feat(arrow-array): add BinaryArrayType similar to StringArrayType

arrow-array/src/array/mod.rs

@@ -620,6 +620,37 @@ impl<'a> StringArrayType<'a> for &'a StringViewArray {
     }
 }
 
+/// A trait for Arrow Binary Arrays, currently the following types are supported:
+/// - `BinaryArray`
+/// - `LargeBinaryArray`
+/// - `BinaryViewArray`
+/// - `FixedSizeBinaryArray`
+///
+/// This trait helps to abstract over the different types of binary arrays
+/// so that we don't need to duplicate the implementation for each type.
+pub trait BinaryArrayType<'a>: ArrayAccessor<Item = &'a [u8]> + Sized {
+    /// Constructs a new iterator
+    fn iter(&self) -> ArrayIter<Self>;
+}
+
+impl<'a, O: OffsetSizeTrait> BinaryArrayType<'a> for &'a GenericBinaryArray<O> {
+    fn iter(&self) -> ArrayIter<Self> {
+        GenericBinaryArray::<O>::iter(self)
+    }
+}
+
+impl<'a> BinaryArrayType<'a> for &'a BinaryViewArray {
+    fn iter(&self) -> ArrayIter<Self> {
+        BinaryViewArray::iter(self)
+    }
+}
+
+impl<'a> BinaryArrayType<'a> for &'a FixedSizeBinaryArray {
+    fn iter(&self) -> ArrayIter<Self> {
+        FixedSizeBinaryArray::iter(self)
+    }
+}
+
 impl PartialEq for dyn Array + '_ {
     fn eq(&self, other: &Self) -> bool {
         self.to_data().eq(&other.to_data())