80 lines
2.1 KiB
C++
80 lines
2.1 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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#include "ob_sstable_row_getter.h"
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using namespace oceanbase::common;
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using namespace oceanbase::blocksstable;
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namespace oceanbase {
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namespace storage {
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ObSSTableRowGetter::ObSSTableRowGetter() : ObSSTableRowIterator(), has_prefetched_(false)
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{}
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ObSSTableRowGetter::~ObSSTableRowGetter()
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{}
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int ObSSTableRowGetter::get_handle_cnt(const void* query_range, int64_t& read_handle_cnt, int64_t& micro_handle_cnt)
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{
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int ret = OB_SUCCESS;
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if (NULL == query_range) {
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ret = OB_INVALID_ARGUMENT;
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STORAGE_LOG(WARN, "Invalid argument, ", K(ret));
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} else {
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read_handle_cnt = 1;
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micro_handle_cnt = 2;
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}
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return ret;
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}
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int ObSSTableRowGetter::prefetch_read_handle(ObSSTableReadHandle& read_handle)
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{
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int ret = OB_SUCCESS;
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if (has_prefetched_) {
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ret = OB_ITER_END;
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} else if (OB_FAIL(get_read_handle(*rowkey_, read_handle))) {
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STORAGE_LOG(WARN, "Fail to get read handle, ", K(ret), K(*rowkey_));
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} else {
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read_handle.range_idx_ = 0;
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has_prefetched_ = true;
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}
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return ret;
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}
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int ObSSTableRowGetter::fetch_row(ObSSTableReadHandle& read_handle, const ObStoreRow*& store_row)
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{
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return get_row(read_handle, store_row);
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}
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void ObSSTableRowGetter::reset()
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{
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ObSSTableRowIterator::reset();
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has_prefetched_ = false;
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}
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void ObSSTableRowGetter::reuse()
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{
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ObSSTableRowIterator::reuse();
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has_prefetched_ = false;
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}
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int ObSSTableRowGetter::get_range_count(const void* query_range, int64_t& range_count) const
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{
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int ret = OB_SUCCESS;
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UNUSED(query_range);
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range_count = 1;
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return ret;
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}
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} // namespace storage
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} // namespace oceanbase
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