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Viewing changes to tests/kewpie/randgen/lib/GenTest/Transform/InlineSubqueries.pm

  • Committer: Package Import Robot
  • Author(s): Clint Byrum
  • Date: 2012-06-19 10:46:49 UTC
  • mfrom: (1.1.6)
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20120619104649-e2l0ggd4oz3um0f4
Tags: upstream-7.1.36-stable
Import upstream version 7.1.36-stable

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tests/kewpie/randgen/lib/GenTest/Transform/InlineSubqueries.pm
 
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# Copyright (C) 2008-2009 Sun Microsystems, Inc. All rights reserved.
 
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# Use is subject to license terms.
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; version 2 of the License.
 
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#
 
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# This program is distributed in the hope that it will be useful, but
 
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# WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 
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# General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
 
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# USA
 
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package GenTest::Transform::InlineSubqueries;
 
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require Exporter;
 
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@ISA = qw(GenTest GenTest::Transform);
 
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use strict;
 
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use lib 'lib';
 
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use GenTest;
 
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use GenTest::Transform;
 
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use GenTest::Constants;
 
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# This is a regexp to match nested brackets, taken from
 
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# here http://www.perlmonks.org/?node_id=547596
 
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my $paren_rx;
 
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$paren_rx = qr{
 
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  (?:
 
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    \((??{$paren_rx})\) # either match another paren-set
 
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    | [^()]+            # or match non-parens (or escaped parens
 
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  )*
 
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}x;
 
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sub transform {
 
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        my ($class, $query, $executor) = @_;
 
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        my $inline_successful = 0;
 
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        $query =~ s{(\(\s*SELECT\s+(??{$paren_rx})\))}{
 
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                my $result = $executor->execute($1, 1);
 
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                if (
 
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                        ($result->status() != STATUS_OK) ||
 
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                        ($result->rows() < 1)
 
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                ) {
 
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                        $1;                             # return original query
 
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                } else {
 
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                        $inline_successful = 1;         # return inlined literals
 
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                        " ( ".join(', ', map {
 
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                                if (not defined $_->[0]) {
 
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                                        "NULL";
 
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                                } elsif ($_->[0] =~ m{^\d+$}sio){
 
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                                        $_->[0];
 
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                                } else {
 
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                                        "'".$_->[0]."'"
 
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                                }
 
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                        } @{$result->data()})." ) ";
 
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                }
 
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        }sgexi;
 
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        my $final_result = $executor->execute($query, 1);
 
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        if (
 
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                ($inline_successful) &&
 
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                ($final_result->status() == STATUS_OK)
 
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        ) {
 
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                return $query." /* TRANSFORM_OUTCOME_UNORDERED_MATCH */";
 
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        } else {
 
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                return STATUS_WONT_HANDLE;
 
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        }
 
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}
 
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1;