SystemTypes and null Permissions are poorly documented

[jamoore]

Though there are lots of tickets regarding "system types", there's not enough to describe how they differ (e.g. no permissions, readable by everyone, writable by no one).

(11:21:42) jean-marie: problem is the following
(11:22:01) jean-marie: I allow to view other people data
(11:22:12) jean-marie: getAvailableGroups()
(11:22:28) jean-marie: return Map of GroupData, ExperimenterData
(11:22:56) jean-marie: I build groupData and Experimenter from result of iAdmin.lookupGroups
(11:23:32) jean-marie: but when I display I have to make sure that the user is actually allowed to see that group or experimenter
(11:23:36) jean-marie: that's why 
(11:23:53) jean-marie: was doing groupData.getPermissions => permissionData
(11:24:05) jean-marie: but getPermissions is null
(11:24:24) jean-marie: groupData is created doing new GroupData(IObject group)
(11:25:10) jean-marie: if IObject is loaded the permissionsData should be built automatically
(11:25:14) jean-marie: is that correct?
(11:31:54) Josh: ah. that's a quirk in the system.
(11:32:18) Josh: Something I definitely need to better document. 
(11:32:29) Josh: So, there are these things called system types.
(11:33:12) Josh: and if i could have made hibernate do what i wanted it to do, getDetails() on system types would return a SystemTypesDetails and on other types  a RegularDetails().
(11:33:20) Josh: that doesn't work for complicated and silly reasons.
(11:33:51) Josh: so, on a few types (experimenter, event, and in the future experimentergroup) getDetails().getPermissions() will return null.
(11:34:08) Josh: a permissions of null means that anyone can view and probably no one can write an object (R-R-R-). 
(11:34:38) jean-marie: so for now I don't bother
(11:34:47) jean-marie: ;-)
(11:34:52) Josh: :)
(11:34:56) jean-marie: I have the code in place 
(11:34:59) jean-marie: already
(11:35:02) Josh: so for now and for ever, you just don't have to worry about it. 
(11:35:10) Josh: there's no need to filter users and groups based on permissions.
(11:35:13) Josh: everyone can view them.
(11:35:21) Josh: otherwise the system gets silly. 
(11:35:33) jean-marie: basically if I do isVisible(group) return true
(11:35:40) Josh: yes.
(11:35:44) Josh: same for experimenter.
(11:35:46) jean-marie: and isVisble method will be modified later

[Melissa Linkert <melissa@…>]

(In [b664f5913437f6cf4300b8675ea4233ef69bcc95/bioformats.git]) Added more sophisticated image name parsing to OpenlabReader?. Closes #615, closes #616.

[Melissa Linkert <melissa@…>]

(In [b664f5913437f6cf4300b8675ea4233ef69bcc95/bioformats.git]) Added more sophisticated image name parsing to OpenlabReader?. Closes #615, closes #616.