zhuqi-lucas commented on code in PR #23438:
URL: https://github.com/apache/datafusion/pull/23438#discussion_r3592437393
##########
datafusion/catalog/src/information_schema.rs:
##########
@@ -81,14 +82,28 @@ impl InformationSchemaProvider {
/// Creates a new [`InformationSchemaProvider`] for the provided
`catalog_list`
pub fn new(catalog_list: Arc<dyn CatalogProviderList>) -> Self {
Self {
- config: InformationSchemaConfig { catalog_list },
+ config: InformationSchemaConfig {
+ catalog_list,
+ table_functions: HashMap::new(),
+ },
}
}
+
+ /// Attach the session's table (UDTF) functions so that they appear in
+ /// `information_schema.routines` / `SHOW FUNCTIONS`.
+ pub fn with_table_functions(
+ mut self,
+ table_functions: HashMap<String, Arc<TableFunction>>,
+ ) -> Self {
+ self.config.table_functions = table_functions;
+ self
+ }
}
#[derive(Clone, Debug)]
struct InformationSchemaConfig {
catalog_list: Arc<dyn CatalogProviderList>,
+ table_functions: HashMap<String, Arc<TableFunction>>,
Review Comment:
Thanks @alamb for this, TableFunction lives in datafusion-catalog, which
already depends on datafusion-session — putting table_functions() on the
Session trait reverses that edge. Scalar/Agg live in datafusion-expr (below
session), so no cycle there. Same root as #23348 — I'll open a follow-up PR
that moves TableFunction down and deletes with_table_functions().
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