Quote:
Originally Posted by beedaddy
@citronalco I certainly did something wrong and I hope you can give me a hint: The DNB gave me a access token, but fetching metadata only returns me a cover image but no other metadata like comments or so. What could be the reason for that? (And I wonder what I should select for "fetch subjects"…)
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There are several things you could check:
- In the generic metadata configuration dialogue (the window where you can select which metadata plugin you want to use): Have you selected any metadata fields to download?
- The plugin returns the same metadata, albeit much slower, without a token (token field empty in the config window). Do you get metadata without a token? If yes: Check if you've entered the token correctly (maybe you accidentally pasted a space at the end or similar)
- When retrieving metadata has finished you could have a look at the protocol and search for the "Query URL". You can simply paste the URL into a browser and check if you get a longish XML file or a error message.
If nothing of the above solves your problem: Please send me the protocol of a search.
Just in this moment DNB seems to have issues with their API anyway: Currently they don't check the token at all and accept anything - Maybe they simply have issues with their infrastructure. I doubt they intentionally opened their API for unauthenticated users - though I'd be happy if they would.
About the subjects:
There are two types of subjects:
- GND subjects are selected by librarians from a standardized catalogue (the "Gemeinsame NormDatei"), so they are are not available for every book, but they are usually high quality
- Non GND subjects are simply delivered by the publisher and can be anything. There's no quality checking done by DNB, so it can be something useful or just marketing SEO crap.
Older books usually do not have non-GND but GND subjects, with newer books it's the other way round.
Personally I prefer the setting "GND subjects if available, otherwise non-GND subjects", but it's a matter of taste.