risingwave_stream/executor/top_n/
mod.rs

1// Copyright 2025 RisingWave Labs
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15/// Wrapper and helper functions to help implement [`crate::executor::Executor`] for `TopN` variants
16mod utils;
17use utils::*;
18
19mod top_n_cache;
20mod top_n_state;
21use top_n_cache::{TopNCache, TopNCacheTrait};
22use top_n_state::ManagedTopNState;
23
24// `TopN` variants
25mod group_top_n;
26mod group_top_n_appendonly;
27mod top_n_appendonly;
28mod top_n_plain;
29
30pub use group_top_n::GroupTopNExecutor;
31pub use group_top_n_appendonly::AppendOnlyGroupTopNExecutor;
32pub use top_n_appendonly::AppendOnlyTopNExecutor;
33pub use top_n_plain::TopNExecutor;