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Java > Open Source Codes > org > springframework > jdbc > datasource > ConnectionProxy


1 /*
2  * Copyright 2002-2007 the original author or authors.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */

16
17 package org.springframework.jdbc.datasource;
18
19 import java.sql.Connection JavaDoc;
20
21 /**
22  * Subinterface of {@link java.sql.Connection} to be implemented by
23  * Connection proxies. Allows access to the underlying target Connection.
24  *
25  * <p>This interface can be checked when there is a need to cast to a
26  * native JDBC Connection such as Oracle's OracleConnection. Spring's
27  * {@link org.springframework.jdbc.support.nativejdbc.NativeJdbcExtractorAdapter}
28  * automatically detects such proxies before delegating to the actual
29  * unwrapping for a specific connection pool.
30  *
31  * @author Juergen Hoeller
32  * @since 1.1
33  * @see TransactionAwareDataSourceProxy
34  * @see LazyConnectionDataSourceProxy
35  */

36 public interface ConnectionProxy extends Connection JavaDoc {
37
38     /**
39      * Return the target Connection of this proxy.
40      * <p>This will typically be the native driver Connection
41      * or a wrapper from a connection pool.
42      * @return the underlying Connection (never <code>null</code>)
43      */

44     Connection JavaDoc getTargetConnection();
45
46 }
47
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