57 lines
1.9 KiB
C++
57 lines
1.9 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 SQL_ENGINE_EXPR_OB_EXPR_SHADOW_UK_PROJECT_H_
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#define SQL_ENGINE_EXPR_OB_EXPR_SHADOW_UK_PROJECT_H_
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#include "sql/engine/expr/ob_expr_operator.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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class ObExprShadowUKProject : public ObExprOperator
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{
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public:
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ObExprShadowUKProject(common::ObIAllocator &alloc)
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: ObExprOperator(alloc, T_OP_SHADOW_UK_PROJECT, N_SHADOW_UK_PROJECTOR, MORE_THAN_ONE, VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION, INTERNAL_IN_MYSQL_MODE)
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{
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}
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virtual ~ObExprShadowUKProject()
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{
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}
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virtual int calc_result_typeN(ObExprResType &type,
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ObExprResType *types,
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int64_t param_num,
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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_ISNULL(types) || OB_UNLIKELY(param_num <= 1)) {
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ret = common::OB_INVALID_ARGUMENT;
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SQL_ENG_LOG(WARN, "invalid argument", K(types), K(param_num));
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} else {
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type = types[param_num - 1];
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}
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return ret;
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}
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virtual int cg_expr(ObExprCGCtx &ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int shadow_uk_project(const ObExpr &expr,
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ObEvalCtx &ctx,
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ObDatum &datum);
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};
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} // namespace sql
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} // namespace oceanbase
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#endif /* SQL_ENGINE_EXPR_OB_EXPR_SHADOW_UK_PROJECT_H_ */
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