7f4b204064
* relicense mini-lsm-book to CC BY-NC-SA 4.0 Signed-off-by: Alex Chi Z <iskyzh@gmail.com> * clearify license Signed-off-by: Alex Chi Z <iskyzh@gmail.com> * fix fmt Signed-off-by: Alex Chi Z <iskyzh@gmail.com> * fix fmt Signed-off-by: Alex Chi Z <iskyzh@gmail.com> --------- Signed-off-by: Alex Chi Z <iskyzh@gmail.com>
41 lines
1.2 KiB
Rust
41 lines
1.2 KiB
Rust
// Copyright (c) 2022-2025 Alex Chi Z
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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pub mod concat_iterator;
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pub mod merge_iterator;
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pub mod two_merge_iterator;
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pub trait StorageIterator {
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type KeyType<'a>: PartialEq + Eq + PartialOrd + Ord
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where
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Self: 'a;
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/// Get the current value.
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fn value(&self) -> &[u8];
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/// Get the current key.
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fn key(&self) -> Self::KeyType<'_>;
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/// Check if the current iterator is valid.
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fn is_valid(&self) -> bool;
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/// Move to the next position.
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fn next(&mut self) -> anyhow::Result<()>;
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/// Number of underlying active iterators for this iterator.
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fn num_active_iterators(&self) -> usize {
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1
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}
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}
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