= MPDL 2.0: software selection =

We evaluate the 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 (user management, versioning of documents, history function)
* user notes / annotations within documents
* easy document uploads
* scalability
* separation of CMS and language/XML technology
* incomplex and state on the art architecture

== Software candidates ==

We limit our software selection to the four 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 ==

=== MPDL 1.0: eXist ===
  [[Image(architectureMpdl1.0-eXist.jpg)]]

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

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

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

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

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


== Comparison of the main system features ==

=== Basic ===

|| ||Magnolia||mediaWiki||eXist||eSciDoc||
||Scalable||  ++  ||  ++  ||  - ^[#note1 [1]]^ ||  ++  ||
||Stable||  ++  ||  ++  ||  - ^[#note2 [2]]^ ||  +  ||
||Performant||  ++  ||  ++  ||  ++  ||  +  ||
||Customizable||  ++  ||  ++  ||  ++  ||  ++  ||
||Common use||  ++  ||  ++  ||  +  ||  -  ||
||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 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||  ++  ||  ++  ||  -  ||  -  ||

[[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||  ++  ||  ++  ||  ++  ||  ++  ||
||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]]