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: import javax.sql.DataSource;
22:
23: /**
24: * Extension of the <code>javax.sql.DataSource</code> interface, to be
25: * implemented by special DataSources that return JDBC Connections
26: * in an unwrapped fashion.
27: *
28: * <p>Classes using this interface can query whether or not the Connection
29: * should be closed after an operation. Spring's DataSourceUtils and
30: * JdbcTemplate classes automatically perform such a check.
31: *
32: * @author Rod Johnson
33: * @author Juergen Hoeller
34: * @see SingleConnectionDataSource#shouldClose
35: * @see DataSourceUtils#releaseConnection
36: * @see org.springframework.jdbc.core.JdbcTemplate
37: */
38: public interface SmartDataSource extends DataSource {
39:
40: /**
41: * Should we close this Connection, obtained from this DataSource?
42: * <p>Code that uses Connections from a SmartDataSource should always
43: * perform a check via this method before invoking <code>close()</code>.
44: * <p>Note that the JdbcTemplate class in the 'jdbc.core' package takes care of
45: * releasing JDBC Connections, freeing application code of this responsibility.
46: * @param con the Connection to check
47: * @return whether the given Connection should be closed
48: * @see java.sql.Connection#close()
49: */
50: boolean shouldClose(Connection con);
51:
52: }
|