From 75588fc40fbeb3d8e75e9b4187b08207ea6c432d Mon Sep 17 00:00:00 2001
From: Jack Yu <jackysp@gmail.com>
Date: Fri, 24 Nov 2023 19:47:41 +0800
Subject: [PATCH] client: check connection status before roll back transactions

Signed-off-by: Jack Yu <jackysp@gmail.com>
---
 src/client/jTPCCConnection.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/client/jTPCCConnection.java b/src/client/jTPCCConnection.java
index bb36623..912694e 100644
--- a/src/client/jTPCCConnection.java
+++ b/src/client/jTPCCConnection.java
@@ -316,6 +316,8 @@ public void commit()
     public void rollback()
 	throws SQLException
     {
+	if (!dbConn.isClosed()) {
 	dbConn.rollback();
+	}
     }
 }