ExperimenterWrapper and ExperimetnerGroupWrapper need own listChildren and listParents

[atarkowska]

Currently in on Experimenter/Group? Wrapper objects we can't call any method which load parent/children because listParents/listChildren is not design to do it. Would be good to come up with some strategy which links are loaded by default, if any how to name and write wrapping method to list it. Example:

DatasetWrapper.listChildren() - > list of images
DatasetWrapper.listParents()  - > list projects

Because children/parents might not work in every context, we could use direct name of linked object then. This could also be related to what _getQueryString is loading, for example:

ExperimenterWrapper.listGroups()             - > list groups user is member of
ExperimetnerGroupWrapper.listExperimenters() - > list users assign to the group

def _getQueryString(self):
""" 
Returns string for building queries, loading Experimenters only. 
"""

return "select distinct obj from Experimenter as obj left outer join fetch obj.groupExperimenterMap " \
"as map left outer join fetch map.parent g"

[jmoore]

Referencing ticket #9092 has changed sprint.

[jamoore]

Referencing ticket #9092 has changed sprint.

[jamoore]

Referencing ticket #9092 has changed sprint.