Java tutorial
/* * Copyright 2002-2017 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. * You may obtain a copy of the License at * * https://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.springframework.jdbc.datasource; import java.sql.Connection; /** * Subinterface of {@link java.sql.Connection} to be implemented by * Connection proxies. Allows access to the underlying target Connection. * * <p>This interface can be checked when there is a need to cast to a * native JDBC Connection such as Oracle's OracleConnection. Alternatively, * all such connections also support JDBC 4.0's {@link Connection#unwrap}. * * @author Juergen Hoeller * @since 1.1 * @see TransactionAwareDataSourceProxy * @see LazyConnectionDataSourceProxy * @see DataSourceUtils#getTargetConnection(java.sql.Connection) */ public interface ConnectionProxy extends Connection { /** * Return the target Connection of this proxy. * <p>This will typically be the native driver Connection * or a wrapper from a connection pool. * @return the underlying Connection (never {@code null}) */ Connection getTargetConnection(); }