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oceanbase-admin
131
src/sql/resolver/ddl/ob_drop_database_resolver.cpp
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131
src/sql/resolver/ddl/ob_drop_database_resolver.cpp
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/**
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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_drop_database_resolver.h"
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#include "sql/resolver/ddl/ob_drop_database_stmt.h"
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#include "sql/resolver/ddl/ob_database_resolver.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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/**
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* DROP DATABASE database_name
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*/
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namespace oceanbase {
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using namespace common;
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namespace sql {
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ObDropDatabaseResolver::ObDropDatabaseResolver(ObResolverParams& params) : ObDDLResolver(params)
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{}
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ObDropDatabaseResolver::~ObDropDatabaseResolver()
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{}
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int ObDropDatabaseResolver::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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if (OB_ISNULL(node) || OB_UNLIKELY(node->type_ != T_DROP_DATABASE) ||
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OB_UNLIKELY(node->num_child_ != DB_NODE_COUNT) || OB_ISNULL(node->children_)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("invalid parse tree", K(ret), K(node));
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} else if (OB_ISNULL(session_info_)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("session info should not be null", K(ret));
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} else {
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ObDropDatabaseStmt* drop_database_stmt = NULL;
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if (OB_ISNULL(drop_database_stmt = create_stmt<ObDropDatabaseStmt>())) {
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ret = OB_ALLOCATE_MEMORY_FAILED;
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LOG_ERROR("failed to create drop_database_stmt", K(ret));
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} else {
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stmt_ = drop_database_stmt;
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drop_database_stmt->set_tenant_id(session_info_->get_effective_tenant_id());
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}
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// resolve if exist
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if (OB_SUCC(ret)) {
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if (node->children_[IF_EXIST] != NULL) {
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if (node->children_[IF_EXIST]->type_ != T_IF_EXISTS) {
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LOG_WARN("invalid parse tree", K(ret));
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} else {
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drop_database_stmt->set_if_exist(true);
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;
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}
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}
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}
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/* database name */
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if (OB_SUCC(ret)) {
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// resolve database name
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ObString database_name;
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ParseNode* dbname_node = node->children_[DBNAME];
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int32_t max_database_name_length = GET_MIN_CLUSTER_VERSION() < CLUSTER_CURRENT_VERSION
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? OB_MAX_DATABASE_NAME_LENGTH - 1
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: OB_MAX_DATABASE_NAME_LENGTH;
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if (OB_ISNULL(dbname_node) || OB_UNLIKELY(T_IDENT != dbname_node->type_)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("invalid parse tree", K(ret));
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} else {
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database_name.assign_ptr(dbname_node->str_value_, static_cast<int32_t>(dbname_node->str_len_));
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ObNameCaseMode mode = OB_NAME_CASE_INVALID;
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if (OB_FAIL(session_info_->get_name_case_mode(mode))) {
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LOG_WARN("fail to get name case mode", K(mode), K(ret));
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} else {
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bool perserve_lettercase = share::is_oracle_mode() ? 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(cs_type, perserve_lettercase, database_name))) {
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LOG_WARN("fail to check and convert database name", K(database_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(), session_info_, database_name));
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OX(drop_database_stmt->set_database_name(database_name));
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}
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}
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}
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}
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if (OB_SUCC(ret)) {
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ObString server_charset;
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int64_t coll_cs_server_int64 = -1;
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int64_t coll_server_int64 = -1;
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if (OB_FAIL(session_info_->get_sys_variable(share::SYS_VAR_CHARACTER_SET_SERVER, coll_cs_server_int64))) {
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LOG_WARN("failed to get character_set_server", K(ret));
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} else if (OB_FAIL(session_info_->get_sys_variable(share::SYS_VAR_COLLATION_SERVER, coll_server_int64))) {
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LOG_WARN("failed to get server collation info", K(ret));
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} else if (false == ObCharset::is_valid_collation(coll_cs_server_int64) ||
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false == ObCharset::is_valid_collation(coll_server_int64)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("invalid collation type", K(ret), K(coll_cs_server_int64), K(coll_server_int64));
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} else if (OB_FAIL(ObCharset::charset_name_by_coll(
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static_cast<ObCollationType>(coll_cs_server_int64), server_charset))) {
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LOG_WARN("fail to get charset name by collation type", K(ret), K(coll_cs_server_int64));
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} else {
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drop_database_stmt->set_server_charset(server_charset);
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drop_database_stmt->set_server_collation(
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ObString(ObCharset::collation_name(static_cast<ObCollationType>(coll_server_int64))));
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}
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}
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if (OB_SUCC(ret)) {
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ObObj is_recyclebin_open;
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if (OB_FAIL(session_info_->get_sys_variable(share::SYS_VAR_RECYCLEBIN, is_recyclebin_open))) {
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LOG_WARN("get sys variable failed", K(ret));
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} else {
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drop_database_stmt->set_to_recyclebin(is_recyclebin_open.get_bool());
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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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} // end namespace sql
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} // end namespace oceanbase
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