Method catalog

datafusion-examples/examples/data_io/catalog.rs:289–292

Retrieves a specific catalog by name, provided it exists.

(&self, name: &str)

    /// Retrieves a specific catalog by name, provided it exists.
    fn catalog(&self, name: &str) -> Option<Arc<dyn CatalogProvider>> {
        let cats = self.catalogs.read().unwrap();
        cats.get(name).cloned()
    }
}

fn prepare_example_data() -> Result<TempDir> {