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/******************************************************************************
*
* Component: OGR SQL Engine
* Purpose: Implementation of the swq_op_registrar class used to
* represent operations possible in an SQL expression.
* Author: Frank Warmerdam <warmerdam@pobox.com>
*
******************************************************************************
* Copyright (C) 2010 Frank Warmerdam <warmerdam@pobox.com>
* Copyright (c) 2010-2013, Even Rouault <even dot rouault at spatialys.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "cpl_port.h"
#include "ogr_swq.h"
#include <cstddef>
#include "cpl_conv.h"
#include "cpl_error.h"
//! @cond Doxygen_Suppress
static swq_field_type
SWQColumnFuncChecker(swq_expr_node *poNode,
int bAllowMismatchTypeOnFieldComparison);
static const swq_operation swq_apsOperations[] = {
{"OR", SWQ_OR, SWQGeneralEvaluator, SWQGeneralChecker},
{"AND", SWQ_AND, SWQGeneralEvaluator, SWQGeneralChecker},
{"NOT", SWQ_NOT, SWQGeneralEvaluator, SWQGeneralChecker},
{"=", SWQ_EQ, SWQGeneralEvaluator, SWQGeneralChecker},
{"<>", SWQ_NE, SWQGeneralEvaluator, SWQGeneralChecker},
{">=", SWQ_GE, SWQGeneralEvaluator, SWQGeneralChecker},
{"<=", SWQ_LE, SWQGeneralEvaluator, SWQGeneralChecker},
{"<", SWQ_LT, SWQGeneralEvaluator, SWQGeneralChecker},
{">", SWQ_GT, SWQGeneralEvaluator, SWQGeneralChecker},
{"LIKE", SWQ_LIKE, SWQGeneralEvaluator, SWQGeneralChecker},
{"ILIKE", SWQ_ILIKE, SWQGeneralEvaluator, SWQGeneralChecker},
{"IS NULL", SWQ_ISNULL, SWQGeneralEvaluator, SWQGeneralChecker},
{"IN", SWQ_IN, SWQGeneralEvaluator, SWQGeneralChecker},
{"BETWEEN", SWQ_BETWEEN, SWQGeneralEvaluator, SWQGeneralChecker},
{"+", SWQ_ADD, SWQGeneralEvaluator, SWQGeneralChecker},
{"-", SWQ_SUBTRACT, SWQGeneralEvaluator, SWQGeneralChecker},
{"*", SWQ_MULTIPLY, SWQGeneralEvaluator, SWQGeneralChecker},
{"/", SWQ_DIVIDE, SWQGeneralEvaluator, SWQGeneralChecker},
{"%", SWQ_MODULUS, SWQGeneralEvaluator, SWQGeneralChecker},
{"CONCAT", SWQ_CONCAT, SWQGeneralEvaluator, SWQGeneralChecker},
{"SUBSTR", SWQ_SUBSTR, SWQGeneralEvaluator, SWQGeneralChecker},
{"HSTORE_GET_VALUE", SWQ_HSTORE_GET_VALUE, SWQGeneralEvaluator,
SWQGeneralChecker},
{"AVG", SWQ_AVG, SWQGeneralEvaluator, SWQColumnFuncChecker},
{"MIN", SWQ_MIN, SWQGeneralEvaluator, SWQColumnFuncChecker},
{"MAX", SWQ_MAX, SWQGeneralEvaluator, SWQColumnFuncChecker},
{"COUNT", SWQ_COUNT, SWQGeneralEvaluator, SWQColumnFuncChecker},
{"SUM", SWQ_SUM, SWQGeneralEvaluator, SWQColumnFuncChecker},
{"CAST", SWQ_CAST, SWQCastEvaluator, SWQCastChecker}};
/************************************************************************/
/* GetOperator() */
/************************************************************************/
const swq_operation *swq_op_registrar::GetOperator(const char *pszName)
{
for (const auto &op : swq_apsOperations)
{
if (EQUAL(pszName, op.pszName))
return &op;
}
return nullptr;
}
/************************************************************************/
/* GetOperator() */
/************************************************************************/
const swq_operation *swq_op_registrar::GetOperator(swq_op eOperator)
{
for (const auto &op : swq_apsOperations)
{
if (eOperator == op.eOperation)
return &op;
}
return nullptr;
}
/************************************************************************/
/* SWQColumnFuncChecker() */
/* */
/* Column summary functions are not legal in any context except */
/* as a root operator on column definitions. They are removed */
/* from this tree before checking so we just need to issue an */
/* error if they are used in any other context. */
/************************************************************************/
static swq_field_type
SWQColumnFuncChecker(swq_expr_node *poNode,
int /* bAllowMismatchTypeOnFieldComparison */)
{
const swq_operation *poOp =
swq_op_registrar::GetOperator(static_cast<swq_op>(poNode->nOperation));
CPLError(CE_Failure, CPLE_AppDefined,
"Column Summary Function '%s' found in an inappropriate context.",
poOp != nullptr ? poOp->pszName : "");
return SWQ_ERROR;
}
//! @endcond
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