HibernateJpaDialect correctly closes borrowed connections even for nested JDBC executions (SPR-7393)

org.springframework.jdbc/src/main/java/org/springframework/jdbc/datasource/ConnectionHolder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2007 the original author or authors.
+ * Copyright 2002-2010 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -189,7 +189,7 @@ public class ConnectionHolder extends ResourceHolderSupport {
 	@Override
 	public void released() {
 		super.released();
-		if (this.currentConnection != null) {
+		if (!isOpen() && this.currentConnection != null) {
 			this.connectionHandle.releaseConnection(this.currentConnection);
 			this.currentConnection = null;
 		}