83 lines
2.4 KiB
C++
83 lines
2.4 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 "sql/engine/expr/ob_expr_time_to_usec.h"
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#include "lib/time/ob_time_utility.h"
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#include "lib/ob_name_def.h"
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#include "sql/session/ob_sql_session_info.h"
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namespace oceanbase
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{
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using namespace common;
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namespace sql
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{
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ObExprTimeToUsec::ObExprTimeToUsec(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_TIME_TO_USEC, N_TIME_TO_USEC, 1, VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{}
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ObExprTimeToUsec::~ObExprTimeToUsec()
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{
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}
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int ObExprTimeToUsec::calc_result_type1(ObExprResType &type,
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ObExprResType &date,
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common::ObExprTypeCtx &type_ctx) const
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{
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UNUSED(type_ctx);
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int ret = common::OB_SUCCESS;
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if (OB_UNLIKELY(!date.is_varchar()
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&& !date.is_temporal_type()
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&& !date.is_null())) {
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ret = common::OB_INVALID_ARGUMENT_FOR_TIME_TO_USEC;
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LOG_WARN("invalid type", K(date.get_type()));
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} else {
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type.set_int();
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type.set_precision(ObAccuracy::DDL_DEFAULT_ACCURACY[ObIntType].precision_);
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type.set_scale(ObAccuracy::DDL_DEFAULT_ACCURACY[ObIntType].scale_);
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//set calc type
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date.set_calc_type(ObTimestampType);
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}
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return ret;
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}
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int calc_time_to_usec_expr(const ObExpr &expr, ObEvalCtx &ctx,
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ObDatum &res_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *arg_datum = NULL;
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if (OB_FAIL(expr.args_[0]->eval(ctx, arg_datum))) {
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LOG_WARN("eval arg failed", K(ret));
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} else if (arg_datum->is_null()) {
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res_datum.set_null();
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} else {
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res_datum.set_int(arg_datum->get_timestamp());
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}
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return ret;
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}
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int ObExprTimeToUsec::cg_expr(ObExprCGCtx &expr_cg_ctx, 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(expr_cg_ctx);
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UNUSED(raw_expr);
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rt_expr.eval_func_ = calc_time_to_usec_expr;
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return ret;
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}
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}
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}
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