Current File : /home/rs/ruby/1.8/lib/ruby/site_ruby/1.8/dbi/exceptions.rb
module DBI
# Exceptions (borrowed by Python API 2.0)
# Base class of all other error exceptions. Use this to catch all DBI
# errors.
class Error < RuntimeError
end
# For important warnings like data truncation, etc.
class Warning < RuntimeError
end
# Exception for errors related to the DBI interface rather than the
# database itself.
class InterfaceError < Error
end
# Exception raised if the DBD driver has not specified a mandatory method.
class NotImplementedError < InterfaceError
end
# Exception for errors related to the database.
class DatabaseError < Error
attr_reader :err, :errstr, :state
def initialize(errstr="", err=nil, state=nil)
super(errstr)
@err, @errstr, @state = err, errstr, state
end
end
# Exception for errors due to problems with the processed
# data such as division by zero, numeric value out of range, etc.
class DataError < DatabaseError
end
# Exception for errors related to the database's operation which are not
# necessarily under the control of the programmer. This includes such
# things as unexpected disconnect, datasource name not found, transaction
# could not be processed, a memory allocation error occured during
# processing, etc.
class OperationalError < DatabaseError
end
# Exception raised when the relational integrity of the database
# is affected, e.g. a foreign key check fails.
class IntegrityError < DatabaseError
end
# Exception raised when the database encounters an internal error,
# e.g. the cursor is not valid anymore, the transaction is out of sync.
class InternalError < DatabaseError
end
# Exception raised for programming errors, e.g. table not found
# or already exists, syntax error in SQL statement, wrong number
# of parameters specified, etc.
class ProgrammingError < DatabaseError
end
# Exception raised if e.g. commit() is called for a database which do not
# support transactions.
class NotSupportedError < DatabaseError
end
end
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