An exception hierarchy corresponding to SQLSTATE codes from the SQL Standard.
Most SQL platforms can return their error codes in the form of an SQLSTATE; this library ensures differing database drivers can all throw the same errors.
A common library reduces the temptation, when writing a database driver, to simply throw all possible errors using a single generic exception.
The primary intended audience is authors of database drivers; other users only interaction with this library should be in catching its exceptions.
Exception hierarchy that maps to a good portion of the Standard's SQLSTATE codes
Ability to extend the hierarchy for a database platform, mixing vendor codes with Standard ones
Vendor-specific exception hierarchies for
require 'sqlstate' raise SqlState.create('22012') # Division By Zero require 'sqlstate/postgres' ex = SqlState::PostgresError.create('08P01') # Protocol Violation ex.hint = 'Try doing the right thing.' raise ex
[sudo] gem install sqlstate
(The MIT License)
Copyright © 2009 Matthew Draper
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