Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/4115#discussion_r23209879
--- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/Row.scala ---
@@ -291,12 +309,61 @@ trait Row extends Seq[Any] with Serializable {
/** Returns true if there are any NULL values in this row. */
def anyNull: Boolean = {
- val l = length
+ val len = length
var i = 0
- while (i < l) {
+ while (i < len) {
if (isNullAt(i)) { return true }
i += 1
}
false
}
+
+ override def equals(that: Any): Boolean = that match {
+ case null => false
+ case that: Row =>
+ if (this.length != that.length) {
+ return false
+ }
+ var i = 0
+ val len = this.length
+ while (i < len) {
+ if (apply(i) != that.apply(i)) {
+ return false
+ }
+ i += 1
+ }
+ true
+ case _ => false
+ }
+
+ override def hashCode: Int = {
+ // Using Scala's Seq hash code implementation.
+ var n = 0
+ var h = MurmurHash3.seqSeed
+ val len = length
+ while (n < len) {
+ h = MurmurHash3.mix(h, apply(n).##)
+ n += 1
+ }
+ MurmurHash3.finalizeHash(h, n)
+ }
+
+ /* ---------------------- utility methods for Scala
---------------------- */
+
+ /**
+ * Return a Scala Seq representing the row. ELements are placed in the
same order in the Seq.
+ */
+ def toSeq: Seq[Any]
--- End diff --
Would like to have a `toArray` here, since most `Row` subclasses are backed
by array, which already has plenty rich operations.
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