61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX SQL_ENG
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#include <string.h>
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#include "objit/common/ob_item_type.h"
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#include "sql/engine/expr/ob_expr_lnnvl.h"
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#include "share/object/ob_obj_cast.h"
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//#include "sql/engine/expr/ob_expr_promotion_util.h"
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using namespace oceanbase::common;
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using namespace oceanbase::sql;
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namespace oceanbase
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{
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namespace sql
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{
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}
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}
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ObExprFuncLnnvl::ObExprFuncLnnvl(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_LNNVL, N_LNNVL, 1, NOT_ROW_DIMENSION)
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{
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}
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ObExprFuncLnnvl::~ObExprFuncLnnvl()
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{
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}
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int ObExprFuncLnnvl::cg_expr(ObExprCGCtx &, const ObRawExpr &, ObExpr &rt_expr) const
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{
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int ret = OB_SUCCESS;
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CK(1 == rt_expr.arg_cnt_);
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rt_expr.eval_func_ = eval_lnnvl;
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return ret;
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}
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int ObExprFuncLnnvl::eval_lnnvl(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *arg = NULL;
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if (OB_FAIL(expr.eval_param_value(ctx, arg))) {
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LOG_WARN("evaluate parameters failed", K(ret));
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} else if (arg->is_null()) {
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expr_datum.set_bool(true);
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} else {
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expr_datum.set_bool(!arg->get_tinyint());
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}
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return ret;
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}
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