The Ultimate
Content
Store?
JCR in 15 minutes
Bertrand Delacrétaz
Senior Developer, R&D, Day Software, www.day.com
ASF member
bdelacretaz@apache.org
blog: http:/
/grep.codeconsult.ch
twitter: @bdelacretaz
Slides revision: 2009-11-01
Slides theme design: David Nuescheler
Slides at http://x42.ch/01.10.01

JCR
JCR = Java Content Repository API
JSR-170 / JSR283
-
Everything Is Content - and JCR manages it as
trees of Nodes and Properties, using rich data
types.

JCR
JCR = Java Content Repository API
JSR-170 / JSR283
-
Everything Is Content - and JCR manages it as
trees of Nodes and Properties, using rich data
types.
silve
r

The JCR spec
gpRJNTM
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péÉÅJiÉ~ÇW
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pí~íìëW=
cáå~ä=RÉäÉ~ëÉ=NTJàìåJOMMR
bñéÉêí=dêoìéW

The JCR spec
gpRJNTM gpRJOUP
`oåíÉåí=RÉéoëáíoêó=Ñoê=
g~î~qj=íÉÅÜåoäoÖó=^mf=îOKM
péÉÅJiÉ~ÇW
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pí~íìëW=
cáå~ä=RÉäÉ~ëÉ=NQJëÉéíJOMMV
bñéÉêí=dêoìéW

What’s JCR?

What’s JCR?
“The API should be a standard,
implementation independent, way to
access content bi-directionally on a
granular level to a
content repository.”

What’s JCR?
“The API should be a standard,
implementation independent, way to
access content bi-directionally on a
granular level to a
content repository.” ?

What’s JCR?
“The API should be a standard,
implementation independent, way to
access content bi-directionally on a
granular level to a
content repository.” ?

Best of both worlds.
data base f il es ys te m
hier-
integ archi
rity
structu
re es
read streams
tx write
access
query locking control
multi-
value
un-structured obser- versioning
“full-text” sort vation
order
content repo sit or y

Best of both worlds.
data base f il es ys te m
hier-
integ archi
rity
structu
re es
read streams
tx write
access
query locking control
multi-
value
un-structured obser- versioning
“full-text” sort vation
order
content repo sit or y

Known compliant Repositories

Known compliant Repositories
* using third party connector
* *
Exo Microsoft
Apache Jackrabbit Oracle XML DB ECMS Platform Sharepoint OpenText Livelink
*
Day CRX IBM FileNet P8 Xythos Repository Alfresco ECM Vignette V7
* *
any ors
ow mvend ?
H S ed
Interwoven +hund DBMou ne
R do y
r s
Repository IBM CM EMC Documentum regiede of TCKs
st

Some known JCR Applications

Some known JCR Applications
Fast
BEA Portal Sun Oracle Portal Enterprise Search
JBoss Portal Interface 21
OpenPortal
Day Communique Spring Framework
magnolia WCMS DAM
Apache Sling Day Communique
Alfresco ECMS Mindquarry Collab
Collaboration Apache Tapestry
QSLabs
Apache Compliance Day Communiqué
Cocoon WCMS IBM FileNet
Artifactory medic-2-medic WebSiteManager
Apache James Maven Proxy mapofmedicine
Exo
ECMS Platform TYPO3
GX WebManager v5.0 WCM
InfoQ Hippo Liferay
Nuxeo ECM Online Community CMS Enterprise Portal
Jahia Sakai
Percussion Framework E-learning
Rhythmix QuickWCM Sourcemix
WCMS Lutece Sourcemix

Some known JCR Applications
Fast
BEA Portal Sun Oracle Portal Enterprise Search
JBoss Portal Interface 21
OpenPortal
Day Communique Spring Framework
magnolia WCMS DAM
Apache Sling Day Communique
Alfresco ECMS Mindquarry Collab
Collaboration Apache Tapestry
QSLabs
Apache Compliance Day Communiqué
Cocoon WCMS IBM FileNet
Artifactory medic-2-medic WebSiteManager
Apache James Maven Proxy mapofmedicine
Exo
ECMS Platform TYPO3
GX WebManager v5.0 WCM
InfoQ Hippo Liferay
Nuxeo ECM Online Community CMS Enterprise Portal
Jahia Sakai
Percussion Framework E-learning
Rhythmix QuickWCM Sourcemix
WCMS Lutece Sourcemix

JCR code excerpt
Repository repository = new TransientRepository();
Session session = repository.login(...);
/ Create content
/
Node root = session.getRootNode();
Node hello = root.addNode("hello");
Node world = hello.addNode("world");
world.setProperty("message", "Hello, World!");
session.save();
/ Retrieve content
/
Node node = root.getNode("hello/world");
print(node.getPath());
print(node.getProperty("message").getString());

Content models

JCR == NoSQL ?
Not as “webscaly” as other NoSQL systems today.
Growing in this direction.
Offers a lot in terms of application infrastructure.
Pragmatic solution for today, and not everybody needs
webscale!

JCR == NoSQL ?
Not as “webscaly” as other NoSQL systems today.
Growing in this direction.
Offers a lot in terms of application infrastructure.
Pragmatic solution for today, and not everybody needs
webscale!
ache: itor y
@ap repos
it JCR ns layer
krabb licatio
Jac
Sling app