Initial Commit

database/perl/vendor/lib/DBD/Gofer/Policy/rush.pm

@@ -0,0 +1,90 @@
+package DBD::Gofer::Policy::rush;
+
+#   $Id: rush.pm 10087 2007-10-16 12:42:37Z Tim $
+#
+#   Copyright (c) 2007, Tim Bunce, Ireland
+#
+#   You may distribute under the terms of either the GNU General Public
+#   License or the Artistic License, as specified in the Perl README file.
+
+use strict;
+use warnings;
+
+our $VERSION = "0.010088";
+
+use base qw(DBD::Gofer::Policy::Base);
+
+__PACKAGE__->create_policy_subs({
+
+    # always use connect_cached on server
+    connect_method => 'connect_cached',
+
+    # use same methods on server as is called on client
+    # (because code not using placeholders would bloat the sth cache)
+    prepare_method => '',
+
+    # Skipping the connect check is fast, but it also skips
+    # fetching the remote dbh attributes!
+    # Make sure that your application doesn't need access to dbh attributes.
+    skip_connect_check => 1,
+
+    # most code doesn't rely on sth attributes being set after prepare
+    skip_prepare_check => 1,
+
+    # we're happy to use local method if that's the same as the remote
+    skip_default_methods => 1,
+
+    # ping is almost meaningless for DBD::Gofer and most transports anyway
+    skip_ping => 1,
+
+    # don't update dbh attributes at all
+    # XXX actually we currently need dbh_attribute_update for skip_default_methods to work
+    # and skip_default_methods is more valuable to us than the cost of dbh_attribute_update
+    dbh_attribute_update => 'none', # actually means 'first' currently
+    #dbh_attribute_list => undef,
+
+    # we'd like to set locally_* but can't because drivers differ
+
+    # in a rush assume metadata doesn't change
+    cache_tables => 1,
+    cache_table_info => 1,
+    cache_column_info => 1,
+    cache_primary_key_info => 1,
+    cache_foreign_key_info => 1,
+    cache_statistics_info => 1,
+    cache_get_info => 1,
+});
+
+
+1;
+
+=head1 NAME
+
+DBD::Gofer::Policy::rush - The 'rush' policy for DBD::Gofer
+
+=head1 SYNOPSIS
+
+  $dbh = DBI->connect("dbi:Gofer:transport=...;policy=rush", ...)
+
+=head1 DESCRIPTION
+
+The C<rush> policy tries to make as few round-trips as possible.
+It's the opposite end of the policy spectrum to the C<pedantic> policy.
+
+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.
+
+=head1 AUTHOR
+
+Tim Bunce, L<http://www.tim.bunce.name>
+
+=head1 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 L<perlartistic>.
+
+=cut
+