Validate ArrayData type when converting to Array (apache#2834)

arrow-array/src/array/binary_array.rs

@@ -290,6 +290,8 @@ impl<OffsetSize: OffsetSizeTrait> From<ArrayData> for GenericBinaryArray<OffsetS
         let values = data.buffers()[1].as_ptr();
         Self {
             data,
+            // SAFETY:
+            // ArrayData must be valid, and validated data type above
             value_offsets: unsafe { RawPtrBox::new(offsets) },
             value_data: unsafe { RawPtrBox::new(values) },
         }
@@ -826,6 +828,13 @@ mod tests {
         binary_array.value(4);
     }
 
+    #[test]
+    #[should_panic(expected = "[Large]BinaryArray expects Datatype::[Large]Binary")]
+    fn test_binary_array_validation() {
+        let array = BinaryArray::from_iter_values(&[&[1, 2]]);
+        let _ = LargeBinaryArray::from(array.into_data());
+    }
+
     #[test]
     fn test_binary_array_all_null() {
         let data = vec![None];

arrow-array/src/array/boolean_array.rs

@@ -201,6 +201,13 @@ impl From<Vec<Option<bool>>> for BooleanArray {
 
 impl From<ArrayData> for BooleanArray {
     fn from(data: ArrayData) -> Self {
+        assert_eq!(
+            data.data_type(),
+            &DataType::Boolean,
+            "BooleanArray expected ArrayData with type {} got {}",
+            DataType::Boolean,
+            data.data_type()
+        );
         assert_eq!(
             data.buffers().len(),
             1,
@@ -209,6 +216,8 @@ impl From<ArrayData> for BooleanArray {
         let ptr = data.buffers()[0].as_ptr();
         Self {
             data,
+            // SAFETY:
+            // ArrayData must be valid, and validated data type above
             raw_values: unsafe { RawPtrBox::new(ptr) },
         }
     }
@@ -414,4 +423,12 @@ mod tests {
         };
         drop(BooleanArray::from(data));
     }
+
+    #[test]
+    #[should_panic(
+        expected = "BooleanArray expected ArrayData with type Boolean got Int32"
+    )]
+    fn test_from_array_data_validation() {
+        let _ = BooleanArray::from(ArrayData::new_empty(&DataType::Int32));
+    }
 }

arrow-array/src/array/decimal_array.rs

@@ -407,13 +407,21 @@ impl<T: DecimalType> From<ArrayData> for DecimalArray<T> {
             "DecimalArray data should contain 1 buffer only (values)"
         );
         let values = data.buffers()[0].as_ptr();
-        let (precision, scale) = match (data.data_type(), Self::VALUE_LENGTH) {
-            (DataType::Decimal128(precision, scale), 16)
-            | (DataType::Decimal256(precision, scale), 32) => (*precision, *scale),
-            _ => panic!("Expected data type to be Decimal"),
+        let (precision, scale) = match (data.data_type(), Self::DEFAULT_TYPE) {
+            (DataType::Decimal128(precision, scale), DataType::Decimal128(_, _))
+            | (DataType::Decimal256(precision, scale), DataType::Decimal256(_, _)) => {
+                (*precision, *scale)
+            }
+            _ => panic!(
+                "Expected data type to match {} got {}",
+                Self::DEFAULT_TYPE,
+                data.data_type()
+            ),
         };
         Self {
             data,
+            // SAFETY:
+            // ArrayData must be valid, and verified data type above
             value_data: unsafe { RawPtrBox::new(values) },
             precision,
             scale,
@@ -977,4 +985,13 @@ mod tests {
 
         array.value(4);
     }
+
+    #[test]
+    #[should_panic(
+        expected = "Expected data type to match Decimal256(76, 10) got Decimal128(38, 10)"
+    )]
+    fn test_from_array_data_validation() {
+        let array = Decimal128Array::from_iter_values(vec![-100, 0, 101].into_iter());
+        let _ = Decimal256Array::from(array.into_data());
+    }
 }

arrow-array/src/array/dictionary_array.rs

@@ -408,10 +408,17 @@ impl<T: ArrowPrimitiveType> From<ArrayData> for DictionaryArray<T> {
         );
 
         if let DataType::Dictionary(key_data_type, _) = data.data_type() {
-            if key_data_type.as_ref() != &T::DATA_TYPE {
-                panic!("DictionaryArray's data type must match.")
-            };
+            assert_eq!(
+                &T::DATA_TYPE,
+                key_data_type.as_ref(),
+                "DictionaryArray's data type must match, expected {} got {}",
+                T::DATA_TYPE,
+                key_data_type
+            );
+
             // create a zero-copy of the keys' data
+            // SAFETY:
+            // ArrayData is valid and verified type above
             let keys = PrimitiveArray::<T>::from(unsafe {
                 ArrayData::new_unchecked(
                     T::DATA_TYPE,
@@ -925,4 +932,13 @@ mod tests {
         let keys: Float32Array = [Some(0_f32), None, Some(3_f32)].into_iter().collect();
         DictionaryArray::<Float32Type>::try_new(&keys, &values).unwrap();
     }
+
+    #[test]
+    #[should_panic(
+        expected = "DictionaryArray's data type must match, expected Int64 got Int32"
+    )]
+    fn test_from_array_data_validation() {
+        let a = DictionaryArray::<Int32Type>::from_iter(["32"]);
+        let _ = DictionaryArray::<Int64Type>::from(a.into_data());
+    }
 }

