RAA - criteria

Criteria is a module for abstracting queries to various data sets. For instance, you might have a flat text file, or an array of Ruby objects, or a SQL database, and wish to perform the same query on any given source, without different versions of code for each. Here's a quick example (more on the site):

idx1 = SQLTable.new("orders")
q1 = (idx1.price > idx1.paid) & (idx1.duedate < Time.now.to_i)

puts q1.select

# => SELECT * FROM orders WHERE ((orders.price > orders.paid) AND
# (orders.duedate < 1062616643))

Changes (1.1a): Last minute bugfix, see README.
Changes (1.1): SQL abstraction now includes CREATE TABLE, INSERT, UPDATE, DELETE, and DROP TABLE. Parameterized queries added. FileTable sorting fixed. See ChangeLog for complete details.