patch 4.0

src/sql/resolver/ddl/ob_lock_table_resolver.cpp

@@ -0,0 +1,149 @@
+/**
+ * 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.
+ */
+
+#define USING_LOG_PREFIX SQL_RESV
+#include "ob_lock_table_resolver.h"
+#include "ob_lock_table_stmt.h"
+#include "sql/resolver/dml/ob_dml_stmt.h"
+
+namespace oceanbase
+{
+namespace sql
+{
+using namespace common;
+
+int ObLockTableResolver::resolve(const ParseNode &parse_tree)
+{
+  int ret = OB_SUCCESS;
+  ObLockTableStmt *lock_stmt = NULL;
+
+  if (T_LOCK_TABLE != parse_tree.type_) {
+    ret = OB_INVALID_ARGUMENT;
+    LOG_WARN("wrong node type", K(ret), K(parse_tree.type_));
+  } else if (is_mysql_mode()) {
+    ret = resolve_mysql_mode(parse_tree);
+  } else {
+    ret = resolve_oracle_mode(parse_tree);
+  }
+  return ret;
+}
+
+int ObLockTableResolver::resolve_mysql_mode(const ParseNode &parse_tree)
+{
+  // TODO: yanyuan.cxf deal with mysql mode later.
+  int ret = OB_SUCCESS;
+  ObLockTableStmt *lock_stmt = NULL;
+
+  if (OB_ISNULL(lock_stmt = create_stmt<ObLockTableStmt>())) {
+    ret = OB_ALLOCATE_MEMORY_FAILED;
+    LOG_ERROR("create lock stmt failed");
+  } else {
+    stmt_ = lock_stmt;
+  }
+  return ret;
+}
+
+int ObLockTableResolver::resolve_oracle_mode(const ParseNode &parse_tree)
+{
+  int ret = OB_SUCCESS;
+  ObLockTableStmt *lock_stmt = NULL;
+
+  if (2 != parse_tree.num_child_) {
+    ret = OB_INVALID_ARGUMENT;
+    LOG_WARN("wrong node number", K(ret), K(parse_tree.num_child_));
+  } else if (OB_ISNULL(parse_tree.children_)
+             || OB_ISNULL(session_info_)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("node child and session should not be null", K(ret), K(parse_tree.children_),
+             K(session_info_));
+  } else if (OB_ISNULL(lock_stmt = create_stmt<ObLockTableStmt>())) {
+    ret = OB_ALLOCATE_MEMORY_FAILED;
+    LOG_ERROR("create lock stmt failed");
+  } else {
+    stmt_ = lock_stmt;
+  }
+
+  // 1. resolve table items
+  if (OB_SUCC(ret)) {
+    ParseNode *table_node = parse_tree.children_[TABLE];
+    if (OB_ISNULL(table_node)) {
+      ret = OB_ERR_UNEXPECTED;
+      LOG_WARN("invalid parse tree", K(ret));
+    } else if (OB_FAIL(resolve_table_relation_node(*table_node))) {
+      LOG_WARN("resolve table failed", K(ret));
+    }
+  }
+  // 2. resolve lock mode
+  if (OB_SUCC(ret)) {
+    if (OB_FAIL(resolve_lock_mode(*parse_tree.children_[LOCK_MODE]))) {
+      LOG_WARN("resolve where clause failed", K(ret));
+    }
+  }
+
+  return ret;
+}
+
+// TODO: yanyuan.cxf only deal with one table name.
+int ObLockTableResolver::resolve_table_relation_node(const ParseNode &parse_tree)
+{
+  int ret = OB_SUCCESS;
+  // TODO: yanyuan.cxf release TableItem
+  ObString table_name;
+  ObString database_name;
+  const ObTableSchema *table_schema = NULL;
+  int64_t tenant_id = session_info_->get_effective_tenant_id();
+  uint64_t database_id = OB_INVALID_ID;
+  ObLockTableStmt *lock_stmt = get_lock_table_stmt();
+
+  if (OB_ISNULL(lock_stmt)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("lock stmt should not be null", K(ret));
+  } else if (OB_ISNULL(schema_checker_)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("schema_checker should not be null", K(ret));
+  } else if (OB_FAIL(ObDDLResolver::resolve_table_relation_node(&parse_tree,
+                                                                table_name,
+                                                                database_name))) {
+    LOG_WARN("failed to resolve table relation node", K(ret));
+  } else if (OB_FAIL(schema_checker_->get_database_id(tenant_id,
+                                                      database_name,
+                                                      database_id))) {
+    LOG_WARN("failed to get database id", K(ret));
+  } else if (OB_FAIL(schema_checker_->get_table_schema(tenant_id,
+                                                       database_name,
+                                                       table_name,
+                                                       false,
+                                                       table_schema))){
+    LOG_WARN("failed to get table schema", K(ret));
+  } else if (OB_ISNULL(table_schema)) {
+    LOG_WARN("null table schema", K(ret));
+  } else {
+    lock_stmt->set_table_id(table_schema->get_table_id());
+  }
+  return ret;
+}
+
+int ObLockTableResolver::resolve_lock_mode(const ParseNode &parse_tree)
+{
+  int ret = OB_SUCCESS;
+  ObLockTableStmt *lock_stmt = get_lock_table_stmt();
+  if (OB_ISNULL(lock_stmt)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("lock stmt should not be null");
+  } else {
+    lock_stmt->set_lock_mode(parse_tree.value_);
+  }
+  return ret;
+}
+
+} // namespace sql
+} // namespace oceanbase