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src/sql/resolver/ddl/ob_outline_resolver.cpp

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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.
+ */
+
+#define USING_LOG_PREFIX SQL_RESV
+#include "sql/resolver/ddl/ob_outline_resolver.h"
+
+#include "sql/ob_sql_utils.h"
+#include "sql/resolver/ob_resolver.h"
+#include "sql/resolver/ob_stmt_resolver.h"
+#include "sql/session/ob_sql_session_info.h"
+#include "sql/resolver/dml/ob_insert_resolver.h"
+#include "sql/resolver/dml/ob_update_resolver.h"
+#include "sql/resolver/dml/ob_delete_resolver.h"
+#include "sql/resolver/dml/ob_select_resolver.h"
+
+namespace oceanbase {
+using namespace common;
+namespace sql {
+int ObOutlineResolver::resolve_outline_name(const ParseNode* node, ObString& db_name, ObString& outline_name)
+{
+  int ret = OB_SUCCESS;
+  ObNameCaseMode mode = OB_NAME_CASE_INVALID;
+  ObCollationType cs_type = CS_TYPE_INVALID;
+
+  if (OB_ISNULL(node) || OB_UNLIKELY(T_RELATION_FACTOR != node->type_) ||
+      OB_UNLIKELY(RELATION_FACTOR_CHILD_COUNT > node->num_child_)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("invalid parse tree", K(ret));
+  } else if (OB_ISNULL(node->children_)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("invalid node children is NULL", K(node), K(ret));
+  } else if (OB_ISNULL(session_info_)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("session info is NULL", K(ret));
+  } else if (OB_FAIL(session_info_->get_name_case_mode(mode))) {
+    LOG_WARN("fail to get name case mode", K(mode), K(ret));
+  } else if (OB_FAIL(session_info_->get_collation_connection(cs_type))) {
+    LOG_WARN("fail to get collation_connection", K(ret));
+  } else if (OB_ISNULL(stmt_)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("stmt_ is NULL", K(ret));
+  } else {
+    const ParseNode* db_name_node = node->children_[0];
+    const ParseNode* outline_name_node = node->children_[1];
+
+    // get outline name, TODO:check outline_name length
+    outline_name.assign_ptr(
+        outline_name_node->str_value_, static_cast<ObString::obstr_size_t>(outline_name_node->str_len_));
+
+    // get database name
+    bool perserve_lettercase = share::is_oracle_mode() ? true : (mode != OB_LOWERCASE_AND_INSENSITIVE);
+    if (NULL == db_name_node) {
+      if (session_info_->get_database_name().empty()) {
+        ret = OB_ERR_NO_DB_SELECTED;
+        LOG_WARN("no database selected");
+      } else {
+        db_name = session_info_->get_database_name();
+      }
+    } else {
+      db_name.assign_ptr(db_name_node->str_value_, static_cast<int32_t>(db_name_node->str_len_));
+      if (OB_FAIL(ObSQLUtils::check_and_convert_db_name(cs_type, perserve_lettercase, db_name))) {
+        LOG_WARN("fail to check and convert database name", K(db_name), K(ret));
+      } else {
+        CK(OB_NOT_NULL(schema_checker_));
+        CK(OB_NOT_NULL(schema_checker_->get_schema_guard()));
+        OZ(ObSQLUtils::cvt_db_name_to_org(*schema_checker_->get_schema_guard(), session_info_, db_name));
+      }
+    }
+  }
+  return ret;
+}
+
+int ObOutlineResolver::resolve_outline_stmt(const ParseNode* node, ObStmt*& out_stmt, ObString& out_sql)
+{
+  int ret = OB_SUCCESS;
+  if (OB_ISNULL(node) || OB_ISNULL(stmt_)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("invalid parameter", K(ret), K(node), K(stmt_));
+  } else {
+    ObStmt* outline_stmt = NULL;
+    ObResolver resolver(params_);
+    if (node->type_ != T_SELECT && node->type_ != T_INSERT && node->type_ != T_REPLACE && node->type_ != T_DELETE &&
+        node->type_ != T_UPDATE) {
+      ret = OB_ERR_UNEXPECTED;
+      LOG_WARN("unexpected node type", K(node->type_), K(ret));
+    } else if (OB_FAIL(resolver.resolve(ObResolver::IS_NOT_PREPARED_STMT, *node, outline_stmt))) {
+      LOG_WARN("fail to resolve", K(ret));
+    } else if (OB_ISNULL(outline_stmt)) {
+      ret = OB_ERR_UNEXPECTED;
+      LOG_WARN("invalid outline_stmt is NULL", K(ret));
+    } else {
+      out_stmt = outline_stmt;
+      out_sql.assign_ptr(node->str_value_, static_cast<int32_t>(node->str_len_));
+    }
+  }
+  return ret;
+}
+
+int ObOutlineResolver::resolve_outline_target(const ParseNode* target_node, ObString& outline_target)
+{
+  int ret = OB_SUCCESS;
+  if (NULL == target_node) {
+    // has no outline_target, keep empty
+    outline_target.reset();
+  } else {
+    outline_target.assign_ptr(target_node->str_value_, static_cast<int32_t>(target_node->str_len_));
+  }
+  return ret;
+}
+
+}  // namespace sql
+}  // namespace oceanbase