PGconn subclass for connection specific methods used with the pg, postgres, or postgres-pr driver.
The underlying exception classes to reraise as disconnect errors instead of regular database errors.
Since exception class based disconnect checking may not work, also trying parsing the exception message to look for disconnect errors.
Raise a Sequel::DatabaseDisconnectError if a one of the disconnect error classes is raised, or a PGError is raised and the connection status cannot be determined or it is not OK.
# File lib/sequel/adapters/postgres.rb, line 141 def check_disconnect_errors begin yield rescue *DISCONNECT_ERROR_CLASSES => e disconnect = true raise(Sequel.convert_exception_class(e, Sequel::DatabaseDisconnectError)) rescue PGError => e disconnect = false begin s = status rescue PGError disconnect = true end status_ok = (s == Adapter::CONNECTION_OK) disconnect ||= !status_ok disconnect ||= e.message =~ DISCONNECT_ERROR_RE disconnect ? raise(Sequel.convert_exception_class(e, Sequel::DatabaseDisconnectError)) : raise ensure block if status_ok && !disconnect end end
Execute the given SQL with this connection. If a block is given, yield the results, otherwise, return the number of changed rows.
# File lib/sequel/adapters/postgres.rb, line 165 def execute(sql, args=nil) args = args.map{|v| @db.bound_variable_arg(v, self)} if args q = check_disconnect_errors{execute_query(sql, args)} begin block_given? ? yield(q) : q.cmd_tuples ensure q.clear if q && q.respond_to?(:clear) end end
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