Remove deprecated comparison kernels (#4733) (#5768)

* Remove deprecated comparison kernels (#4733)

* Fix docs

* Fix doctest

* Update arrow/src/lib.rs

Co-authored-by: Andrew Lamb <[email protected]>

---------

Co-authored-by: Andrew Lamb <[email protected]>

Author: tustvold

arrow-array/src/array/dictionary_array.rs

@@ -20,7 +20,8 @@ use crate::cast::AsArray;
 use crate::iterator::ArrayIter;
 use crate::types::*;
 use crate::{
-    make_array, Array, ArrayAccessor, ArrayRef, ArrowNativeTypeOp, PrimitiveArray, StringArray,
+    make_array, Array, ArrayAccessor, ArrayRef, ArrowNativeTypeOp, PrimitiveArray, Scalar,
+    StringArray,
 };
 use arrow_buffer::bit_util::set_bit;
 use arrow_buffer::buffer::NullBuffer;
@@ -312,6 +313,14 @@ impl<K: ArrowDictionaryKeyType> DictionaryArray<K> {
         })
     }
 
+    /// Create a new [`Scalar`] from `value`
+    pub fn new_scalar<T: Array + 'static>(value: Scalar<T>) -> Scalar<Self> {
+        Scalar::new(Self::new(
+            PrimitiveArray::new(vec![K::Native::usize_as(0)].into(), None),
+            Arc::new(value.into_inner()),
+        ))
+    }
+
     /// Create a new [`DictionaryArray`] without performing validation
     ///
     /// # Safety

arrow-array/src/array/fixed_size_binary_array.rs

@@ -17,7 +17,7 @@
 
 use crate::array::print_long_array;
 use crate::iterator::FixedSizeBinaryIter;
-use crate::{Array, ArrayAccessor, ArrayRef, FixedSizeListArray};
+use crate::{Array, ArrayAccessor, ArrayRef, FixedSizeListArray, Scalar};
 use arrow_buffer::buffer::NullBuffer;
 use arrow_buffer::{bit_util, ArrowNativeType, BooleanBuffer, Buffer, MutableBuffer};
 use arrow_data::{ArrayData, ArrayDataBuilder};
@@ -68,6 +68,12 @@ impl FixedSizeBinaryArray {
         Self::try_new(size, values, nulls).unwrap()
     }
 
+    /// Create a new [`Scalar`] from `value`
+    pub fn new_scalar(value: impl AsRef<[u8]>) -> Scalar<Self> {
+        let v = value.as_ref();
+        Scalar::new(Self::new(v.len() as _, Buffer::from(v), None))
+    }
+
     /// Create a new [`FixedSizeBinaryArray`] from the provided parts, returning an error on failure
     ///
     /// # Errors
@@ -551,6 +557,12 @@ impl From<Vec<&[u8]>> for FixedSizeBinaryArray {
     }
 }
 
+impl<const N: usize> From<Vec<&[u8; N]>> for FixedSizeBinaryArray {
+    fn from(v: Vec<&[u8; N]>) -> Self {
+        Self::try_from_iter(v.into_iter()).unwrap()
+    }
+}
+
 impl std::fmt::Debug for FixedSizeBinaryArray {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         write!(f, "FixedSizeBinaryArray<{}>\n[\n", self.value_length())?;

arrow-array/src/scalar.rs

@@ -137,6 +137,12 @@ impl<T: Array> Scalar<T> {
         assert_eq!(array.len(), 1);
         Self(array)
     }
+
+    /// Returns the inner array
+    #[inline]
+    pub fn into_inner(self) -> T {
+        self.0
+    }
 }
 
 impl<T: Array> Datum for Scalar<T> {