xudong963 opened a new pull request, #15671:
URL: https://github.com/apache/datafusion/pull/15671
## Which issue does this PR close?
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## Rationale for this change
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While upgrading DF46, I found tthat hese methods aren't public, but under
some scenes, we may only need the projected schema, so it's not efficient to
call `project()` method, which returns four elements
```rust
pub fn project(&self) -> (SchemaRef, Constraints, Statistics,
Vec<LexOrdering>) {
if self.projection.is_none() && self.table_partition_cols.is_empty()
{
return (
Arc::clone(&self.file_schema),
self.constraints.clone(),
self.file_source.statistics().unwrap().clone(),
self.output_ordering.clone(),
);
}
let schema = self.projected_schema();
let constraints = self.projected_constraints();
let stats = self.projected_stats();
let output_ordering = get_projected_output_ordering(self, &schema);
(schema, constraints, stats, output_ordering)
}
```
## What changes are included in this PR?
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Make the three projected methods public
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