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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/08/23 14:21:57 UTC
[GitHub] [arrow] alamb commented on a change in pull request #8030: ARROW-9835: [Rust][DataFusion] Removed FunctionMeta and FunctionType
alamb commented on a change in pull request #8030:
URL: https://github.com/apache/arrow/pull/8030#discussion_r475225101
##########
File path: rust/datafusion/src/execution/context.rs
##########
@@ -489,15 +489,13 @@ impl SchemaProvider for ExecutionContextState {
self.datasources.get(name).map(|ds| ds.schema().clone())
}
- fn get_function_meta(&self, name: &str) -> Option<Arc<FunctionMeta>> {
- self.scalar_functions.get(name).map(|f| {
- Arc::new(FunctionMeta::new(
- name.to_owned(),
- f.args.clone(),
- f.return_type.clone(),
- FunctionType::Scalar,
- ))
- })
+ fn get_function_meta(&self, name: &str) -> Option<Arc<ScalarFunction>> {
Review comment:
Fascinatingly, I have added basically the same signature in https://github.com/apache/arrow/pull/8031. So I feel like we are heading in the same direction
##########
File path: rust/datafusion/src/execution/context.rs
##########
@@ -489,15 +489,13 @@ impl SchemaProvider for ExecutionContextState {
self.datasources.get(name).map(|ds| ds.schema().clone())
}
- fn get_function_meta(&self, name: &str) -> Option<Arc<FunctionMeta>> {
- self.scalar_functions.get(name).map(|f| {
- Arc::new(FunctionMeta::new(
- name.to_owned(),
- f.args.clone(),
- f.return_type.clone(),
- FunctionType::Scalar,
- ))
- })
+ fn get_function_meta(&self, name: &str) -> Option<Arc<ScalarFunction>> {
+ let fun = self.scalar_functions.get(name);
Review comment:
I think you can do this in a single line:
```
self.scalar_functions.get(name).and_then(|func| Some(func.clone()))
```
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