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src/sql/optimizer/ob_log_link.h

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+/**
+ * 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 OCEANBASE_SQL_OB_LOG_LINK_H
+#define OCEANBASE_SQL_OB_LOG_LINK_H
+
+#include "sql/optimizer/ob_logical_operator.h"
+
+namespace oceanbase {
+namespace sql {
+
+typedef common::ObIArray<common::ObString> ObStringIArray;
+
+class ObLogLink : public ObLogicalOperator {
+  public:
+  ObLogLink(ObLogPlan& plan);
+  virtual ~ObLogLink()
+  {}
+  virtual int copy_without_child(ObLogicalOperator*& out);
+  virtual int print_my_plan_annotation(char* buf, int64_t& buf_len, int64_t& pos, ExplainType type);
+
+  virtual int allocate_exchange_post(AllocExchContext* ctx) override;
+  virtual int generate_link_sql_pre(GenLinkStmtContext& link_ctx) override;
+
+  int gen_link_stmt_fmt();
+  int assign_param_infos(const common::ObIArray<ObParamPosIdx>& param_infos);
+  int assign_stmt_fmt(const char* stmt_fmt_buf, int32_t stmt_fmt_len);
+  inline const common::ObIArray<ObParamPosIdx>& get_param_infos() const
+  {
+    return param_infos_;
+  }
+  inline const char* get_stmt_fmt_buf() const
+  {
+    return stmt_fmt_buf_;
+  }
+  inline int32_t get_stmt_fmt_len() const
+  {
+    return stmt_fmt_len_;
+  }
+
+  private:
+  int gen_link_stmt_fmt_buf();
+  int gen_link_stmt_param_infos();
+
+  private:
+  common::ObIAllocator& allocator_;
+  ObLinkStmt link_stmt_;
+  char* stmt_fmt_buf_;
+  int32_t stmt_fmt_buf_len_;
+  int32_t stmt_fmt_len_;
+  common::ObSEArray<ObParamPosIdx, 16> param_infos_;
+};
+
+}  // namespace sql
+}  // namespace oceanbase
+
+#endif  // OCEANBASE_SQL_OB_LOG_LINK_H