arrow-array/src/array/list_array.rs

@@ -241,6 +241,9 @@ impl<OffsetSize: OffsetSizeTrait> GenericListArray<OffsetSize> {
 
         let values = make_array(values);
         let value_offsets = data.buffers()[0].as_ptr();
+
+        // SAFETY:
+        // Verified list type in call to `Self::get_type`
         let value_offsets = unsafe { RawPtrBox::<OffsetSize>::new(value_offsets) };
         Ok(Self {
             data,
@@ -346,6 +349,7 @@ pub type LargeListArray = GenericListArray<i64>;
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::builder::{Int32Builder, ListBuilder};
     use crate::types::Int32Type;
     use crate::Int32Array;
     use arrow_buffer::{bit_util, Buffer, ToByteSlice};
@@ -804,6 +808,18 @@ mod tests {
         drop(ListArray::from(list_data));
     }
 
+    #[test]
+    #[should_panic(
+        expected = "[Large]ListArray's datatype must be [Large]ListArray(). It is List"
+    )]
+    fn test_from_array_data_validation() {
+        let mut builder = ListBuilder::new(Int32Builder::new());
+        builder.values().append_value(1);
+        builder.append(true);
+        let array = builder.finish();
+        let _ = LargeListArray::from(array.into_data());
+    }
+
     #[test]
     fn test_list_array_offsets_need_not_start_at_zero() {
         let value_data = ArrayData::builder(DataType::Int32)

arrow-array/src/array/map_array.rs

@@ -109,6 +109,12 @@ impl From<MapArray> for ArrayData {
 
 impl MapArray {
     fn try_new_from_array_data(data: ArrayData) -> Result<Self, ArrowError> {
+        assert!(
+            matches!(data.data_type(), DataType::Map(_, _)),
+            "MapArray expected ArrayData with DataType::Map got {}",
+            data.data_type()
+        );
+
         if data.buffers().len() != 1 {
             return Err(ArrowError::InvalidArgumentError(
                 format!("MapArray data should contain a single buffer only (value offsets), had {}",
@@ -141,6 +147,8 @@ impl MapArray {
         let values = make_array(entries);
         let value_offsets = data.buffers()[0].as_ptr();
 
+        // SAFETY:
+        // ArrayData is valid, and verified type above
         let value_offsets = unsafe { RawPtrBox::<i32>::new(value_offsets) };
         unsafe {
             if (*value_offsets.as_ptr().offset(0)) != 0 {
@@ -467,6 +475,21 @@ mod tests {
         map_array.value(map_array.len());
     }
 
+    #[test]
+    #[should_panic(
+        expected = "MapArray expected ArrayData with DataType::Map got Dictionary"
+    )]
+    fn test_from_array_data_validation() {
+        // A DictionaryArray has similar buffer layout to a MapArray
+        // but the meaning of the values differs
+        let struct_t = DataType::Struct(vec![
+            Field::new("keys", DataType::Int32, true),
+            Field::new("values", DataType::UInt32, true),
+        ]);
+        let dict_t = DataType::Dictionary(Box::new(DataType::Int32), Box::new(struct_t));
+        let _ = MapArray::from(ArrayData::new_empty(&dict_t));
+    }
+
     #[test]
     fn test_new_from_strings() {
         let keys = vec!["a", "b", "c", "d", "e", "f", "g", "h"];

arrow-array/src/array/primitive_array.rs

@@ -809,6 +809,14 @@ impl<T: ArrowTimestampType> PrimitiveArray<T> {
 /// Constructs a `PrimitiveArray` from an array data reference.
 impl<T: ArrowPrimitiveType> From<ArrayData> for PrimitiveArray<T> {
     fn from(data: ArrayData) -> Self {
+        // Use discriminant to allow for decimals
+        assert_eq!(
+            std::mem::discriminant(&T::DATA_TYPE),
+            std::mem::discriminant(data.data_type()),
+            "PrimitiveArray expected ArrayData with type {} got {}",
+            T::DATA_TYPE,
+            data.data_type()
+        );
         assert_eq!(
             data.buffers().len(),
             1,
@@ -818,6 +826,8 @@ impl<T: ArrowPrimitiveType> From<ArrayData> for PrimitiveArray<T> {
         let ptr = data.buffers()[0].as_ptr();
         Self {
             data,
+            // SAFETY:
+            // ArrayData must be valid, and validated data type above
             raw_values: unsafe { RawPtrBox::new(ptr) },
         }
     }
@@ -1342,4 +1352,13 @@ mod tests {
 
         array.value(4);
     }
+
+    #[test]
+    #[should_panic(
+    expected = "PrimitiveArray expected ArrayData with type Int64 got Int32"
+    )]
+    fn test_from_array_data_validation() {
+        let foo = PrimitiveArray::<Int32Type>::from_iter([1, 2, 3]);
+        let _ = PrimitiveArray::<Int64Type>::from(foo.into_data());
+    }
 }