bug when loading Lexicons via LexicalResource: single Lexicon returned

[judithek]

SH: Running the following snippet on a 070-snapshot DB shows that the loading of Lexicon instances via LexicalResource does not work properly:

Uby uby = new Uby(dbConfig);
LexicalResource lexicalResource = uby.getLexicalResource("UBY");
System.err.println(lexicalResource.getLexicons().size()); // prints 1 (not expected)
System.err.println(uby.getLexicons().size()); // prints the correct number of lexicons (expected outcome)

Note that all lexicons are associated with the LexicalResource in the DB (lexicalResourceId="UBY").

Maybe some issue with the hibernate api/hibernate mappings?

ChM: Looked into that. The lexicons of a lexical resource are mapped as a list (i.e., a collection with a specific order as determined by the "idx" column). In the public UBY databases, this idx is 0 for all lexicons. Hibernate thus conflates all lexicons into one. For the upcoming release, we should make sure that the lexicons indexes are set incrementally during the database post-processing.

In later releases, we should change to mapping from list to set or bag, since the idx column is not really required. Actually, having a natural index for a lexicon does not make sense IMHO.