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
Constructors
Constructor Description
DelegatingDataSource()
Create a new DelegatingDataSource.
DelegatingDataSource(DataSource targetDataSource)
Create a new DelegatingDataSource.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`afterPropertiesSet()`	Invoked by the containing `BeanFactory` after it has set all bean properties and satisfied `BeanFactoryAware`, `ApplicationContextAware` etc.
`Connection`	`getConnection()`
`Connection`	`getConnection(String username, String password)`
`int`	`getLoginTimeout()`
`PrintWriter`	`getLogWriter()`
`Logger`	`getParentLogger()`
`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

Methods inherited from interface javax.sql.CommonDataSource
createShardingKeyBuilder

Methods inherited from interface javax.sql.DataSource
createConnectionBuilder

- 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 the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.
    This method allows the bean instance to perform validation of its overall configuration and final initialization when all bean properties have been set.
    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
    Specified by:
    getLogWriter in interface DataSource
    Throws:
    SQLException
  - setLogWriter
```
public void setLogWriter(PrintWriter out)
                  throws SQLException
```
    Specified by:
    setLogWriter in interface CommonDataSource
    Specified by:
    setLogWriter in interface DataSource
    Throws:
    SQLException
  - getLoginTimeout
```
public int getLoginTimeout()
                    throws SQLException
```
    Specified by:
    getLoginTimeout in interface CommonDataSource
    Specified by:
    getLoginTimeout in interface DataSource
    Throws:
    SQLException
  - setLoginTimeout
```
public void setLoginTimeout(int seconds)
                     throws SQLException
```
    Specified by:
    setLoginTimeout in interface CommonDataSource
    Specified by:
    setLoginTimeout in interface DataSource
    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
  - getParentLogger
```
public Logger getParentLogger()
```
    Specified by:
    getParentLogger in interface CommonDataSource

Constructor	Description
`DelegatingDataSource()`	Create a new DelegatingDataSource.
`DelegatingDataSource(DataSource targetDataSource)`	Create a new DelegatingDataSource.

Class DelegatingDataSource

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface javax.sql.CommonDataSource

Methods inherited from interface javax.sql.DataSource

Constructor Detail

DelegatingDataSource

DelegatingDataSource

Method Detail

setTargetDataSource

getTargetDataSource

afterPropertiesSet

getConnection

getConnection

getLogWriter

setLogWriter

getLoginTimeout

setLoginTimeout

unwrap

isWrapperFor

getParentLogger