risingwave_stream/executor/match_recognize/mod.rs
1// Copyright 2026 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//! Streaming `MATCH_RECOGNIZE` (SQL:2016 row pattern recognition).
16//!
17//! The ordered-input matcher: the executor consumes rows already in `ORDER BY` order (see the
18//! planner's `EowcSort` insertion), feeding a per-partition incremental NFA matcher and
19//! emitting matches on completion. `nfa` carries the pattern-matching core with its
20//! catastrophic-backtracking defenses; `incremental` the appended-rows matcher; `proto` the
21//! structured pattern decoding.
22
23pub mod executor;
24pub mod incremental;
25pub mod nfa;
26pub mod proto;