Delete map annotations using populate metadata plugin

[atarkowska]

Map annotations can be created in a 2 ways: using default and custom namespaces.

https://github.com/openmicroscopy/openmicroscopy/blob/metadata52/components/tools/OmeroPy/test/integration/metadata/bulk_to_map_annotation_context_ns2.yml

By running:

bin/omero metadata populate --context bulkmap --cfg /path/to/bulkmap-config.yml Screen:ID

all the columns listed directly under columns are added to MapAnnoptaiton object with a NS: openmicroscopy.org/omero/bulk_annotations.

Columns listed in a groups will be given NS provided in namespace filed.

Although there are 2 commands handling delete:

bin/omero metadata populate --context deletemap Screen:ID

deletes just openmicroscopy.org/omero/bulk_annotations

bin/omero metadata populate --context deletemap --cfg /path/to/bulkmap-config.yml Screen:ID

deletes any map annotations for the namespaces given in bulkmap-config.yml including the default one. Do we need both?

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Deletion. By default script assumes any MapAnnotation is linked just to one Image or Well. With advance section (added in ome/openmicroscopy#4786) plugin allows to avoid duplicated MapAnnotations but delete doesn't respect it as currently there is no check across entire database if MapAnnotaitons are linked to images/wells across multiple containers.

cc: @manics @joshmoore @eleanorwilliams

[atarkowska]

Possible use cases for deletion:

• delete all MapAnnotaitons linked to Images/Wells in one Screen/Project with the respect to primary_group_keys.
• delete selected MapAnnotations (e.g. given namespace)