org.springframework.data.rest.core.projection

Class ProxyProjectionFactory

java.lang.Object

org.springframework.data.rest.core.projection.ProxyProjectionFactory

All Implemented Interfaces:

ProjectionFactory

public class ProxyProjectionFactory
extends Object
implements ProjectionFactory

A ProjectionFactory to create JDK proxies to back interfaces and handle method invocations on them. By default two different kinds of methods are supported:

1. Bean property accessor methods - invocations will be delegated into a property lookup on the target instance.
2. Arbitrary methods annotated with Value to contain a SpEL expression, which will be evaluated on invocation. The expressions can use target to refer to the proxy target.

In case the dlegating lookups result in an object of different type that the projection interface method's return type, another projection will be created to transparently mitigate between the types.

Author:

Oliver Gierke

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ProxyProjectionFactory.TargetClassAware Extension of TargetClassAware to be able to ignore the getter on JSON rendering.

Constructor Summary

Constructors

Constructor and Description
ProxyProjectionFactory(BeanFactory beanFactory) Creates a new ProxyProjectionFactory using the given BeanFactory.

Method Summary

Modifier and Type	Method and Description
<T> T	createProjection(Object source, Class<T> projectionType) Creates a projection of the given type for the given source object.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProxyProjectionFactory

public ProxyProjectionFactory(BeanFactory beanFactory)

Creates a new ProxyProjectionFactory using the given BeanFactory.

Parameters:

beanFactory - can be null. If null, SpEL expressions at projection interfaces cannot use bean references.

Method Detail

createProjection

public <T> T createProjection(Object source,
                              Class<T> projectionType)

Description copied from interface: ProjectionFactory

Creates a projection of the given type for the given source object. The individual mapping strategy is defined by the implementations.

Specified by:

createProjection in interface ProjectionFactory

Parameters:

source - the object to create a projection for, can be null

projectionType - the type to create.

Returns: