78 lines
2.3 KiB
C++
78 lines
2.3 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_sys_extract_utc.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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ObExprSysExtractUtc::ObExprSysExtractUtc(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_SYS_EXTRACT_UTC, N_SYS_EXTRACT_UTC, 1, NOT_ROW_DIMENSION)
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{
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}
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int ObExprSysExtractUtc::calc_result_type1(ObExprResType &type,
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ObExprResType &input,
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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(!input.get_obj_meta().is_otimestamp_type()
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&& !input.is_null())) {
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ret = common::OB_ERR_INVALID_TYPE_FOR_ARGUMENT;
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LOG_WARN("invalid type", K(input.get_type()));
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} else {
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type.set_timestamp_nano();
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type.set_scale(input.get_scale());
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input.set_calc_type(ObTimestampTZType);
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}
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return ret;
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}
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int ObExprSysExtractUtc::calc_sys_extract_utc(const ObExpr &expr, ObEvalCtx &ctx,
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ObDatum &res)
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{
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int ret = OB_SUCCESS;
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ObDatum *in = NULL;
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if (OB_FAIL(expr.eval_param_value(ctx, in))) {
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LOG_WARN("eval param failed", K(ret));
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} else if (in->is_null()) {
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res.set_null();
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} else {
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ObOTimestampData in_timestamp = in->get_otimestamp_tz();
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in_timestamp.time_ctx_.tz_desc_ = 0;
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in_timestamp.time_ctx_.store_tz_id_ = 0;
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res.set_otimestamp_tiny(in_timestamp);
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}
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return ret;
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}
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int ObExprSysExtractUtc::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_sys_extract_utc;
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return ret;
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}
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}
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}
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