Relate list of values with following list of units

[sellth]

Prelude

We allow semicolon-separated lists of values in Characteristics, Parameter Value, and possibly Factor Value fields.

@attr.s(auto_attribs=True, frozen=True)
class Characteristics:
    """Representation of a ``Characteristics[*]`` cell."""

    #: Characteristics name
    name: str
    #: Characteristics value
    value: List[FreeTextOrTermRef]
    #: Characteristics unit
    unit: FreeTextOrTermRef

When (a list of) ontology references are present, the value attribute becomes (a list of) OntologyTermRef objects, integrating ontology information with the Characteristics* values. Units are modelled as a separate class attribute.

Issue

When filling a Characteristics* field with a semicolon-separated list of values, one can follow up with a semicolon-separated list of ontology references and a list of units, but in SODAR only the ontology references are properly linked to the respective values. Units are not.

Questions

• How can we relate a list of units to these values?
• Do we want to solve this in Altamisa or should SODAR link them when rendering samplesheets?

In any case the unit attribute would need to be changed to a List[].

summoning @mikkonie @mkuhring @holtgrewe