Chen-Yuan-Lai commented on code in PR #14826:
URL: https://github.com/apache/datafusion/pull/14826#discussion_r2013574522


##########
datafusion/functions/src/crypto/basic.rs:
##########
@@ -328,6 +322,37 @@ impl DigestAlgorithm {
             }
         }
     }
+
+    pub fn digest_binary_array_impl<'a, BinaryArrType>(
+        self,
+        input_value: BinaryArrType,
+    ) -> ArrayRef
+    where
+        BinaryArrType: BinaryArrayType<'a>,
+    {
+        match self {
+            Self::Md5 => digest_to_array!(Md5, input_value),
+            Self::Sha224 => digest_to_array!(Sha224, input_value),
+            Self::Sha256 => digest_to_array!(Sha256, input_value),
+            Self::Sha384 => digest_to_array!(Sha384, input_value),
+            Self::Sha512 => digest_to_array!(Sha512, input_value),
+            Self::Blake2b => digest_to_array!(Blake2b512, input_value),
+            Self::Blake2s => digest_to_array!(Blake2s256, input_value),
+            Self::Blake3 => {
+                let binary_array: BinaryArray = input_value
+                    .iter()
+                    .map(|opt| {
+                        opt.map(|x| {
+                            let mut digest = Blake3::default();
+                            digest.update(x);
+                            Blake3::finalize(&digest).as_bytes().to_vec()
+                        })
+                    })
+                    .collect();
+                Arc::new(binary_array)
+            }
+        }
+    }

Review Comment:
   I found that these two array types don't share a common trait that would 
allow implementing a single generic function. Since the key difference is in 
how bytes are accessed, I'll keep these functions separate to maintain type 
safety.



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