67 lines
1.8 KiB
C++
67 lines
1.8 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_stmt_id.h"
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#include "share/ob_i_sql_expression.h"
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#include "sql/engine/ob_physical_plan_ctx.h"
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#include "sql/engine/ob_exec_context.h"
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namespace oceanbase
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{
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namespace sql
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{
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ObExprStmtId::ObExprStmtId(common::ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_STMT_ID, "stmt_id", 0, NOT_ROW_DIMENSION,
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INTERNAL_IN_MYSQL_MODE, INTERNAL_IN_ORACLE_MODE)
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{
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}
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int ObExprStmtId::calc_result_type0(ObExprResType &type,
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ObExprTypeCtx &type_ctx) const
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{
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UNUSED(type_ctx);
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type.set_int();
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return OB_SUCCESS;
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}
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int ObExprStmtId::eval_stmt_id(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res)
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{
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int ret = OB_SUCCESS;
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UNUSED(expr);
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ObPhysicalPlanCtx *plan_ctx = ctx.exec_ctx_.get_physical_plan_ctx();
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if (OB_ISNULL(plan_ctx)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("plan_ctx is null", K(ret));
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} else {
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res.set_int(plan_ctx->get_cur_stmt_id());
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}
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return ret;
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}
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int ObExprStmtId::cg_expr(ObExprCGCtx &expr_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(expr_cg_ctx);
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UNUSED(raw_expr);
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rt_expr.eval_func_ = eval_stmt_id;
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return ret;
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}
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} //end sql
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} //end oceanbase
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