patch 4.0

src/sql/resolver/ddl/ob_lock_table_resolver.h

@@ -0,0 +1,54 @@
+/**
+ * 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_RESOLVER_DML_OB_LOCK_TABLE_RESOLVER_
+#define OCEANBASE_SQL_RESOLVER_DML_OB_LOCK_TABLE_RESOLVER_
+
+#include "sql/resolver/ddl/ob_lock_table_stmt.h"
+#include "sql/resolver/ddl/ob_ddl_resolver.h"
+
+namespace oceanbase
+{
+namespace sql
+{
+
+class ObLockTableStmt;
+
+// NOTE: yanyuan.cxf LOCK TABLE is dml at oracle, but it does not have
+// SQL plan, so we treat it as ddl operator.
+class ObLockTableResolver : public ObDDLResolver
+{
+public:
+  static const int64_t TABLE = 0;         /* 0. table node */
+  static const int64_t LOCK_MODE = 1;     /* 1. lock mode node */
+  static const int64_t WAIT_NODE = 2;     /* 2. wait node?  */
+public:
+  explicit ObLockTableResolver(ObResolverParams &params)
+    : ObDDLResolver(params)
+    {}
+  virtual ~ObLockTableResolver()
+    {}
+  virtual int resolve(const ParseNode &parse_tree);
+  inline ObLockTableStmt *get_lock_table_stmt() { return static_cast<ObLockTableStmt*>(stmt_); }
+private:
+  int resolve_mysql_mode(const ParseNode &parse_tree);
+  int resolve_oracle_mode(const ParseNode &parse_tree);
+  int resolve_table_relation_node(const ParseNode &parse_tree);
+  int resolve_lock_mode(const ParseNode &parse_tree);
+
+  DISALLOW_COPY_AND_ASSIGN(ObLockTableResolver);
+};
+
+} // namespace sql
+} // namespace oceanbase
+
+#endif // OCEANBASE_SQL_RESOLVER_DML_OB_LOCK_TABLE_RESOLVER_