From f582c6ff85cb652d62f652e584b1067d66a3fe84 Mon Sep 17 00:00:00 2001
From: Leiqing Cai <caithagoras@gmail.com>
Date: Tue, 3 Dec 2019 18:29:59 -0800
Subject: [PATCH] Add a method to compare SqlInvokedFunction

---
 .../presto/spi/function/SqlInvokedFunction.java      | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/presto-spi/src/main/java/com/facebook/presto/spi/function/SqlInvokedFunction.java b/presto-spi/src/main/java/com/facebook/presto/spi/function/SqlInvokedFunction.java
index 9f0405c4d5f5..68b3f9345f61 100644
--- a/presto-spi/src/main/java/com/facebook/presto/spi/function/SqlInvokedFunction.java
+++ b/presto-spi/src/main/java/com/facebook/presto/spi/function/SqlInvokedFunction.java
@@ -161,6 +161,18 @@ public long getRequiredVersion()
         return version.get();
     }
 
+    public boolean hasSameDefinitionAs(SqlInvokedFunction function)
+    {
+        if (function == null) {
+            throw new IllegalArgumentException("function is null");
+        }
+        return Objects.equals(parameters, function.parameters)
+                && Objects.equals(description, function.description)
+                && Objects.equals(routineCharacteristics, function.routineCharacteristics)
+                && Objects.equals(body, function.body)
+                && Objects.equals(signature, function.signature);
+    }
+
     @Override
     public boolean equals(Object obj)
     {