From 8f279a88e2fe3c553228e1178768737360b2aa39 Mon Sep 17 00:00:00 2001
From: Yuhao Yang <hhbyyh@gmail.com>
Date: Tue, 26 Apr 2016 16:39:56 +0800
Subject: [PATCH] tostring for frequent itemsets

---
 .../src/main/scala/org/apache/spark/mllib/fpm/FPGrowth.scala  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mllib/src/main/scala/org/apache/spark/mllib/fpm/FPGrowth.scala b/mllib/src/main/scala/org/apache/spark/mllib/fpm/FPGrowth.scala
index 4f4996f3be617..9166faa54de56 100644
--- a/mllib/src/main/scala/org/apache/spark/mllib/fpm/FPGrowth.scala
+++ b/mllib/src/main/scala/org/apache/spark/mllib/fpm/FPGrowth.scala
@@ -327,5 +327,9 @@ object FPGrowth {
     def javaItems: java.util.List[Item] = {
       items.toList.asJava
     }
+
+    override def toString: String = {
+      s"${items.mkString("{", ",", "}")}: $freq"
+    }
   }
 }