63 lines
1.6 KiB
C++
63 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 "ob_expr_date.h"
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#include "lib/timezone/ob_time_convert.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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ObExprDate::ObExprDate(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_DATE, N_DATE, 1, NOT_ROW_DIMENSION)
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{
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}
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ObExprDate::~ObExprDate()
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{
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}
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int ObExprDate::cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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int ret = OB_SUCCESS;
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UNUSED(op_cg_ctx);
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UNUSED(raw_expr);
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rt_expr.eval_func_ = ObExprDate::eval_date;
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return ret;
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}
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int ObExprDate::eval_date(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *param = NULL;
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if (OB_FAIL(expr.args_[0]->eval(ctx, param))) {
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LOG_WARN("fail to eval conv", K(ret), K(expr));
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} else if (param->is_null()) {
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res_datum.set_null();
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} else {
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res_datum.set_date(param->get_date());
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}
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return ret;
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}
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} //namespace sql
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} //namespace oceanbase
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