[Isobel-development] long URIs

[Agea <ag...@li...>]

Using Isobel to fetch a database, URIs containing queries can be longer
than 255 characters.

Mapping the URI fields with type="string" in Hibernate mapping files
will result in a VARCHAR(255) column in most databases.

Besides in most cases 255 characters will last for normal URIs, and you
can't build indexes on TEXT fields in most databases.

We should warn the users of DB Fetchers to change the mapping files of
hibernate.

Agea