Add range partitioning metadata

Author: gene-bordegaray

datafusion/ffi/src/physical_expr/partitioning.rs

@@ -45,8 +45,10 @@ impl From<&Partitioning> for FFI_Partitioning {
                     .collect();
                 Self::Hash(exprs, *size)
             }
-            // FFI does not yet expose expression partition metadata.
-            Partitioning::Expr(expr) => Self::UnknownPartitioning(expr.partition_count()),
+            // FFI does not yet expose range partition metadata.
+            Partitioning::Range(range) => {
+                Self::UnknownPartitioning(range.partition_count())
+            }
             Partitioning::UnknownPartitioning(size) => Self::UnknownPartitioning(*size),
         }
     }

datafusion/physical-expr/src/lib.rs

@@ -58,7 +58,10 @@ pub use analysis::{AnalysisContext, ExprBoundaries, analyze};
 pub use equivalence::{
     AcrossPartitions, ConstExpr, EquivalenceProperties, calculate_union,
 };
-pub use partitioning::{Distribution, ExprPartitioning, Partitioning};
+pub use partitioning::{
+    Distribution, Partitioning, RangeBound, RangeInterval, RangePartition,
+    RangePartitioning,
+};
 pub use physical_expr::{
     add_offset_to_expr, add_offset_to_physical_sort_exprs, create_lex_ordering,
     create_ordering, create_physical_sort_expr, create_physical_sort_exprs,