Class DataSourceUnwrapper

java.lang.Object

org.springframework.boot.jdbc.DataSourceUnwrapper

public final class DataSourceUnwrapper
extends Object

Unwraps a DataSource that may have been proxied or wrapped in a custom Wrapper such as DelegatingDataSource.

Since:

2.0.7

Author:

Tadaya Tsuyukubo, Stephane Nicoll

Method Summary

Modifier and Type	Method	Description
static <I, T extends I> @Nullable T	unwrap(DataSource dataSource, Class<I> unwrapInterface, Class<T> target)	Return an object that implements the given target type, unwrapping delegate or proxy if necessary using the specified unwrapInterface.
static <T> @Nullable T	unwrap(DataSource dataSource, Class<T> target)	Return an object that implements the given target type, unwrapping delegate or proxy if necessary.
static DataSource	unwrapRoot(DataSource dataSource)	Return the root DataSource by recursively unwrapping all delegating, proxy, and Wrapper layers until no further unwrapping is possible.

Methods inherited from class Object

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

Method Details

unwrap

public static <I, T extends I> @Nullable T unwrap(DataSource dataSource,
 Class<I> unwrapInterface,
 Class<T> target)

Return an object that implements the given target type, unwrapping delegate or proxy if necessary using the specified unwrapInterface.

Type Parameters:

I - the interface that the target type must implement

T - the target type

Parameters:

dataSource - the datasource to handle

unwrapInterface - the interface that the target type must implement

target - the type that the result must implement

Returns:

an object that implements the target type or null

Since:

2.3.8

See Also:

• Wrapper.unwrap(Class)

unwrap

public static <T> @Nullable T unwrap(DataSource dataSource,
 Class<T> target)

Return an object that implements the given target type, unwrapping delegate or proxy if necessary. Consider using unwrap(DataSource, Class, Class) as unwrapping won't be considered if target is not an interface.

Type Parameters:

T - the target type

Parameters:

dataSource - the datasource to handle

target - the type that the result must implement

Returns:

an object that implements the target type or null

unwrapRoot

public static DataSource unwrapRoot(DataSource dataSource)

Return the root DataSource by recursively unwrapping all delegating, proxy, and Wrapper layers until no further unwrapping is possible.

Parameters:

dataSource - the datasource to unwrap

Returns:

the root DataSource

Since:

4.1.0