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}