From cd33e09d6974177fff01b99376675ec8bb16ca11 Mon Sep 17 00:00:00 2001
From: what <what-00@qq.com>
Date: Wed, 21 Jun 2023 09:56:28 +0800
Subject: [PATCH] =?UTF-8?q?[fix]=20=E5=A4=9A=E6=AC=A1=E8=B0=83=E7=94=A8=20?=
 =?UTF-8?q?Open()=20=E9=94=99=E8=AF=AF?=
MIME-Version: 1.0
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---
 db.go | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/db.go b/db.go
index c31962f..ff1d1f6 100644
--- a/db.go
+++ b/db.go
@@ -17,22 +17,20 @@ func (d *DB) SetLogger(f func(log Log)) *DB {
 }
 
 func Open(config map[string]DBConfig) *DB {
-	var configP = make(map[string]*DBConfig)
+	if Engine == nil {
+		Engine = &DB{
+			DatabaseManager: DatabaseManager{
+				Configs:     make(map[string]*DBConfig),
+				Connections: make(map[string]*Connection),
+			},
+		}
+	}
 
 	for name := range config {
 		c := config[name]
-		configP[name] = &c
+		Engine.Configs[name] = &c
 	}
 
-	db := DB{
-		DatabaseManager: DatabaseManager{
-			Configs:     configP,
-			Connections: make(map[string]*Connection),
-		},
-	}
-
-	Engine = &db
-
 	return Engine
 }