Enable filtering based on GND ontology types

[acka47]

Moved here with some adjustments from lobid/lodmill#447.

Example query: "heinsberg"

Facets/possibilities for filtering by secend-level types:

• Person
• Subject Heading
• Place or Geographic Name
• Converence or Event
• Family
• Corporate Body
• Work

(Similar to e.g. https://portal.dnb.de/opac.htm?method=simpleSearch&query=heinsberg)

Clicking a facet should yield filtered search results with sub-facets, e.g.:

Place or Geographic Name:

• Building or Memorial
• Administrative Unit
• Fictive Place
• ...

[fsteeg]

Deployed to test: http://test.lobid.org/authorities/search

[ChristophEwertowski]

The type "Family" is missing at the collection of second-level types. And drilling-down facets isn't implemented right, see query where are "Works" under "Persons".

[fsteeg]

The type "Family" is missing at the collection of second-level types.

Fixed on test: http://test.lobid.org/authorities/search

And drilling-down facets isn't implemented right, see query where are "Works" under "Persons".

The faceted search shows all types for the selected result list, which has entries with both Work and Person. If that's not right it's a data issue in the GND, see e.g. http://d-nb.info/gnd/1049620550

[ChristophEwertowski]

Mmh, I searched for the person of the example and filtered it for Person at the GND. After this there is no possiblity to filter with other facets. So I think it's okay. Anyhow I'm assigning it to acka47 because I'm not sure I understood it right.

[acka47]

+1

The problems mentioned are due to obviously incorrect typing in the GND (see e.g. http://test.lobid.org/authorities/search?q=%22Dialogues+socratiques+ou+entretiens+sur+divers+sujets+de+morale%22).

[acka47]

Closing.