From a012929bc7dda870e190a879a853a91d7eb3469b Mon Sep 17 00:00:00 2001
From: mjkhan21 <mjkhan21@xit.co.kr>
Date: Mon, 17 Jul 2023 13:52:00 +0900
Subject: [PATCH] =?UTF-8?q?asList=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../cokr/xit/foundation/util/ListSupport.java    | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/main/java/cokr/xit/foundation/util/ListSupport.java b/src/main/java/cokr/xit/foundation/util/ListSupport.java
index b19d315..4e2ad0c 100644
--- a/src/main/java/cokr/xit/foundation/util/ListSupport.java
+++ b/src/main/java/cokr/xit/foundation/util/ListSupport.java
@@ -1,6 +1,7 @@
 package cokr.xit.foundation.util;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.function.Consumer;
 import java.util.stream.StreamSupport;
@@ -25,14 +26,23 @@ public class ListSupport<T> {
 		return this;
 	}
 
+	/**iterable을 List로 변환하여 반환한다.
+	 * @param iterable Collection
+	 * @return List
+	 */
+	public List<T> asList(Iterable<T> iterable) {
+		return iterable == null ? Collections.emptyList() :
+			iterable instanceof List<T> ?
+			(List<T>)iterable :
+			StreamSupport.stream(iterable.spliterator(), false).toList();
+	}
+
 	/**List로 변환할 Collection을 설정한다.
 	 * @param iterable Collection
 	 * @return 현재 ListSupport
 	 */
 	public ListSupport<T> setIterable(Iterable<T> iterable) {
-		this.list = iterable instanceof List<T> ?
-			(List<T>)iterable :
-			StreamSupport.stream(iterable.spliterator(), false).toList();
+		this.list = asList(iterable);
 		return this;
 	}