03-26-2012
Many Thanks to all. It is workine fine.
![Smilie Smilie](https://www.unix.com/images/smilies/smile.gif)
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LEARN ABOUT DEBIAN
dbd::gofer::policy::base
DBD::Gofer::Policy::Base(3pm) User Contributed Perl Documentation DBD::Gofer::Policy::Base(3pm)
NAME
DBD::Gofer::Policy::Base - Base class for DBD::Gofer policies
SYNOPSIS
$dbh = DBI->connect("dbi:Gofer:transport=...;policy=...", ...)
DESCRIPTION
DBD::Gofer can be configured via a 'policy' mechanism that allows you to fine-tune the number of round-trips to the Gofer server. The
policies are grouped into classes (which may be subclassed) and referenced by the name of the class.
The DBD::Gofer::Policy::Base class is the base class for all the policy classes and describes all the individual policy items.
The Base policy is not used directly. You should use a policy class derived from it.
POLICY CLASSES
Three policy classes are supplied with DBD::Gofer:
DBD::Gofer::Policy::pedantic is most 'transparent' but slowest because it makes more round-trips to the Gofer server.
DBD::Gofer::Policy::classic is a reasonable compromise - it's the default policy.
DBD::Gofer::Policy::rush is fastest, but may require code changes in your applications.
Generally the default "classic" policy is fine. When first testing an existing application with Gofer it is a good idea to start with the
"pedantic" policy first and then switch to "classic" or a custom policy, for final testing.
POLICY ITEMS
These are temporary docs: See the source code for list of policies and their defaults.
In a future version the policies and their defaults will be defined in the pod and parsed out at load-time.
See the source code to this module for more details.
POLICY CUSTOMIZATION
XXX This area of DBD::Gofer is subject to change.
There are three ways to customize policies:
Policy classes are designed to influence the overall behaviour of DBD::Gofer with existing, unaltered programs, so they work in a
reasonably optimal way without requiring code changes. You can implement new policy classes as subclasses of existing policies.
In many cases individual policy items can be overridden on a case-by-case basis within your application code. You do this by passing a
corresponding "<go_<policy_name">> attribute into DBI methods by your application code. This let's you fine-tune the behaviour for special
cases.
The policy items are implemented as methods. In many cases the methods are passed parameters relating to the DBD::Gofer code being
executed. This means the policy can implement dynamic behaviour that varies depending on the particular circumstances, such as the
particular statement being executed.
AUTHOR
Tim Bunce, <http://www.tim.bunce.name>
LICENCE AND COPYRIGHT
Copyright (c) 2007, Tim Bunce, Ireland. All rights reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.
perl v5.14.2 2007-10-16 DBD::Gofer::Policy::Base(3pm)