= MPDL 2.0: software selection =

We evaluate the different content management systems (CMS) 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 (user management, versioning of documents, history function)
* user notes / annotations within documents
* easy document uploads
* scalability
* incomplex architecture
* system independant application design
* easy administration

== Software candidates ==

We limit our software selection to the four CMS systems Magnolia ^[#note1 [1]]^, 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||  [http://hartmutkern.mpiwg-berlin.mpg.de/ here]  ||  [https://it-dev.mpiwg-berlin.mpg.de/tracs/mpdl-project-content TRAC]  ||  [http://mpdl-proto.mpiwg-berlin.mpg.de/mpdl/query.xql MPDL system]  ||  [http://pubman.mpiwg-berlin.mpg.de/pubman/ Pubman]  ||

References: [[br]]
[=#note1 1.] which contains Apache Jackrabbit

== System architectures ==

=== Old system MPDL 1.0: eXist ===
  [[Image(architectureMpdl1.0-eXist.jpg, 600px)]]

=== MPDL 2.0: Language/XML technology
  [[Image(architectureMpdl2.0-xml-lt.jpg, 600px)]]

=== MPDL 2.0 - CMS: Magnolia ===
  [[Image(architectureMpdl2.0-cms-magnolia.jpg, 600px)]]

=== MPDL 2.0 - CMS: mediaWiki ===
  [[Image(architectureMpdl2.0-cms-mediawiki.jpg, 600px)]]

=== MPDL 2.0 - CMS: eXist ===
  [[Image(architectureMpdl2.0-cms-eXist.jpg, 600px)]]

=== MPDL 2.0 - CMS: eSciDoc ===
  [[Image(architectureMpdl2.0-cms-eSciDoc.jpg, 600px)]]

== Software design ==

See the MPDL 2.0 software design [/wiki/tmp/mpdl2.0-design here].


== Comparison of the main system features ==

=== Basic ===

|| ||Magnolia||mediaWiki||eXist||eSciDoc||
||Scalable||++||++||- ^[#note1 [1]]^||++||
||Incomplex architecture||+||++||-||-||
||Stable||++||++||- ^[#note2 [2]]^||+||
||Performant||++||++||++||+||
||Customizable||++||++||++||++||
||Many installations||++||++||+||-||
||In use at MPIWG||++||++||++||+||
||Easy administration||+||+||+||-||
||Free software||+||++||++||++||

References: [[br]]
[=#note1 1.] not really scalable for many documents (> 1000 XML documents with each 1 MB) [[br]]
[=#note2 2.] many system crashes on macosx servers at startup time (up to 2 days); sometimes system crash when a document is uploaded [[br]]

[[br]]
=== Datastore / Repository ===

|| ||Magnolia||mediaWiki||eXist||eSciDoc||
||User management||++||++||-||+||
||Version control system||++||++||-||+|| 
||History presentation||++||++||-||-|| 
||Index / Fulltext query system||++||++||++||++||
||Many document formats (xml, pdf, doc, html)||++||++||+||++||
||Multimedia support||++||++||-||+||
||Discussions / Blogs||++||++||-||-||
||RDBMS support||++||++||-||++||
||Wiki support||++||++||-||-||
||JCR support||++||-||-||-||

[[br]]
=== Extensions / Development ===

|| ||Magnolia||mediaWiki||eXist||eSciDoc||
||Predefined extensions / templates||++||++ ^[#note1 [1]]^ ^[#note2 [2]]^||-||-||
||Powerful programming||++ ^[#note3 [3]]^||++ ^[#note4 [4]]^||++ ^[#note5 [5]]^||+ ^[#note6 [6]]^||
||Easy application development||+||+||+||-||
||Index / Query system||++||++||++||++||
||Java Servlet / JSP support||++||-||++||++||
||XQuery / XPath support||+ ^[#note7 [7]]^||+ ^[#note7 [7]]^||++||+ ^[#note7 [7]]^||
||XML / XSL support||+||+ ^[#note7 [7]]^||++||+ ^[#note7 [7]]^||
||Notes / Annotations ^[#note8 [8]]^||-||-||-||-||
||Web page editor||++||++||-||-||


References: [[br]]
[=#note1 1.] footnotes: [http://meta.wikimedia.org/wiki/Help:Footnotes internal], [http://www.mediawiki.org/wiki/Extension:Cite Cite] [[br]]
[=#note2 2.] [http://wikisource.org presentation of old books] [[br]]
[=#note3 3.] Servlet / JSP, XSL / CSS, Freemarker, limited XPath (works also in JCR 2.0 ?)[[br]]
[=#note4 4.] php, Java over !JavaBridge [[br]]
[=#note5 5.] Java, Servlet / JSP, XQuery / XPath, XSL / CSS [[br]]
[=#note6 6.] Java, Servlet / JSP [[br]]
[=#note7 7.] has to be implemented in Java (relative easy) [[br]]
[=#note8 8.] at a point in the (XML)-document: after/before an element, after/before a word, at the 10th character after the beginning etc. (see [/wiki/schema/xpointer XPointer]) [[br]]

[[br]]
=== MPDL software ===

|| ||Magnolia||mediaWiki||eXist||eSciDoc||
||Get XML page fragment||+ ^[#note2 [2]]^||+ ^[#note2 [2]]^||++||+ ^[#note2 [2]]^||
||Document web viewer||+ ^[#note2 [2]]^||+ ^[#note2 [2]]^||++||+ ^[#note2 [2]]^||
||Document upload||++||++||+ ^[#note1 [1]]^ ^[#note2 [2]]^||+ ^[#note2 [2]]^||
||Document page dictionary view||+ ^[#note2 [2]]^||+ ^[#note2 [2]]^||++||+ ^[#note2 [2]]^||
||Browse lexicons and morph. database||+ ^[#note2 [2]]^||+ ^[#note2 [2]]^||++||+ ^[#note2 [2]]^||
||Morphological fulltext search||+ ^[#note3 [3]]^||+ ^[#note3 [3]]^||++||+ ^[#note3 [3]]^||

References: [[br]]
[=#note1 1.] already implemented but not stable enough [[br]]
[=#note2 2.] has to be implemented (relative easy) [[br]]
[=#note3 3.] has to be implemented (effort still not known) [[br]]