From e8d8c8d2b1f60e85524cb806926e8a3e0de529aa Mon Sep 17 00:00:00 2001
From: yanhuqing <yanhuqing666@gmail.com>
Date: Tue, 19 Mar 2019 11:34:13 +0800
Subject: [PATCH] order by add equals function #1160

---
 .../java/com/actiontech/dble/plan/Order.java     | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/main/java/com/actiontech/dble/plan/Order.java b/src/main/java/com/actiontech/dble/plan/Order.java
index 980172b55..41d4abc3b 100644
--- a/src/main/java/com/actiontech/dble/plan/Order.java
+++ b/src/main/java/com/actiontech/dble/plan/Order.java
@@ -49,4 +49,20 @@ public class Order {
         return new Order(item.cloneStruct(), sortOrder);
     }
 
+    @Override
+    public int hashCode() {
+        return sortOrder.name.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof Order) {
+            Order order = (Order) obj;
+            return this.getItem().equals(order.getItem()) && this.getSortOrder().equals(order.getSortOrder());
+        }
+        return false;
+    }
 }