I think Amazon was one, though at this point use of Amazon is not really encouraged. Syndetics may be another, but I’m not 100% sure on that.
From: Joe Atzberger [mailto:email@example.com]
Sent: Wednesday, September 25, 2013 12:42 PM
To: Demian Katz
Cc: vufind-tech Tech
Subject: Re: [VuFind-Tech] getCleanISBN logic
That makes some sense. It would be good to know what those APIs are, since presumably everyone will (eventually) be moving towards a 13-digit basis.
For our purposes, we already establish via pre-processing which ISBN we want to use for enhanced content matching (and move it to the front of the array), so getCleanISBN skipping over to the first 10-digit value was a surprise.
On Tue, Sep 24, 2013 at 10:26 PM, Demian Katz <firstname.lastname@example.org> wrote:
Several of the APIs VuFind uses only work correctly with 10-digit ISBNs (perhaps this has changed by now, but it at least used to be the case), and it's always possible to
convert a 10-digit ISBN to a 13-digit ISBN if necessary, while the reverse is not always possible. Thus, if a 10-digit ISBN is available, and assuming all other things are equal, it's preferable to a 13-digit ISBN since it offers the widest range of compatibility.
From: Joe Atzberger [email@example.com]
Sent: Tuesday, September 24, 2013 5:23 PM
To: vufind-tech Tech
Subject: [VuFind-Tech] getCleanISBN logic
What is the rationale behind getCleanISBN()'s preference for 10-digit ISBNs?