127 lines
3.9 KiB
C++
127 lines
3.9 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_OPT
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#include "ob_index_info_cache.h"
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#include "sql/resolver/dml/ob_dml_stmt.h"
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namespace oceanbase
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{
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using namespace common;
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namespace sql
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{
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ObIndexInfoCache::~ObIndexInfoCache()
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{
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for (int i = 0; i < entry_count_; ++i) {
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if (NULL != index_entrys_[i]) {
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index_entrys_[i]->~IndexInfoEntry();
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}
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}
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}
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int ObIndexInfoCache::get_index_info_entry(const uint64_t table_id,
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const uint64_t index_id,
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IndexInfoEntry *&entry) const
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{
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int ret = OB_SUCCESS;
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entry = NULL;
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if (table_id != table_id_ ||
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OB_UNLIKELY(OB_INVALID_ID == index_id)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("table_id is invalid", K(index_id), K_(table_id), K(ret));
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} else {
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for (int64_t i = 0; OB_SUCC(ret) && i < entry_count_; ++i) {
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if (OB_ISNULL(index_entrys_[i])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("entry should not be null", K(ret));
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} else if (index_entrys_[i]->get_index_id() == index_id) {
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entry = index_entrys_[i];
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break;
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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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int ObIndexInfoCache::get_query_range(const uint64_t table_id,
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const uint64_t index_id,
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const QueryRangeInfo *&range_info) const
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{
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int ret = OB_SUCCESS;
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range_info = NULL;
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if (table_id != table_id_) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("table_id is invalid", K(table_id), K_(table_id), K(ret));
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} else {
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IndexInfoEntry *entry = NULL;
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if (OB_FAIL(get_index_info_entry(table_id, index_id, entry))) {
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LOG_WARN("failed to get index_info entry", K(index_id), K(ret));
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} else if (OB_ISNULL(entry)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("entry should not be null", K(ret));
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} else if (entry->get_range_info().is_valid()){
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range_info = &entry->get_range_info();
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} else {
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LOG_TRACE("entry is invalid", K(table_id), K(index_id));
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}
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}
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return ret;
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}
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/*
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* 这个接口和ob_join_order.cpp 的 get_access_path_ordering一样，只是从cache里面拿到ordering info
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* */
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int ObIndexInfoCache::get_access_path_ordering(const uint64_t table_id,
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const uint64_t index_id,
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const OrderingInfo *&ordering_info) const
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{
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int ret = OB_SUCCESS;
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ordering_info = NULL;
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if (table_id != table_id_) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("table_id is invalid", K(table_id), K_(table_id), K(ret));
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} else {
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IndexInfoEntry *entry = NULL;
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if (OB_FAIL(get_index_info_entry(table_id, index_id, entry))) {
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LOG_WARN("failed to get index_info entry", K(index_id), K(ret));
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} else if (OB_ISNULL(entry)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("entry should not be null", K(ret));
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} else {
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ordering_info = &entry->get_ordering_info();
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}
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}
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return ret;
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}
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int ObIndexInfoCache::add_index_info_entry(IndexInfoEntry *entry)
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{
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int ret = OB_SUCCESS;
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if (OB_ISNULL(entry)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("entry should not be null", K(ret));
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} else if (entry_count_ >= common::OB_MAX_INDEX_PER_TABLE + 1) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid entry count", K(ret), K_(entry_count),
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K(common::OB_MAX_INDEX_PER_TABLE));
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} else {
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index_entrys_[entry_count_] = entry;
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++entry_count_;
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}
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return ret;
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}
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} //end of namespace sql
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} //end of namespace oceanbase
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