Obsel

Creation

An obsel is created by a POST query to a StoredTrace. It must have the following properties:

• http://liris.cnrs.fr/silex/2009/ktbs#hasTrace linking to the Trace

Optionally, it may have the following properties:

• rdf:type valued with one or several obsel type defined by the trace model
• http://liris.cnrs.fr/silex/2009/ktbs#hasBegin (see below)
• http://liris.cnrs.fr/silex/2009/ktbs#hasBeginDT (see below)
• http://liris.cnrs.fr/silex/2009/ktbs#hasEnd (see below)
• http://liris.cnrs.fr/silex/2009/ktbs#hasEndDT (see below)
• http://liris.cnrs.fr/silex/2009/ktbs#hasSubject identifying the person/agent being traced
• any attribute or relation defined by the trace model.

Specifying temporal bounds

If the trace’s origin is opaque:

• hasBegin must be specified;
• hasBeginDT and hasEndDT must not used;
• if hasEnd is not specified, the obsel will be considered to end at the same timestamp as its begin.

Otherwise, the trace’s origin is a timestamp:

• if neither hasBegin nor hasBeginDT is specified, the obsel will be considered to begin at the current time;
• if neither hasEnd nor hasEndDT is specified, the obsel will be considered to end at the same timestamp as its begin.

GET

Return the description of this obsel.

DELETE

Deletes this obsel from the trace. Note that this is a non-monotonic change.

NB: any other modification to an obsel is made through an amendment (PUT) of the whole obsel collection.