90894fc6ba
Co-authored-by: yaojing624 <jingfeng.jf@oceanbase.com> Co-authored-by: GongYusen <986957406@qq.com>
62 lines
2.6 KiB
C++
62 lines
2.6 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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#ifndef OCEANBASE_SQL_ENGINE_DECODE_TRACE_ID_
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#define OCEANBASE_SQL_ENGINE_DECODE_TRACE_ID_
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#include "sql/engine/expr/ob_expr_operator.h"
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#define MAX_DECODE_TRACE_ID_RES_LEN 128 // max string buffer length
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namespace oceanbase {
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namespace sql {
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class ObExprDecodeTraceId : public ObFuncExprOperator {
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public:
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explicit ObExprDecodeTraceId(common::ObIAllocator &alloc);
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virtual ~ObExprDecodeTraceId();
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virtual int calc_result_type1(ObExprResType &type, ObExprResType &trace_id,
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common::ObExprTypeCtx &type_ctx) const;
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static int calc_decode_trace_id_expr(const ObExpr &expr, ObEvalCtx &ctx,
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ObDatum &res_datum);
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static int calc_decode_trace_id_expr_batch(const ObExpr &expr, ObEvalCtx &ctx,
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const ObBitVector &skip,
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const int64_t batch_size);
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virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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template <typename T>
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static int calc_one_row(const ObExpr &expr, ObEvalCtx &ctx, const T ¶m, T &res)
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{
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int ret = OB_SUCCESS;
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ObCurTraceId::TraceId trace_id;
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int32_t len = 0;
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char *buf = expr.get_str_res_mem(ctx, MAX_DECODE_TRACE_ID_RES_LEN);
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ObString trace_id_str = param.get_string();
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if (OB_ISNULL(buf)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("allocate string res buf failed", K(ret));
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} else if (trace_id_str.empty()) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid trace id string", K(ret));
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} else if (OB_FAIL(trace_id.parse_from_buf(trace_id_str.ptr()))) {
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LOG_WARN("parse trace_id failed", K(ret));
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} else if (OB_FAIL(trace_id.get_addr().addr_to_buffer(buf, MAX_DECODE_TRACE_ID_RES_LEN, len))) {
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SQL_ENG_LOG(WARN, "fail to databuff_printf", K(ret));
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} else {
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res.set_string(buf, len);
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}
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return ret;
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprDecodeTraceId);
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};
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} // namespace sql
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} // namespace oceanbase
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#endif /* OCEANBASE_SQL_ENGINE_DECODE_TRACE_ID_ */
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