[Metadata Source Plugin] Deutsche Nationalbibliothek

[citronalco]

I drafted a new release v3.0.1.

Changes:
- Improved XPATH syntax
- Fixed duplicate "urn:urn:" prefix at URN
- If a book has a ISBN then only search for the ISBN and ignore title and authors. This is how other plugins handle this, too
- Removed web scraping and SRU token: Beginning of April 1st 2021 DNB's SRU interface is publicly available

Currently it's only available here: https://github.com/citronalco/calibr...ses/tag/v3.0.1
Feel free to test!
If no errors are reported here or on Github I am going publish it as update in Calibre's plugin manager beginning of April.

[citronalco]

No bugs were reported, so I've updated the the first post in this thread and attached the new version.

Have fun!

[citronalco]

This release re-enable the cover download: DNB has changed the URL.
See first post.

[collaco]

While the plugin portal is still showing version 3.1.2 as current, we get a -
*****
calibre, version 5.34.0
<b>SyntaxError</b>:invalid syntax (calibre_plugins.DNB_DE.__init__, line 130)

File "calibre_plugins.DNB_DE.__init__", line 130
title_v.append([ ' '.join(self.get_title_tokens(
^
SyntaxError: invalid syntax
***
- error while trying to install the plugin from the downloaded zip-file.
Any idea?
TYIA

[citronalco]

Originally Posted by collaco

While the plugin portal is still showing version 3.1.2 as current, we get a -
*****
calibre, version 5.34.0
<b>SyntaxError</b>:invalid syntax (calibre_plugins.DNB_DE.__init__, line 130)

File "calibre_plugins.DNB_DE.__init__", line 130
title_v.append([ ' '.join(self.get_title_tokens(
^
SyntaxError: invalid syntax
***
- error while trying to install the plugin from the downloaded zip-file.
Any idea?
TYIA

You're right.
I've uploaded a fixed v3.1.4.

[Moonbase59]

Thanks for that. Is it supposed to be installed from the first post? Because it doesn’t show up in Calibre yet:

[citronalco]

Originally Posted by Moonbase59

Thanks for that. Is it supposed to be installed from the first post? Because it doesn’t show up in Calibre yet:

It usually takes a few days until the list gets updated.

[Moonbase59]

Originally Posted by citronalco

It usually takes a few days until the list gets updated.

Didn’t know that, thanks!

[davidfor]

Originally Posted by citronalco

It usually takes a few days until the list gets updated.

The index and threads are read at every hour at half-past the hour. And the changed plugins are retrieved and cached on the server. I don't know exactly how long that takes, but, it shouldn't be more than a few minutes. There have been an occasional problem, but they get fixed as soon as someone reports them. I can see that 3.1.4 is available now. From the time on @Moonbase59's post, I think they just missed it.

[Moonbase59]

Yup, what a coincidence. It now showed 3.1.4 and updated.

[Wiggo]

I don't know if it's me or the plugin.

I always get "LN, FN" for authors but with the other Lib-plugs the normal "FN LN", so I always have tho change it.
Is it possible to change this or make it optional?

[citronalco]

Originally Posted by Wiggo

I don't know if it's me or the plugin.

I always get "LN, FN" for authors but with the other Lib-plugs the normal "FN LN", so I always have tho change it.
Is it possible to change this or make it optional?

It's the plugin:
Most other metadata sources (Amazon, BOL,...) only return "FN LN" and Calibre has to guess what's the last name for the sort order.
DNB delivers authors as "LN, FN", so Calibre does not have to guess, sort order is always perfectly correct, and I don't want to sacrifice that.

According to the docs, Calibre's plugin API allows me to set three metadata fields for authors: authors, author_sort and author_sort_map:

"author" is the list that gets displayed as "Authors", "author_sort" is a single author's name used for sorting books and gets displayed nowhere(?).
The docs for "authors_sort_map" read like I could use that to assign author names in "FN LN" to their "LN, FN". This way Calibre I could use the correct data from DNB, Calibre would not have to guess, and we could have "FN LN" for authors. So that would be the solution making everyone happy.
But regardless what I try, I can't get it working.

[citronalco]

Asked the stuff above in the development forum. Kovid Goyal, the creator of Calibre, nearly immediately responded with an easy solution. If you have some money left: He really deserves a donation.

I've changed the authors names from "lastname, firstname" to "firstname lastname" while keeping the sort order intact and attached an updated plugin version.
If you or someone else encounters any problems with it please let me know!

[Moonbase59]

Thanks a bundle for "repairing" author & author_sort! Considering that DNB is the authoritative source for German books, this change helps a lot and saves much work!

The testing version 3.1.5 works fine. (Linux Mint 20.3/Calibre 5.34 here.)

Note: DNB usually delivers a more "complete" author name than other sources, like Carsten Sebastian Henn instead of just Carsten Henn, so you might still want to edit some author’s names in order to avoid duplicates in your library.

[Wiggo]

Thank you so much for quick response, citronalco!

It works like a charme and saves me a lot of work.

P.S.: I joined patreon