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the mmbase content management system the mmbase content management system table of contents introduction current status let s see it technical details features database abstraction and data models generic editors task based editors caching and invalidation clustering rmi and staging live images templating taglib pluggable security modularity builders applications components functions modules i18n other projects hosted at github com mmbase originally at the subversion server at scm mmbase org forked because dissappeared themselves sites still running on mmbase this page issue management plans for the future introduction mmbase is a content management system that was relatively popular in the zero s mainly in the netherlands it was originally developed around 1996 at vpro github this too it was open sourced around 2000 since 2002 it was supported by the mmbase foundation current status the product more or less died in the early 2010 s the original site and servers perished in 2020 or 2021 the domains mmbase nl and mmbase org were in possession of one of the original sponsors xs4all and were transferred in september 2021 the code base was copied to github a few years before let s see it the example webapp is dockerized and most things are still working mkdir p data work docker run it p 8080 8080 ghcr io mmbase example webapp and the surf to http localhost 8080 remember that the default username password you can use is admin admin2k this is running memory only to have it persistent it can e g be done like so curl l https tinyurl com r3j8zwpj o docker compose yml docker_user id u id g docker compose up this employs a docker compose yml file which uses volumes to persist data and work directories and a bit of configuration to make hsqldb write to csv files technical details mmbase is coded in java it used to have its own templating language scan but soon templating was mostly done in jsp and an extensive tag library was provided an early history and overview was also published in ibm systems journal february 2005 the last release was mmbase 1 9 6 releases used to be in our own mmbase maven repositories http www mmbase org maven2 http www mmbase org snapshots which don t exist either anymore i ve tried to push some artifacts to maven central and sonatype in the meantime this work is not completed the presently default branch on github is the mmbase 1 9 branch may be it would be usefull the at least create and publish a 1 9 7 version and publish all its artifacts to maven central at the time around 2010 or so we were actually busy with an mmbase 2 0 which would have involved portlet functionality and such we may try to release some of it after all we also started to split up the mono repository of mmbase 1 9 in several distinct github repository like bom just a maven pom file with dependencies bridge collects interfaces to mmbase mmbase used to have at least 2 implementations the core implementation which backs all data by a relational database the database layer uses xml s to define possible tables and supported several database implementations like mysql postgresql hsql informix and iirc even oracle the rmmci implementation which is backed by another mmbase via rmi this was used e g to create a workflow with publishing where via rmmci data was synced taglib used in templating talks to the mmbase bridge but also contained a lot of utility tags utils collects several utilities e g mmbase had its own logging framework originating before similar products like slf4j which hopefully will make 2 0 versions of these a bit more usefull e g i d myself sometimes wish i could use these nice mm tags again or perhaps some classes from org mmbase util even if i m not using mmbase itself anymore features database abstraction and data models mmbase has a database abstraction layer but was always based on relational databases like mysql or postgresql using xml configuration files one would define the possible tables referred to as builders and possible relations between them which themselves are builders too these builders could extend from each other and the core of mmbase would always provide the most basic ones generic editors using the thus defined model of data generic edit tools exists originally human editors were using these kind of editors task based editors later appeared task based editors or editwizards these were using xml s to define common edit tasks caching and invalidation query results are cached and events are sent to prune cache entries that may be effected the exact implementation of that is pluggable and configurable clustering it is possible to run several instances on the same database the instances may broadcast events between them using multicast or unicast in the last case the cluster communicates its members to each other using entries in the database rmi and staging live images templating taglib pluggable security modularity mmbase is several ways highly modular builders define the possible object types builders that can be used in the current mmbase instance applications define a collection of needed builders needed relations and bootstrap data for those components a component defines as set blocks of templated data functions functions basically wraps any peace of functionality and makes it available in templating modules i18n the internals of mmbase itself are pretty well i18ned encodings are taken care of and texts which may be displayed to users are normally translatable it does not supply an out of the box solution for actual content but implementors could implement that easily other projects hosted at github com mmbase originally at the subversion server at scm mmbase org cms container developed by finalist it group it used to be used by a variety of web sites i think mainly of municipalities and such didactor an e learning environment originally mainly developed by johannes i think and later by henk template engine used at vpro developed mainly by kees natuurmonumenten a cms leocms referring to i think the municipality of leeuwarden originally developed by henk mmweb the original mmbase org site using mmbase itself forked because dissappeared themselves a select a single sign on system which mmbase the aselect sub project had support for kupu a rich text editor which mmbase the richtext sub project had support for sites still running on mmbase the most noticeable one is open beelden source there might be more this page this page is hosted at github pages so currently are just static pages we re using adoc the original documentation of mmbase was in docbook xml s i ll try to get them published here too somehow issue management mmbase issues used to be hosted in a jira installation on the mmbase server we lost the database but iirc it wasn t very functional anymore because the installation was very much out dated plans for the future may be it is interesting to put some stuff in docker images to simply have a running mmbase 1 9 so we can see how it was like as i recall the taglib documentation was quite nice but was generated on the fly with jsp s maybe we should do something about that and copy a version to github pages too build the stuff from mmbase documentation and publish somewhere below here