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

所有已实现的接口:
Wrapper, CommonDataSource, DataSource, InitializingBean
直接已知子类:
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.
从以下版本开始:
1.1
作者:
Juergen Hoeller
另请参阅:
getConnection()

构造器概要
构造器
构造器说明
DelegatingDataSource()
Create a new DelegatingDataSource.
DelegatingDataSource(DataSource targetDataSource)
Create a new DelegatingDataSource.

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`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)`
`protected DataSource`	`obtainTargetDataSource()`	Obtain the target `DataSource` for actual use (never `null`).
`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)`

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 javax.sql.CommonDataSource
createShardingKeyBuilder

从接口继承的方法 javax.sql.DataSource
createConnectionBuilder

- 构造器详细资料
  - DelegatingDataSource
```
public DelegatingDataSource()
```
    Create a new DelegatingDataSource.
    另请参阅:
    setTargetDataSource(javax.sql.DataSource)
  - DelegatingDataSource
```
public DelegatingDataSource(DataSource targetDataSource)
```
    Create a new DelegatingDataSource.
    参数:
    targetDataSource - the target DataSource
- 方法详细资料
  - setTargetDataSource
```
public void setTargetDataSource(@Nullable
                                DataSource targetDataSource)
```
    Set the target DataSource that this DataSource should delegate to.
  - getTargetDataSource
```
@Nullable
public DataSource getTargetDataSource()
```
    Return the target DataSource that this DataSource should delegate to.
  - obtainTargetDataSource
```
protected DataSource obtainTargetDataSource()
```
    Obtain the target DataSource for actual use (never null).
    从以下版本开始:
    5.0
  - afterPropertiesSet
```
public void afterPropertiesSet()
```
    从接口复制的说明: 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.
    指定者:
    afterPropertiesSet 在接口中 InitializingBean
  - getConnection
```
public Connection getConnection()
                         throws SQLException
```
    指定者:
    getConnection 在接口中 DataSource
    抛出:
    SQLException
  - getConnection
```
public Connection getConnection(String username,
                                String password)
                         throws SQLException
```
    指定者:
    getConnection 在接口中 DataSource
    抛出:
    SQLException
  - getLogWriter
```
public PrintWriter getLogWriter()
                         throws SQLException
```
    指定者:
    getLogWriter 在接口中 CommonDataSource
    指定者:
    getLogWriter 在接口中 DataSource
    抛出:
    SQLException
  - setLogWriter
```
public void setLogWriter(PrintWriter out)
                  throws SQLException
```
    指定者:
    setLogWriter 在接口中 CommonDataSource
    指定者:
    setLogWriter 在接口中 DataSource
    抛出:
    SQLException
  - getLoginTimeout
```
public int getLoginTimeout()
                    throws SQLException
```
    指定者:
    getLoginTimeout 在接口中 CommonDataSource
    指定者:
    getLoginTimeout 在接口中 DataSource
    抛出:
    SQLException
  - setLoginTimeout
```
public void setLoginTimeout(int seconds)
                     throws SQLException
```
    指定者:
    setLoginTimeout 在接口中 CommonDataSource
    指定者:
    setLoginTimeout 在接口中 DataSource
    抛出:
    SQLException
  - unwrap
```
public <T> T unwrap(Class<T> iface)
             throws SQLException
```
    指定者:
    unwrap 在接口中 Wrapper
    抛出:
    SQLException
  - isWrapperFor
```
public boolean isWrapperFor(Class<?> iface)
                     throws SQLException
```
    指定者:
    isWrapperFor 在接口中 Wrapper
    抛出:
    SQLException
  - getParentLogger
```
public Logger getParentLogger()
```
    指定者:
    getParentLogger 在接口中 CommonDataSource

构造器	说明
`DelegatingDataSource()`	Create a new DelegatingDataSource.
`DelegatingDataSource(DataSource targetDataSource)`	Create a new DelegatingDataSource.

类 DelegatingDataSource

构造器概要

方法概要

从类继承的方法 java.lang.Object

从接口继承的方法 javax.sql.CommonDataSource

从接口继承的方法 javax.sql.DataSource

构造器详细资料

DelegatingDataSource

DelegatingDataSource

方法详细资料

setTargetDataSource

getTargetDataSource

obtainTargetDataSource

afterPropertiesSet

getConnection

getConnection

getLogWriter

setLogWriter

getLoginTimeout

setLoginTimeout

unwrap

isWrapperFor

getParentLogger