List all projects in group

Development
#1

Hi,

I’d like to get a list of all projects in a group in a Fiji script (jython).

After establish the gateway the groups the user is a member is listed and the sector context is set to one of those

user=gateway.getLoggedInUser()
groups = user.getGroups()
group = group[ichoice]      # select a group to list 
ctx = SecurityContext( group.getId() )

After this the browseFacilty is used to list the projects:

from omero.gateway.facility import BrowseFacility
browse = gateway.getFacility(BrowseFacility)

users_projects = browse.getProjects(ctx)               # just the logged in users projects
u308_projects  = browse.getProjects(ctx, Long(308))    # just userID=308 projects

It seems the way to get the list all projects is the iterate over the user Ids. However I can’t seem to get information of the members of the group. The GroupData returns None for the experimenter information

group.getExperiments() # = None
groupgetMembersOnly()  # = None

Is there another way to list all projects in a group or is there something I need to do with the SecutoryContext inorder to list group members?

Thanks,

Chris

#2

Hi Chris,

yes, you’d have to iterate over all users. Unfortunately the list returned from user.getGroups() is shallow and only contains the groups the user is a member of, but lacks the information about the members of these groups. But you can load a fully initialized list of groups via the BrowseFacility too: If you replace the line groups = user.getGroups() with groups = browse.getAvailableGroups(ctx, user) then you’ll be able to iterate over the group members with group.getExperimenters().

Regards,
Dominik

#3

Hi Dominik,

thanks for the info - was beginning to think the Java collection was not getting transferred to python or something.

I found a way to get the projects, do you think this is a legitimate use of the API or some weird corner case?

from omero.sys import ParametersI
params = ParametersI()
projects = browse.getHierarchy( ctx, ProjectData, [], params )

Cheers,

Chris

#4

You are right, I forgot about the ‘getHierarchy’ method, sorry. It’s absolutely ok to use it. In fact that’s actually the recommended way to do it, because it will properly load/initialize the child objects (Datasets, etc.) too.
Kind Regards,
Dominik

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