01: /*
02: * Copyright 2002-2007 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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;
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 {
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 getTargetConnection();
45:
46: }
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