115 lines
4.7 KiB
C++
115 lines
4.7 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX SQL_RESV
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#include "sql/resolver/ddl/ob_use_database_resolver.h"
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#include "sql/resolver/ddl/ob_use_database_stmt.h"
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#include "sql/session/ob_sql_session_info.h"
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#include "sql/ob_sql_utils.h"
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namespace oceanbase
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{
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using namespace share::schema;
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using namespace common;
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namespace sql
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{
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ObUseDatabaseResolver::ObUseDatabaseResolver(ObResolverParams ¶ms)
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: ObDDLResolver(params)
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{
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}
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ObUseDatabaseResolver::~ObUseDatabaseResolver()
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{
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}
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int ObUseDatabaseResolver::resolve(const ParseNode &parse_tree)
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{
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int ret = OB_SUCCESS;
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ParseNode *node = const_cast<ParseNode*>(&parse_tree);
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ObUseDatabaseStmt *use_database_stmt = NULL;
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if (OB_ISNULL(node)
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|| T_USE_DATABASE != node->type_
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|| 1 != node->num_child_
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|| OB_ISNULL(node->children_)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid argument", K(node));
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} else if (OB_ISNULL(node->children_[0])
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|| T_IDENT != node->children_[0]->type_) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid argument", K(node), K(node->children_[0]));
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} else if (OB_ISNULL(use_database_stmt = create_stmt<ObUseDatabaseStmt>())) {
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ret = OB_ALLOCATE_MEMORY_FAILED;
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LOG_ERROR("failed to create use_database_stmt");
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} else {
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ObString db_name;
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db_name.assign_ptr(node->children_[0]->str_value_,
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static_cast<int32_t>(node->children_[0]->str_len_));
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ObNameCaseMode mode = OB_NAME_CASE_INVALID;
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if (OB_ISNULL(session_info_) || OB_ISNULL(schema_checker_)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("invalid session info", K(session_info_), K(schema_checker_));
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} else if (OB_FAIL(session_info_->get_name_case_mode(mode))) {
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SERVER_LOG(WARN, "fail to get name case mode", K(mode), K(ret));
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} else {
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bool perserve_lettercase = lib::is_oracle_mode() ?
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true : (mode != OB_LOWERCASE_AND_INSENSITIVE);
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ObCollationType cs_type = CS_TYPE_INVALID;
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if (OB_FAIL(session_info_->get_collation_connection(cs_type))) {
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LOG_WARN("fail to get collation_connection", K(ret));
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} else if (OB_FAIL(ObSQLUtils::check_and_convert_db_name(
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cs_type, perserve_lettercase, db_name))) {
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LOG_WARN("fail to check and convert database name", K(db_name), K(ret));
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} else {
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CK (OB_NOT_NULL(schema_checker_));
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CK (OB_NOT_NULL(schema_checker_->get_schema_guard()));
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OZ (ObSQLUtils::cvt_db_name_to_org(*schema_checker_->get_schema_guard(),
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session_info_,
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db_name));
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use_database_stmt->set_db_name(db_name);
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uint64_t tenant_id = session_info_->get_effective_tenant_id();
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share::schema::ObSessionPrivInfo session_priv;
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session_info_->get_session_priv_info(session_priv);
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uint64_t database_id = OB_INVALID_ID;
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const share::schema::ObDatabaseSchema *db_schema = NULL;
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if (OB_FAIL(schema_checker_->get_database_id(tenant_id, db_name, database_id))) {
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LOG_USER_ERROR(OB_ERR_BAD_DATABASE, db_name.length(), db_name.ptr());
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LOG_WARN("invalid database name. ", K(db_name));
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} else if (OB_FAIL(schema_checker_->check_db_access(session_priv, db_name))) {
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SQL_ENG_LOG(WARN, "fail to check user privilege", K(db_name),K(ret));
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if (params_.disable_privilege_check_ == PRIV_CHECK_FLAG_DISABLE) {
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LOG_WARN("db access privilege check is disabled");
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ret = OB_SUCCESS;
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}
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}
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if (OB_SUCC(ret)) {
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if (OB_FAIL(schema_checker_->get_database_schema(tenant_id, database_id, db_schema))) {
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LOG_WARN("failed to get db schema", K(ret), K(database_id));
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} else {
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use_database_stmt->set_db_id(database_id);
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use_database_stmt->set_db_priv_set(session_priv.db_priv_set_);
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use_database_stmt->set_db_charset(
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ObString::make_string(ObCharset::charset_name(db_schema->get_charset_type())));
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use_database_stmt->set_db_collation(
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ObString::make_string(ObCharset::collation_name(db_schema->get_collation_type())));
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}
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}
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}
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}
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}
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return ret;
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}
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} //namespace sql
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} //namespace oceanbase
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