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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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# 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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# 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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# 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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package GenTest::Transform::LimitDecrease;
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@ISA = qw(GenTest GenTest::Transform);
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use GenTest::Transform;
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use GenTest::Constants;
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my ($class, $orig_query) = @_;
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return STATUS_WONT_HANDLE if $orig_query =~ m{OFFSET}sio;
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if (my ($orig_limit) = $orig_query =~ m{LIMIT (\d+)}sio) {
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return STATUS_WONT_HANDLE if $orig_limit == 0;
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$orig_query =~ s{LIMIT \d+}{LIMIT 1}sio;
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$orig_query .= " LIMIT 1 ";
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if ($orig_query =~ m{TOTAL_ORDERING}sio) {
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return $orig_query." /* TRANSFORM_OUTCOME_FIRST_ROW */";
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return $orig_query." /* TRANSFORM_OUTCOME_SINGLE_ROW */";