71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
/*
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This file is part of SECONDO.
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Copyright (C) 2011, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO 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; either version 2 of the License, or
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(at your option) any later version.
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SECONDO 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 SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "CELLS.h"
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#include "../util/parse_error.h"
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#include "../util/types.h"
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#include <NestedList.h>
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#include <Operator.h>
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namespace raster2
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{
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ListExpr cellsTypeMap(ListExpr args)
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{
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NList types = args;
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std::string attribute_type_name;
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try {
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std::ostringstream oss;
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if (types.length() < 1) {
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throw util::parse_error("CELLS expects at least one argument.");
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}
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std::string raster_type = types.first().convertToString();
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if (!(util::isSType(raster_type) || util::isMSType(raster_type))) {
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throw util::parse_error(
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"CELLS expects sT or msT as first argument, got " + raster_type + "."
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);
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}
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attribute_type_name = util::getValueBasicType(raster_type);
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if (attribute_type_name.empty()) {
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throw util::parse_error(
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"CELLS cannot determine value type of " + raster_type + "."
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);
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}
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} catch (util::parse_error& e) {
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return NList::typeError(e.what());
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}
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return NList(
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NList("rel"),
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NList(
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NList("tuple"),
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NList(NList("Elem"), NList(attribute_type_name)).enclose()
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)
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).listExpr();
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}
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}
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