol_Features|Network Protocol]]<br>
+[[#Server_Side_Features|Server Side]]<br>
+[[CDO/DB Store|DB Store]]<br>
+[[CDO/MongoDB Store|MongoDB Store]]<br>
+[[CDO/Hibernate Store|Hibernate Store]]: [[CDO/Hibernate_Store/Quick_Start|Quick Start]], [[CDO/Hibernate_Store/Tutorial|Tutorial]]<br>
+[[CDO/Objectivity Store|Objectivity Store]]<br>
+[[/New And Noteworthy for CDO 2.0/]]<br>
+[http://www.eclipse.org/cdo/documentation/relnotes_30/relnotes-3.0.html New And Noteworthy for CDO 3.0]<br>
+'''[https://bugs.eclipse.org/bugs/buglist.cgi?keywords=noteworthy;keywords_type=allwords;bug_severity=enhancement;resolution=FIXED;classification=Modeling;query_format=advanced;version=4.0;component=cdo.core;component=cdo.dawn;component=cdo.db;component=cdo.docs;component=cdo.hibernate;component=cdo.net4j;component=cdo.net4j.db;component=cdo.net4j.ui;component=cdo.objy;component=cdo.releng;component=cdo.ui;product=EMF New And Noteworthy for CDO 4.0]'''<br>
+|}
+<br>
+== Model Integration Features  ==
+*EMF integration at model level (as opposed to the edit level)
+*Supported model types:
+**Generated models (just switch two .genmodel properties)
+**Dynamic models (just load .ecore file and commit to repository)
+**[[/Legacy Mode/|Legacy models]] (for compiled models without access to .genmodel)
+**Ecore meta meta model and descendants
+<br>
+== 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
+*[http://wiki.eclipse.org/CDO/Explorer_%28work_in_progress%29 CDO Explorer]
+<br>
+== Client Side 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 [[EObject]]s 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)
+<br>
+== Network Protocol Features  ==
+*[[Net4j]] based binary application protocol
+*Pluggable transport layer (shipped with NIO socket transport, polling HTTP and JVM embedded transport)
+*Pluggable fail over support
+*Pluggable authentication (shipped with challenge/response negotiation)
+*Multiple acceptors per server
+<br>
+== Server Side Features  ==
+*Pluggable storage adapters
+**See [[CDO/DB Store|DB Store Features]]
+**See [[CDO/Hibernate_Store|Hibernate Store Features]]
+**See [http://download.eclipse.org/modeling/emf/cdo/drops/R20140610-0212/help/org.eclipse.emf.cdo.doc/html/reference/StoreFeatures.html Store Feature Matrix]
+**Objectivity support coming soon
+**Native memory storage adapter
+*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)
+<br> <br>
+----
+Wikis: [[Net4j]] | [[EMF]] | [[Eclipse]]
+[[Category:Modeling]] [[Category:EMF]] [[Category:CDO]] [[Category:Net4j]]

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