[deepamehta-users] DeepaMehta 4.0.1 released

Jörg Richter jri at deepamehta.de
Do Jul 28 20:20:00 CEST 2011


on July 28, 2011 DeepaMehta 4.0.1 has been released.

This release fixes a bug: when editing an association (e.g. retyping) the role types are not compromised.

Thanks Malte for reporting!

You can update a 4.0 installation while keeping your content, however a 4.0.1 clean install is recommended (see note below).
See the README for update instructions (scroll down).

Download the release:

Build from Source:

For reporting issues please register at our new trac-site:



Technical note 1:

In DeepaMehta 4.0.1 the data model has slightly changed: Topic types are never used as role types anymore. Instead the new role type "Default" is used. The existing 4.0 type definitions in the DB are not migrated. However, the 4.0.1 application code is compatible with the 4.0 model.

Affected are the following association semantics:
    - Core: data type assignment of a topic/association type
    - Core: index mode assignment of a topic/association type
    - Topicmaps: topic/association assignments of a topicmap
    - Workspaces: topic/type assignments of a workspace

CAUTION when editing such an association that was created with 4.0:
In this situation you must set role type "Default" manually for the correct association end.
Otherwise the respective association gets corrupted.

For associations newly created in 4.0.1 there is no issue.

Technical note 2:

These 3rd party components are updated in 4.0.1:
- Jersey 1.5 -> 1.8
- Jettison 1.2 -> 1.3
- Neo4j Mehtagraph 0.7 -> 0.8

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