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The exisiting set of Metadata can be extended with own types.

The are two types of metadata:

  • Base Metadatypes (extends AbstractBaseMetaAttribute)
  • Combined Metadatatypes (extends AbstractCombinedMetaAttribute)


  • If you want to use combination of existing types (e.g. the new type and TimeInterval) you could define a combined metadata or let Odysseus do the work for you. In this case you will need to run Odysseus with the JDK and not JRE (i.e. tools.jar must be available).
  • Because there is a one to one mapping between a metadata interface and a metadata type, all metadata types must be final.

Creating a new base metadata type


Creating a combined metadata type


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