Package org.springframework.data.projection

Class SpelAwareProxyProjectionFactory

java.lang.Object

org.springframework.data.projection.SpelAwareProxyProjectionFactory

All Implemented Interfaces:

org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanClassLoaderAware, org.springframework.beans.factory.BeanFactoryAware, ProjectionFactory

public class SpelAwareProxyProjectionFactory
extends Object
implements org.springframework.beans.factory.BeanFactoryAware

A ProxyProjectionFactory that adds support to use Value-annotated methods on a projection interface to evaluate the contained SpEL expression to define the outcome of the method call.

Since:

1.10

Author:

Oliver Gierke, Thomas Darimont, Mark Paluch, Jens Schauder

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	SpelAwareProxyProjectionFactory.SpelAwareProjectionInformation

Constructor Summary

Constructors

Constructor	Description
SpelAwareProxyProjectionFactory()

Method Summary

Modifier and Type	Method	Description
<T> T	createProjection(Class<T> projectionType)	Creates a projection instance for the given type.
<T> T	createProjection(Class<T> projectionType, Object source)	Creates a projection of the given type for the given source object.
protected ProjectionInformation	createProjectionInformation(Class<?> projectionType)	Creates a fresh, cacheable ProjectionInformation instance for the given projection type.
final ProjectionInformation	getProjectionInformation(Class<?> projectionType)	Returns the ProjectionInformation for the given projection type.
protected org.aopalliance.intercept.MethodInterceptor	postProcessAccessorInterceptor(org.aopalliance.intercept.MethodInterceptor interceptor, Object source, Class<?> projectionType)	Inspects the given target type for methods with Value annotations and caches the result.
void	registerMethodInvokerFactory(MethodInterceptorFactory factory)	Registers the given MethodInterceptorFactory to be used with the factory.
void	setBeanClassLoader(ClassLoader classLoader)
void	setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.data.projection.ProjectionFactory

createNullableProjection

Constructor Details

SpelAwareProxyProjectionFactory

public SpelAwareProxyProjectionFactory()

Method Details

setBeanFactory

public void setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)
                    throws org.springframework.beans.BeansException

Specified by:

setBeanFactory in interface org.springframework.beans.factory.BeanFactoryAware

Throws:

org.springframework.beans.BeansException

createProjectionInformation

protected ProjectionInformation createProjectionInformation(Class<?> projectionType)

Creates a fresh, cacheable ProjectionInformation instance for the given projection type.

Parameters:

projectionType - must not be null.

Returns:

postProcessAccessorInterceptor

protected org.aopalliance.intercept.MethodInterceptor postProcessAccessorInterceptor(org.aopalliance.intercept.MethodInterceptor interceptor,
 Object source,
 Class<?> projectionType)

Inspects the given target type for methods with Value annotations and caches the result. Will create a SpelEvaluatingMethodInterceptor if an annotation was found or return the delegate as is if not.

Parameters:

interceptor - the root MethodInterceptor.

source - The backing source object.

projectionType - the proxy target type.

Returns:

setBeanClassLoader

public void setBeanClassLoader(ClassLoader classLoader)

Specified by:

setBeanClassLoader in interface org.springframework.beans.factory.BeanClassLoaderAware

registerMethodInvokerFactory

public void registerMethodInvokerFactory(MethodInterceptorFactory factory)

Registers the given MethodInterceptorFactory to be used with the factory. Factories registered later enjoy precedence over previously registered ones.

Parameters:

factory - must not be null.

Since:

1.13

createProjection

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

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:

projectionType - the type to create, must not be null.

source - the object to create a projection for, must not be null.

Returns:

createProjection

public <T> T createProjection(Class<T> projectionType)

Description copied from interface: ProjectionFactory

Creates a projection instance for the given type.

Specified by:

createProjection in interface ProjectionFactory

Parameters:

projectionType - the type to create, must not be null.

Returns:

getProjectionInformation

public final ProjectionInformation getProjectionInformation(Class<?> projectionType)

Description copied from interface: ProjectionFactory

Returns the ProjectionInformation for the given projection type.

Specified by:

getProjectionInformation in interface ProjectionFactory

Parameters:

projectionType - must not be null.

Returns: