risingwave_frontend/binder/
declare_cursor.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
15use risingwave_sqlparser::ast::{Ident, ObjectName, Since};
16
17use super::statement::RewriteExprsRecursive;
18use crate::binder::BoundQuery;
19use crate::expr::ExprRewriter;
20
21#[derive(Debug, Clone)]
22pub struct BoundDeclareCursor {
23    pub cursor_name: Ident,
24    // Currently we only support cursor with query
25    pub query: Box<BoundQuery>, // reuse the BoundQuery struct
26}
27
28impl RewriteExprsRecursive for BoundDeclareCursor {
29    fn rewrite_exprs_recursive(&mut self, rewriter: &mut impl ExprRewriter) {
30        self.query.rewrite_exprs_recursive(rewriter);
31    }
32}
33
34#[derive(Debug, Clone)]
35pub struct BoundDeclareSubscriptionCursor {
36    pub cursor_name: Ident,
37    pub subscription_name: ObjectName,
38    pub rw_timestamp: Since,
39}
risingwave_frontend/binder/declare_cursor.rs

risingwave_frontend/binder/
declare_cursor.rs
