risingwave_frontend/catalog/system_catalog/rw_catalog/
rw_depend.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_common::types::Fields;
16use risingwave_frontend_macro::system_catalog;
17
18use crate::catalog::system_catalog::SysCatalogReaderImpl;
19use crate::error::Result;
20
21/// The catalog `rw_depend` records the dependency relationships between tables, mviews etc.
22#[derive(Fields)]
23#[primary_key(objid, refobjid)]
24struct RwDepend {
25    /// The OID of the specific dependent object
26    objid: i32,
27    /// The OID of the specific referenced object
28    refobjid: i32,
29}
30
31#[system_catalog(table, "rw_catalog.rw_depend")]
32async fn read_rw_depend(reader: &SysCatalogReaderImpl) -> Result<Vec<RwDepend>> {
33    let dependencies = reader.meta_client.list_object_dependencies().await?;
34    Ok(dependencies
35        .into_iter()
36        .map(|depend| RwDepend {
37            objid: depend.object_id as i32,
38            refobjid: depend.referenced_object_id as i32,
39        })
40        .collect())
41}