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Bosch IoT Device Management: Metadata support

The latest deployment of Bosch IoT Things, the digital twin layer of Bosch IoT Device Management, comes with basic support on metadata.

A thing may optionally contain metadata information, e.g. about single feature properties, complete features and also attributes or other data stored in a digital twin (thing). This metadata can contain additionally information which shall not be treated as part of the twin’s value, however may be useful to provide some context of the twin’s data.

Metadata has not its own API but can only be updated/set while modifying the state of a twin as a side effect. By default, metadata is not returned at API requests, but must be asked for explicitly. See Eclipse Ditto documentation.

Metadata can also be included in the search index – see search fields.

At this occasion, various minor bugs have also been fixed.