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https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
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68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU 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 Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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// $Id: framebound.cpp 3828 2013-05-22 17:58:14Z xlou $
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// #define NDEBUG
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#include <cmath>
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#include <sstream>
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using namespace std;
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#include "idborderby.h"
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using namespace ordering;
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#include "framebound.h"
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namespace windowfunction
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{
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int64_t FrameBound::getBound(int64_t b, int64_t e, int64_t c)
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{
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if (fBoundType == WF__UNBOUNDED_PRECEDING)
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return b;
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return e;
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}
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const string FrameBound::toString() const
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{
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ostringstream oss;
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switch (fBoundType)
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{
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case WF__UNBOUNDED_PRECEDING: oss << "unbound preceding"; break;
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case WF__UNBOUNDED_FOLLOWING: oss << "unbound following"; break;
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case WF__CONSTANT_PRECEDING: oss << "constant preceding"; break;
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case WF__CONSTANT_FOLLOWING: oss << "constant following"; break;
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case WF__EXPRESSION_PRECEDING: oss << "expression preceding"; break;
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case WF__EXPRESSION_FOLLOWING: oss << "expression following"; break;
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case WF__CURRENT_ROW:
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default: oss << "current row"; break;
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}
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oss << endl;
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return oss.str();
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}
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} // namespace windowfunction
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