From 6252947232558c7a8a8ad24c2e4ed0b80be52b6a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EC=84=A0=EC=9A=B0?= <seonwoo960000@toss.im>
Date: Mon, 27 Jan 2025 19:49:10 +0900
Subject: [PATCH] Fix the logic on determining whether connection is closed

---
 .../java/org/github/tursodatabase/core/LimboConnection.java    | 1 -
 .../java/org/github/tursodatabase/jdbc4/JDBC4Connection.java   | 3 +--
 .../org/github/tursodatabase/jdbc4/JDBC4ConnectionTest.java    | 3 +++
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/bindings/java/src/main/java/org/github/tursodatabase/core/LimboConnection.java b/bindings/java/src/main/java/org/github/tursodatabase/core/LimboConnection.java
index 402218b87..34e5692e3 100644
--- a/bindings/java/src/main/java/org/github/tursodatabase/core/LimboConnection.java
+++ b/bindings/java/src/main/java/org/github/tursodatabase/core/LimboConnection.java
@@ -31,7 +31,6 @@ public abstract class LimboConnection implements Connection {
   public LimboConnection(String url, String filePath, Properties properties) throws SQLException {
     this.database = open(url, filePath, properties);
     this.connectionPtr = this.database.connect();
-    this.closed = true;
   }
 
   private static AbstractDB open(String url, String filePath, Properties properties)
diff --git a/bindings/java/src/main/java/org/github/tursodatabase/jdbc4/JDBC4Connection.java b/bindings/java/src/main/java/org/github/tursodatabase/jdbc4/JDBC4Connection.java
index 2fa24b2ea..3c32ffaf2 100644
--- a/bindings/java/src/main/java/org/github/tursodatabase/jdbc4/JDBC4Connection.java
+++ b/bindings/java/src/main/java/org/github/tursodatabase/jdbc4/JDBC4Connection.java
@@ -88,8 +88,7 @@ public class JDBC4Connection extends LimboConnection {
 
   @Override
   public boolean isClosed() throws SQLException {
-    // TODO
-    return false;
+    return super.isClosed();
   }
 
   @Override
diff --git a/bindings/java/src/test/java/org/github/tursodatabase/jdbc4/JDBC4ConnectionTest.java b/bindings/java/src/test/java/org/github/tursodatabase/jdbc4/JDBC4ConnectionTest.java
index cda7fce94..1bc4fb526 100644
--- a/bindings/java/src/test/java/org/github/tursodatabase/jdbc4/JDBC4ConnectionTest.java
+++ b/bindings/java/src/test/java/org/github/tursodatabase/jdbc4/JDBC4ConnectionTest.java
@@ -68,13 +68,16 @@ class JDBC4ConnectionTest {
 
   @Test
   void calling_close_multiple_times_throws_no_exception() throws Exception {
+    assertFalse(connection.isClosed());
     connection.close();
+    assertTrue(connection.isClosed());
     connection.close();
   }
 
   @Test
   void calling_methods_on_closed_connection_should_throw_exception() throws Exception {
     connection.close();
+    assertTrue(connection.isClosed());
     assertThrows(
         SQLException.class,
         () ->