A Database Function to Return ISBN13

[Jason Stephenson]

As mentioned in IRC yesterday (http://irc.evergreen-ils.org/evergreen/2016-03-30#i_239409), I have a use case for a database function to return the ISBN13 from its input in the database.

My use case involves dumping data for Novelist's On The Shelf product where they specifically ask for the unique combination of ISBN13 and copy barcode. Pulling the ISBN13 in the database allows one to distinct on the field and to skip records where the data in the ISBN is invalid or cannot be converted to ISBN13.

A branch to create the evergreen.isbn13(text) function will be forthcoming.

[Jason Stephenson (jstephenson)]

Branch in working: user/dyrcona/lp1564402-evergreen-isbn13-function

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/dyrcona/lp1564402-evergreen-isbn13-function

Complete with release notes and pgtap tests.

[Jason Stephenson (jstephenson)]

Setting this bug to invalid and removing the pull request tag.

I forgot about public.force_to_isbn13 that already does what my "new" function does.