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PlanetDR is an open source Content repository developed under the umbrella of the spanish research project PLANET (Augmented Collaborative Plataform for content distribution and advanced training).

PlanetDR supports standards such as IEEE LOM, IMS Content Packaging (IMS CP), IMS DRI (EduSource Communication Language-ECL) and LORI SQI. PlanetDR also provides a federation mode between PlanetDR servers and plans to support the FIRE protocol. PlanetDR is developed in the Java language, using Apache Tomcat, MySQL and AXIS.

The ECL functions implemented by the PlanetDR's web services consist of search service, submit service and request service. There are different types of search, first, the quick search, that allows to ask for contents that verify in any field of the associated meta-data the wished word. The advanced search consists of two types: search by main meta-data category, where any field of a LOM meta-data category could be specified. The second type is accumulated search, that allows to make search on any field, linking together conditions of different LOM categories. It is possible to invoke the web services provided by the URV, or the web services implemented by any active content servers. It is also possible to invoque a feredated search, (a simulated gather service) linking together the results of the requests of all the active content servers.

We are developing an advanced federated architecture that seamless interconnects content repositories. We follow a SOA (Service Oriented Architecture) based approach using a UDDI Repository Registry, an efficient communication channel and advanced replication techniques.

We take part in the PROLEARN Network of Excellence.

Learning resources provided:

  • PlanetDR focuses on providing open source software for content repositories and not as a Repository service. Nevertheless, services such as MOREA are PlanetDR and they offer learning contents in spanish and galego.

Future Work

  • Decentralized UDDI repository and SOA inter-server architecture specifications support. Work in progress...



  • August 4, 2006 - New PlanetDR release.
    Description: This beta version includes spanish-english language internationalization and a new axis side control panel. And some minor bugs has been fixed. This release is distributed as a Windows and Linux installer.

  • August 3, 2006 - Search plugin for Firefox released
    Description: Now you can search automatically to our PlanetDR repository directly from your browser. You only have to install these search plugins for your Firefox: PlanetDR quick search format and another for Google-like results.

  • June 6, 2006 - New PlanetDR release.
    Description: This beta version includes several new features such as content massive upload and SQI/ECL quick search and google-like search . This release is distributed as a Windows and Linux installer.

  • May 5, 2006 - New PlanetDR release.
    Description: This beta version includes support for ECL and LORI SQI search and server services, supporting IEEE LOM, IMS-CP and WebCT digital resources.

  • April 28, 2006 - Incoming PlanetDR release.
    Description: A new PlanetDR version will be released next week with LORI SQI support.

  • March 29, 2006 - Working in a new PlanetDR version.
    Description: We are working in a new PlanetDR version which will follow the last and more common used standards, like IMS CP and LORI SQI, will offer more robust and reliable servers federation and will support efficient data replication.

  • February 13, 2006 - Source code distribution updated.
    Description: This beta version includes support for the IMS Content Packaging standard.