oai-pmh.md

@@ -58,6 +58,32 @@ For the element langstring the attribute xml:lang is used.
 ```
 > Hint: The repository has to ensure that the language code corresponds to the text of the element!
 
+## Vocabs
+### Creativ Commons
+```xml
+<lom:description>
+<lom:langstring xml:lang="x-t-cc-url">https://creativecommons.org/licenses/by-sa/4.0</lom:langstring>
+</lom:description>
+```
+This uri is expected https://creativecommons.org/licenses/by-sa/4.0 and following the link shows the details of the license. 
+
+The ingester expects *https://creativecommons.org/licenses/* as an example for the RegExp 
+
+```perl
+$linkCC =~ /^https\:\/\/creativecommons.org\/licenses\/(.*)/ )
+```
+There is no short *CC* in the link. It is added by the ingester.
+
+### ÖFOS
+The expected part of the source uri ends with */vocabs/oefos2012*
+```perl
+if ( $taxonPath->{source} =~ /(.*)\/vocabs\/oefos2012$/ ) {
+```
+To get the Oefos ID the uri has */vocabs/oefos2012* and the id at the end 
+```perl
+if ( ($prefixurl, $number) = $id =~ /(.*)\/vocabs\/oefos2012\/(.*)/ ) {
+```
+
 ## Links
 - https://www.openarchives.org/
 - https://metacpan.org/pod/Net::OAI::Harvester