= Future development MPDL =

== Software selection ==
We examine different software systems by means of their main functions and features for our extended user requirements in the area of web based access to XML-documents. The main new requirements are:
* state of the art web GUI
* datastore / repository functionality (versioning
* user notes / annotations

=== Basic information ===

We limit the examination to four systems: Magnolia, mediaWiki, eXist and eSciDoc:

|| ||Magnolia||mediaWiki||eXist||eSciDoc||
||Webpage||[http://www.magnolia-cms.com/ here]||[http://www.mediawiki.org/wiki/MediaWiki here]||[http://exist.sourceforge.net/ here]||[https://www.escidoc.org/ here]||
||MPIWG installation||see [http://hartmutkern.mpiwg-berlin.mpg.de/ here]||see for example this [https://it-dev.mpiwg-berlin.mpg.de/tracs/mpdl-project-content TRAC]||see [http://mpdl-proto.mpiwg-berlin.mpg.de/mpdl/query.xql MPDL system]||test system: see [http://pubman.mpiwg-berlin.mpg.de/pubman/ Pubman]||


Functions which are not mandadory for our requirements are marked italic. 

=== Basic needs ===

|| ||Magnolia||mediaWiki||eXist||eSciDoc||
||Scalable||++||++||-||++||
||Stable||++||++||-||+||
||Performant||++||++||++||+||
||Customizable||++||++||++||++||
||In use at MPIWG||++||++||++||+||
||Free software||+||++||++||++||

=== Datastore ===

|| ||Magnolia||mediaWiki||eXist||eSciDoc||
||User management||++||++||-||+||
||Version control system||++||++||-||+||
||Index / Query system||++||++||++||++||
||Many document formats (xml, pdf, doc, html)||++||++||+||++||
||Discussions / Blogs||++||++||-||-||


=== Extensions / Development ===

|| ||Magnolia||mediaWiki||eXist||eSciDoc||
||Predefined extensions / templates||++||++||-||-||
||Programming||++ ^[#note1 1]^||++ ^[#note2 2]^||++ ^[#note3 3]^||+ ^[#note4 4]^||
||Index / Query system||++||++||++||++||
||Many document formats (xml, pdf, doc, html)||++||++||+||++||
||Notes / Annotations||-||-||-||-||

Notes: [[br]]
[=#note1 1]: Freemarker, Java Server Pages, XSL/CSS, limited XPath (works also in JCR 2.0 ?)[[br]]
[=#note2 2]: php, Java over JavaBridge [[br]]
[=#note3 3]: Java, XQuery / XPath, XSL / CSS [[br]]
[=#note4 4]: Java [[br]]

=== MPDL software ===
|| ||Magnolia||mediaWiki||eXist||eSciDoc||
||Get XML page fragment||-||-||++||-||
||Language technology||-||-||++||-||
||Document upload||++||++||- ^[#note1 1]^||+ ^[#note2 2]^||
||Web viewer||+ ^[#note2 2]^||+ ^[#note2 2]^||++||+ ^[#note2 2]^||

Notes: [[br]]
[=#note1 1]: already implemented but not stable enough [[br]]
[=#note2 2]: has to be implemented (relative easy) [[br]]



### temporary stuff  ###

=== Magnolia ===
* Advantages
  * version control system with easy usable history functions (commercial EE version)
  * many installations and users worldwide
  * multimedia support (image, sound, video)
* Disadvantages
  * user interface: all web pages have to be implemented
  * XQuery support has to be implemented in Java (relative easy)

=== mediaWiki ===
* Advantages
  * version control system with easy usable history functions
  * many installations and users worldwide
  * user interface
    * already included (Wiki web pages)
    * simple (e.g. for data uploads)
    * user know the Wiki system
    * no extra web server
  * many extensions / templates
    * footnotes: [http://meta.wikimedia.org/wiki/Help:Footnotes internal], [http://www.mediawiki.org/wiki/Extension:Cite Cite]
    * [http://wikisource.org presentation of old books]
  * multimedia support (image, sound, video)
* Disadvantages
  * XML/XSL/CSS support has to be implemented in Java (relative easy)
  * XQuery support has to be implemented in Java (relative easy)

=== eXist + Zope ===
* Advantages
  * some installations and users worldwide
  * XQuery/XPath support
* Disadvantages
  * not scalable for many documents (> 1000 XML documents)
  * not really stable
    * many system crashes at startup time (up to 2 days)
    * sometimes system crash when a document is uploaded
  * no usable version control system included, no history functions
  * user interface: all web pages have to be implemented 

=== eSciDoc ===
* Disadvantages
  * not many users, installations and developers
  * performance of many queries not tested
  * very complicated: much work for administration and development (API etc.)
  * version control system: no easy usable history functions
  * user interface: all web pages have to be implemented 
  * not many extensions / templates
  * XQuery support has to be implemented in Java (relative easy)