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oceanbase/src/sql/resolver/ddl/ob_drop_index_resolver.cpp
obdev 8ce2f275c4 [fix] remove some internal urls and emails
2023-03-17 20:57:21 +08:00

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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_drop_index_resolver.h"
#include "share/schema/ob_table_schema.h"
#include "sql/resolver/ddl/ob_drop_index_stmt.h"
#include "sql/session/ob_sql_session_info.h"
namespace oceanbase
{
using namespace common;
using namespace obrpc;
using namespace share;
using namespace share::schema;
namespace sql
{
ObDropIndexResolver::ObDropIndexResolver(ObResolverParams &params) : ObDDLResolver(params)
{
}
ObDropIndexResolver::~ObDropIndexResolver()
{
}
int ObDropIndexResolver::resolve(const ParseNode &parse_tree)
{
int ret = OB_SUCCESS;
ParseNode *index_node = NULL;
if (lib::is_oracle_mode()) { // oracle mode
if (OB_UNLIKELY((parse_tree.type_ != T_DROP_INDEX || (1 != parse_tree.num_child_ && 2 != parse_tree.num_child_)))
|| OB_ISNULL(parse_tree.children_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid parse tree type or invalid children number", K(parse_tree.type_),
K(parse_tree.num_child_), K(parse_tree.children_), K(ret));
}
} else if (OB_UNLIKELY((parse_tree.type_ != T_DROP_INDEX || 2 != parse_tree.num_child_))
|| OB_ISNULL(parse_tree.children_)) { // mysql mode
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid parse tree type or invalid children number", K(parse_tree.type_),
K(parse_tree.num_child_), K(parse_tree.children_), K(ret));
}
if (OB_SUCC(ret)) {
ObDropIndexStmt *drop_index_stmt = NULL;
if (OB_UNLIKELY(NULL == (drop_index_stmt = create_stmt<ObDropIndexStmt>()))) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_ERROR("create index stmt failed", K(ret));
} else {
stmt_ = drop_index_stmt;
}
// get table name in oracle mode
if (OB_SUCC(ret) && lib::is_oracle_mode()) {
ParseNode *db_node = NULL;
int32_t max_database_name_length = OB_MAX_DATABASE_NAME_LENGTH;
if (1 == parse_tree.num_child_) {
index_node = parse_tree.children_[0];
} else if (2 == parse_tree.num_child_) {
db_node = parse_tree.children_[0];
index_node = parse_tree.children_[1];
}
if (OB_ISNULL(index_node)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("index_node is NULL", K(ret));
} else {
int32_t len = static_cast<int32_t>(index_node->str_len_);
ObString index_name(len, len, index_node->str_value_);
uint64_t tenant_id = session_info_->get_effective_tenant_id();
uint64_t db_id = OB_INVALID_ID;
ObString database_name;
const ObTableSchema *index_table_schema = NULL;
const ObTableSchema *data_table_schema = NULL;
if (1 == parse_tree.num_child_) {
// 缺省 database_name 的时候，默认使用当前 database_name
db_id = session_info_->get_database_id();
database_name = session_info_->get_database_name();
} else if (2 == parse_tree.num_child_) {
if (OB_ISNULL(db_node)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("db_node is NULL", K(ret));
} else {
if (OB_UNLIKELY(T_IDENT != db_node->type_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid parse tree node", K(ret), K(db_node->type_));
} else if (OB_UNLIKELY(static_cast<int32_t>(db_node->str_len_) > max_database_name_length)) {
ret = OB_ERR_TOO_LONG_IDENT;
LOG_USER_ERROR(OB_ERR_TOO_LONG_IDENT, (int)db_node->str_len_, db_node->str_value_);
} else {
database_name.assign_ptr(db_node->str_value_,
static_cast<int32_t>(db_node->str_len_));
}
}
if (OB_FAIL(ret)) {
} else if (OB_FAIL(schema_checker_->get_database_id(tenant_id, database_name, db_id))) {
LOG_WARN("fail to get db id", K(ret), K(index_name));
}
}
if (OB_FAIL(ret)) {
} else if (OB_FAIL(schema_checker_->get_idx_schema_by_origin_idx_name(tenant_id, db_id, index_name, index_table_schema))) {
LOG_WARN("fail to get index table schema", K(ret), K(index_name));
} else if (OB_ISNULL(index_table_schema)) {
// 获取到的 table_schema 为空，则说明当前 db 下没有 index_name 对应的 index
ret = OB_ERR_CANT_DROP_FIELD_OR_KEY;
LOG_WARN("index table schema should not be null", K(index_name), K(ret));
