alamb commented on a change in pull request #2052:
URL: https://github.com/apache/arrow-datafusion/pull/2052#discussion_r832032134
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File path: datafusion/src/catalog/catalog.rs
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@@ -110,12 +111,23 @@ pub trait CatalogProvider: Sync + Send {
fn schema(&self, name: &str) -> Option<Arc<dyn SchemaProvider>>;
/// Adds a new schema to this catalog.
- /// If a schema of the same name existed before, it is replaced in the
catalog and returned.
+ ///
+ /// If a schema of the same name existed before, it is replaced in
+ /// the catalog and returned.
+ ///
+ /// By default returns a "Not Implemented" error
fn register_schema(
&self,
name: &str,
schema: Arc<dyn SchemaProvider>,
- ) -> Option<Arc<dyn SchemaProvider>>;
+ ) -> Result<Option<Arc<dyn SchemaProvider>>> {
Review comment:
this is the change -- return `Result` here (and add a default impl that
returns error)
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