Package org.springframework.data.projection

Class SpelAwareProxyProjectionFactory

java.lang.Object

org.springframework.data.projection.SpelAwareProxyProjectionFactory

All Implemented Interfaces:

Aware, BeanClassLoaderAware, BeanFactoryAware, ProjectionFactory

public class SpelAwareProxyProjectionFactory
extends Object
implements 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()	Create a new SpelAwareProxyProjectionFactory.
SpelAwareProxyProjectionFactory(ExpressionParser parser)	Create a new SpelAwareProxyProjectionFactory for a given ExpressionParser.

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 MethodInterceptor	postProcessAccessorInterceptor(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(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()

Create a new SpelAwareProxyProjectionFactory.

SpelAwareProxyProjectionFactory

public SpelAwareProxyProjectionFactory(ExpressionParser parser)

Create a new SpelAwareProxyProjectionFactory for a given ExpressionParser.

Parameters:

parser - the parser to use.

Since:

3.3

Method Details

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)
                    throws BeansException

Specified by:

setBeanFactory in interface BeanFactoryAware

Throws:

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 MethodInterceptor postProcessAccessorInterceptor(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 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: