org.springframework.jdbc.datasource
Class DelegatingDataSource

java.lang.Object
  org.springframework.jdbc.datasource.DelegatingDataSource

All Implemented Interfaces:

Wrapper, CommonDataSource, DataSource, InitializingBean

Direct Known Subclasses:

LazyConnectionDataSourceProxy, TransactionAwareDataSourceProxy, UserCredentialsDataSourceAdapter

public class DelegatingDataSource
extends Object
implements DataSource, InitializingBean

JDBC DataSource implementation that delegates all calls to a given target DataSource.

This class is meant to be subclassed, with subclasses overriding only those methods (such as getConnection()) that should not simply delegate to the target DataSource.

Since:

1.1

Author:

Juergen Hoeller

See Also:

getConnection()

Constructor Summary

DelegatingDataSource()
Create a new DelegatingDataSource.

DelegatingDataSource(DataSource targetDataSource)
Create a new DelegatingDataSource.

Method Summary

void	afterPropertiesSet() Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
Connection	getConnection()
Connection	getConnection(String username, String password)
int	getLoginTimeout()
PrintWriter	getLogWriter()
DataSource	getTargetDataSource() Return the target DataSource that this DataSource should delegate to.
boolean	isWrapperFor(Class<?> iface)
void	setLoginTimeout(int seconds)
void	setLogWriter(PrintWriter out)
void	setTargetDataSource(DataSource targetDataSource) Set the target DataSource that this DataSource should delegate to.
<T> T	unwrap(Class<T> iface)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DelegatingDataSource

public DelegatingDataSource()

Create a new DelegatingDataSource.

See Also:

setTargetDataSource(javax.sql.DataSource)

DelegatingDataSource

public DelegatingDataSource(DataSource targetDataSource)

Create a new DelegatingDataSource.

Parameters:

targetDataSource - the target DataSource

Method Detail

setTargetDataSource

public void setTargetDataSource(DataSource targetDataSource)

Set the target DataSource that this DataSource should delegate to.

getTargetDataSource

public DataSource getTargetDataSource()

Return the target DataSource that this DataSource should delegate to.

afterPropertiesSet

public void afterPropertiesSet()

Description copied from interface: InitializingBean

Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:

afterPropertiesSet in interface InitializingBean

getConnection

public Connection getConnection()
                         throws SQLException

Specified by:

getConnection in interface DataSource

Throws:

SQLException

getConnection

public Connection getConnection(String username,
                                String password)
                         throws SQLException

Specified by:

getConnection in interface DataSource

Throws:

SQLException

getLogWriter

public PrintWriter getLogWriter()
                         throws SQLException

Specified by:

getLogWriter in interface CommonDataSource

Throws:

SQLException

setLogWriter

public void setLogWriter(PrintWriter out)
                  throws SQLException

Specified by:

setLogWriter in interface CommonDataSource

Throws:

SQLException

getLoginTimeout

public int getLoginTimeout()
                    throws SQLException

Specified by:

getLoginTimeout in interface CommonDataSource

Throws:

SQLException

setLoginTimeout

public void setLoginTimeout(int seconds)
                     throws SQLException

Specified by:

setLoginTimeout in interface CommonDataSource

Throws:

SQLException

unwrap

public <T> T unwrap(Class<T> iface)
         throws SQLException

Specified by:

unwrap in interface Wrapper

Throws:

SQLException

isWrapperFor

public boolean isWrapperFor(Class<?> iface)
                     throws SQLException

Specified by:

isWrapperFor in interface Wrapper

Throws:

SQLException