LOG_USER_ERROR(OB_ERR_CANT_DROP_FIELD_OR_KEY, index_name.length(), index_name.ptr());
} else if (OB_FAIL(schema_checker_->get_table_schema(tenant_id,
index_table_schema->get_data_table_id(), data_table_schema))) {
LOG_WARN("fail to get data table schema", K(ret), K(index_name));
} else {
ObString table_name; // related issue :
if (OB_FAIL(deep_copy_str(data_table_schema->get_table_name_str(), table_name))) {
LOG_WARN("failed to deep copy new_db_name", K(ret));
} else {
drop_index_stmt->set_table_name(table_name);
drop_index_stmt->set_database_name(database_name);
drop_index_stmt->set_tenant_id(session_info_->get_effective_tenant_id());
drop_index_stmt->set_table_id(data_table_schema->get_table_id());
}
}
if (OB_SUCC(ret) && ObSchemaChecker::is_ora_priv_check()) {
OZ (schema_checker_->check_ora_ddl_priv(
tenant_id, session_info_->get_priv_user_id(),
database_name, stmt::T_DROP_INDEX,
session_info_->get_enable_role_array()),
tenant_id, session_info_->get_user_id(), database_name);
}
}
} else if (OB_SUCC(ret) && lib::is_mysql_mode()) {
index_node = parse_tree.children_[0];
ParseNode *relation_node = parse_tree.children_[1];
ObString table_name;
ObString database_name;
if (OB_ISNULL(relation_node)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("relation_node is NULL", K(ret));
} else if (OB_FAIL(resolve_table_relation_node(relation_node, table_name, database_name))) {
LOG_WARN("failed to resolve table relation node!", K(ret));
} else {
drop_index_stmt->set_table_name(table_name);
drop_index_stmt->set_database_name(database_name);
drop_index_stmt->set_tenant_id(session_info_->get_effective_tenant_id());
}
}
if (OB_SUCC(ret)) {
if (OB_ISNULL(index_node)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("index_node is NULL", K(ret));
} else {
int32_t len = static_cast<int32_t>(index_node->str_len_);
ObString index_name(len, len, index_node->str_value_);
// 检查索引是否建立在外键列上，如果是的话，则不允许删除该索引
const ObTableSchema *table_schema = NULL;
if (OB_FAIL(schema_checker_->get_table_schema(session_info_->get_effective_tenant_id(),
drop_index_stmt->get_database_name(),
drop_index_stmt->get_table_name(),
false /* not index table */,
table_schema))) {
if (OB_TABLE_NOT_EXIST == ret) {
LOG_USER_ERROR(OB_TABLE_NOT_EXIST, to_cstring(drop_index_stmt->get_database_name()), to_cstring(drop_index_stmt->get_table_name()));
}
LOG_WARN("fail to get table schema", K(ret));
} else if (OB_ISNULL(table_schema)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("table schema is NULL", K(ret));
} else if (table_schema->is_parent_table() || table_schema->is_child_table()) {
const ObTableSchema *index_table_schema = NULL;
ObString index_table_name;
ObArenaAllocator allocator(ObModIds::OB_SCHEMA);
bool has_other_indexes_on_same_cols = false;
if (OB_FAIL(ObTableSchema::build_index_table_name(allocator,
table_schema->get_table_id(),
index_name,
index_table_name))) {
LOG_WARN("build_index_table_name failed", K(table_schema->get_table_id()), K(index_name), K(ret));
} else if (OB_FAIL(schema_checker_->get_table_schema(session_info_->get_effective_tenant_id(),
drop_index_stmt->get_database_name(),
index_table_name,
true /* index table */,
index_table_schema))) {
LOG_WARN("fail to get index table schema", K(ret));
} else if (OB_ISNULL(index_table_schema)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("table schema is NULL", K(ret));
} else if (OB_FAIL(check_indexes_on_same_cols(*table_schema,
*index_table_schema,
*schema_checker_,
has_other_indexes_on_same_cols))) {
LOG_WARN("check indexes on same cols failed", K(ret));
} else if (!has_other_indexes_on_same_cols && lib::is_mysql_mode()) {
if (OB_FAIL(check_index_columns_equal_foreign_key(*table_schema, *index_table_schema))) {
LOG_WARN("failed to check_index_columns_equal_foreign_key", K(ret), K(index_table_name));
}
}
}
// 外键列对删除索引的影响至此检查结束
if (OB_SUCC(ret)) {
drop_index_stmt->set_index_name(index_name);
obrpc::ObDropIndexArg &drop_index_arg = drop_index_stmt->get_drop_index_arg();
}
}
}
}
return ret;
}
} // namespace sql
} // namespace oceanbase
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