001/* 002 * Copyright 2002-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.jdbc.datasource; 018 019import java.sql.Connection; 020 021/** 022 * Simple interface to be implemented by handles for a JDBC Connection. 023 * Used by JpaDialect, for example. 024 * 025 * @author Juergen Hoeller 026 * @since 1.1 027 * @see SimpleConnectionHandle 028 * @see ConnectionHolder 029 */ 030@FunctionalInterface 031public interface ConnectionHandle { 032 033 /** 034 * Fetch the JDBC Connection that this handle refers to. 035 */ 036 Connection getConnection(); 037 038 /** 039 * Release the JDBC Connection that this handle refers to. 040 * <p>The default implementation is empty, assuming that the lifecycle 041 * of the connection is managed externally. 042 * @param con the JDBC Connection to release 043 */ 044 default void releaseConnection(Connection con) { 045 } 046 047}