Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/13758#discussion_r67997326
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/GenericArrayData.scala
---
@@ -142,3 +164,415 @@ class GenericArrayData(val array: Array[Any]) extends
ArrayData {
result
}
}
+
+final class GenericIntArrayData(private val primitiveArray: Array[Int])
+ extends GenericArrayData(Array.empty) {
+ override def array(): Array[Any] = primitiveArray.toArray
+
+ override def copy(): ArrayData = new GenericIntArrayData(primitiveArray)
+
+ override def numElements(): Int = primitiveArray.length
+
+ override def isNullAt(ordinal: Int): Boolean = false
+ override def getInt(ordinal: Int): Int = primitiveArray(ordinal)
+ override def toIntArray(): Array[Int] = {
+ val array = new Array[Int](numElements)
+ System.arraycopy(primitiveArray, 0, array, 0, numElements)
+ array
+ }
+ override def toString(): String = primitiveArray.mkString("[", ",", "]")
+
+ override def equals(o: Any): Boolean = {
--- End diff --
I should implement ```equals()``` and ```hashCode()``` for classes related
to ```GenericArrayData```
I already implemented type specialized ```equals()``` and ```hashCode()```
in ```Generic<PrimitiveTypeArray>ArrayData```. An issue in ```equals()``` and
```hashCode``` of ```GenericRefArrayData``` is that a type of each element may
be different since they are hold in ```Array[Any]```.
If I misunderstood your suggestion, could you please let me know?
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