Class UserCredentialsDataSourceAdapter

All Implemented Interfaces:
Wrapper, CommonDataSource, DataSource, InitializingBean
Direct Known Subclasses:

public class UserCredentialsDataSourceAdapter extends DelegatingDataSource
An adapter for a target JDBC DataSource, applying the specified user credentials to every standard getConnection() call, implicitly invoking getConnection(username, password) on the target. All other methods simply delegate to the corresponding methods of the target DataSource.

Can be used to proxy a target JNDI DataSource that does not have user credentials configured. Client code can work with this DataSource as usual, using the standard getConnection() call.

In the following example, client code can simply transparently work with the preconfigured "myDataSource", implicitly accessing "myTargetDataSource" with the specified user credentials.

 <bean id="myTargetDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
   <property name="jndiName" value="java:comp/env/jdbc/myds"/>

 <bean id="myDataSource" class="org.springframework.jdbc.datasource.UserCredentialsDataSourceAdapter">
   <property name="targetDataSource" ref="myTargetDataSource"/>
   <property name="username" value="myusername"/>
   <property name="password" value="mypassword"/>

If the "username" is empty, this proxy will simply delegate to the standard getConnection() method of the target DataSource. This can be used to keep a UserCredentialsDataSourceAdapter bean definition just for the option of implicitly passing in user credentials if the particular target DataSource requires it.

Juergen Hoeller
See Also: