patch 4.0

src/sql/engine/expr/ob_expr_get_package_var.h

@@ -0,0 +1,61 @@
+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#ifndef _OB_EXPR_GET_PACKAGE_VAR_H
+#define _OB_EXPR_GET_PACKAGE_VAR_H 1
+
+namespace oceanbase
+{
+}
+
+#endif /* _OB_EXPR_GET_PACKAGE_VAR_H */
+
+// Copyright 2014-2017 Alibaba Inc. All Rights Reserved.
+// Author:
+#ifndef SRC_SQL_ENGINE_EXPR_OB_EXPR_GET_PACKAGE_VAR_H_
+#define SRC_SQL_ENGINE_EXPR_OB_EXPR_GET_PACKAGE_VAR_H_
+#include "lib/ob_name_def.h"
+#include "sql/engine/expr/ob_expr_operator.h"
+#include "sql/session/ob_sql_session_info.h"
+
+namespace oceanbase
+{
+namespace sql
+{
+class ObExprGetPackageVar : public ObFuncExprOperator
+{
+public:
+  explicit ObExprGetPackageVar(common::ObIAllocator &alloc)
+  : ObFuncExprOperator(alloc, T_OP_GET_PACKAGE_VAR, N_GET_PACKAGE_VAR, PARAM_NUM_UNKNOWN, NOT_ROW_DIMENSION, INTERNAL_IN_MYSQL_MODE) {}
+
+  virtual int calc_result_typeN(ObExprResType &type,
+                                ObExprResType *types_stack,
+                                int64_t param_num,
+                                ObExprTypeCtx &type_ctx) const;
+
+  static int eval_get_package_var(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
+  virtual int cg_expr(ObExprCGCtx &ctx, const ObRawExpr &raw_expr,
+                      ObExpr &rt_expr) const override;
+private:
+  static int calc(common::ObObj &result,
+                  uint64_t package_id,
+                  int64_t spec_version,
+                  int64_t body_version,
+                  int64_t var_idx,
+                  ObExecContext *exec_ctx,
+                  ObSQLSessionInfo *session_info);
+  // disallow copy
+  DISALLOW_COPY_AND_ASSIGN(ObExprGetPackageVar);
+};
+} //end namespace sql
+} //end namespace oceanbase
+#endif /* SRC_SQL_ENGINE_EXPR_OB_EXPR_GET_PACKAGE_VAR_H_ */