Jackalope JCR & PHP. OpenExpo Herbst 2009, Winterthur, 23. September Tobias Ebnöther & Christian Stocker

Transcription

1 Jackalope JCR & PHP OpenExpo Herbst 2009, Winterthur, 23. September Tobias Ebnöther & Christian Stocker

2 What is Content? Everything is Content! Content is Everything! Images, Documents, Video, Audio Newsentries, Blogposts, Comments User-Data, Login-Data, Permission Version-History, Workflow-Data...

3 What is a Content Repository? A service sitting between your App and the Data Store Common Goals (in general): Common rules for data access Common features implemented once Objects instead of SQL Data model is scriptable Examples of Content Repositories are CouchDB, Midgard2, JCR

4 What is JCR? Java Content Repository aka JSR-170 aka JSR-283 (Java Specification Request) aka Content Repository for Java Technology API Defines an abstract model for data storage and related services For unstructured assets and (semi-)structured information.

5 What is JCR? Simple, generic API Write portable code Only one language to learn Efficient access to large objects AND finely-structured hierarchical data Support for many common features like Query, Versioning, Access Control, Locking, Observation... Put them into the infrastructure level!

6 A little example of the API <% NodeIterator children = node.getnodes(); while (children.hasnext()) { Node child = children.nextnode(); Property title = child.getproperty("title"); %><%=title%><br/><% } %> Or in PHP <?php $children = $node->getnodes(); while ($children->hasnext()) { $child = $children->nextnode(); print $child->getproperty("title"). <br/ >; }

7 Repository Model

8 JCR Features & Layout Modular Layout Different Compliance Levels (JSR-170) A little bit different in JSR-283

9 JCR - Level 1 - Read Only

10 JCR - Level 1 - Read Only Most API calls in an Application For Content Delivery For static Websites For Reporting Applications

11 JCR - Level 2 - Write

12 JCR - Level 2 - Read/Write Entry Level Content Management Entry Level Document Management Content Aggregation Collaboration User Generated Content

13 JCR - Optional

14 JCR - Advanced Features Enterprise CMS Features :)

15 Why should I care? Until now you talked to SQL/RDBMS for hierarchical data Filesystem for large binary data LDAP for Users DOM/SAX for XML data YAML for config VCS for versioning => From now on -> JCR API

16 Why should I care? Until now you had to do in your application: Search (incl. Full-Text) Data Structure Access Control Versioning Locking Transactions => From now on -> Your Content Repo does that for you

17 What is Jackrabbit? Apache Project Reference Implementation of JSR-170 Actively maintained Current Stable Release: Next (Soon) Big Release: (Based on JCR 2.0) Commercial support (via Day s CRX) Webdav-Extended API (davex)

18 Jackrabbit s davex An extension to the different WebDAV Standards Exposes all JCR Methods via an HTTP Interface Batch Read/Write support to make it faster Ideal for our purposes -> no Java needs on the client side Example: cd /opt/svn/jackrabbit/jackrabbit-standalone/target java -Xmx256m -jar jackrabbit-standalone-2.0-snapshot.jar

19 Jackalope? Illustration by Kyle Jones

20 Technolgies * Jackrabbit 2 (alpha) * PHP 5.2+ * PHPUnit * Bamboo * github

21 but J = Java!

22 Where is?

23 State and Plans PHPCR API PHPCR API PHPCR API PHPCR API Frontend Servers Zend PHP Java Bridge / JCR Client in Jave WebDAV JCR Client in PHP WebDAV JCR Client in PHP WebDAV JCR Client in PHP JCR Repo in PHP Backend Servers Jackrabbit Server Jackrabbit Server JCR Repo in PHP

24 Community?

25 Where to find us * website: * github: * maillist: * irc: irc://irc.freenode.net/jackalope * Issuetracker:

26 Noch Fragen