Avoid log statements between resource opening and returning

Issue: SPR-17559

spring-jdbc/src/main/java/org/springframework/jdbc/datasource/DataSourceUtils.java

 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -115,7 +115,6 @@ public abstract class DataSourceUtils {
 		Connection con = fetchConnection(dataSource);
 
 		if (TransactionSynchronizationManager.isSynchronizationActive()) {
-			logger.debug("Registering transaction synchronization for JDBC Connection");
 			// Use same Connection for further JDBC actions within the transaction.
 			// Thread-bound object will get removed by synchronization at transaction completion.
 			ConnectionHolder holderToUse = conHolder;
@@ -337,7 +336,6 @@ public abstract class DataSourceUtils {
 				return;
 			}
 		}
-		logger.debug("Returning JDBC Connection to DataSource");
 		doCloseConnection(con, dataSource);
 	}
 

spring-orm/src/main/java/org/springframework/orm/jpa/EntityManagerFactoryUtils.java

@@ -268,7 +268,6 @@ public abstract class EntityManagerFactoryUtils {
 
 		// Use same EntityManager for further JPA operations within the transaction.
 		// Thread-bound object will get removed by synchronization at transaction completion.
-		logger.debug("Registering transaction synchronization for JPA EntityManager");
 		emHolder = new EntityManagerHolder(em);
 		if (synchronizedWithTransaction) {
 			Object transactionData = prepareTransaction(em, emf);
@@ -415,7 +414,6 @@ public abstract class EntityManagerFactoryUtils {
 	 */
 	public static void closeEntityManager(@Nullable EntityManager em) {
 		if (em != null) {
-			logger.debug("Closing JPA EntityManager");
 			try {
 				if (em.isOpen()) {
 					em.close();

spring-tx/src/main/java/org/springframework/jca/cci/connection/ConnectionFactoryUtils.java

 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -128,7 +128,6 @@ public abstract class ConnectionFactoryUtils {
 		Connection con = cf.getConnection();
 
 		if (TransactionSynchronizationManager.isSynchronizationActive()) {
-			logger.debug("Registering transaction synchronization for CCI Connection");
 			conHolder = new ConnectionHolder(con);
 			conHolder.setSynchronizedWithTransaction(true);
 			TransactionSynchronizationManager.registerSynchronization(new ConnectionSynchronization(conHolder, cf));