com.impetus.kundera.metadata.processor

Class EntityListenersProcessor

java.lang.Object

com.impetus.kundera.metadata.processor.EntityListenersProcessor

All Implemented Interfaces:

MetadataProcessor

public class EntityListenersProcessor
extends Object
implements MetadataProcessor

The MetadataProcessor implementation to scan for EntityListener class/method JPA Specifications: 1. EntityListeners classes must have a no-argument constructor. 2. Callback methods can have any visibility. 3. Callback methods must return void. 4. Callback methods must NOT throw any checked exception. 5. ExternalCallback methods must accept only entity object. 6. InternalCallback methods must NOT accept any parameter. 7. EntityListeners are state-less. 8. EnternalCallbackMethods must be fired before InternalCallbackMethods.

Author:

animesh.kumar

Field Summary

Fields

Modifier and Type	Field and Description
private static List<Class<? extends Annotation>>	JPAListenersAnnotations The Constant JPAListenersAnnotations.
private static org.slf4j.Logger	log the log used by this class.

Constructor Summary

Constructors

Constructor and Description
EntityListenersProcessor()

Method Summary

Methods

Modifier and Type	Method and Description
private void	addCallBackMethod(EntityMetadata metadata, Class<?> jpaAnnotation, CallbackMethod callbackMethod) Adds the call back method.
private List<Class<?>>	getValidJPAAnnotationsFromMethod(Class<?> clazz, Method method, int numberOfParams, Class<?> entityClazz) Gets the valid jpa annotations from method.
private boolean	isValidJPAEntityListenerAnnotation(Class<?> annotation) Checks if is valid jpa entity listener annotation.
void	process(Class<?> entityClass, EntityMetadata metadata) Process.

Methods inherited from class java.lang.Object

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

Field Detail

log

private static org.slf4j.Logger log

the log used by this class.

JPAListenersAnnotations

private static final List<Class<? extends Annotation>> JPAListenersAnnotations

The Constant JPAListenersAnnotations.

Constructor Detail

EntityListenersProcessor

public EntityListenersProcessor()

Method Detail

process

public final void process(Class<?> entityClass,
           EntityMetadata metadata)

Description copied from interface: MetadataProcessor

Process.

Specified by:

process in interface MetadataProcessor

Parameters:

entityClass - the clazz

metadata - the metadata

addCallBackMethod

private void addCallBackMethod(EntityMetadata metadata,
                     Class<?> jpaAnnotation,
                     CallbackMethod callbackMethod)

Adds the call back method.

Parameters:

metadata - the metadata

jpaAnnotation - the jpa annotation

callbackMethod - the callback method

getValidJPAAnnotationsFromMethod

private List<Class<?>> getValidJPAAnnotationsFromMethod(Class<?> clazz,
                                              Method method,
                                              int numberOfParams,
                                              Class<?> entityClazz)

Gets the valid jpa annotations from method.

Parameters:

clazz - the clazz

method - the method

numberOfParams - the number of params

Returns:

the valid jpa annotations from method

isValidJPAEntityListenerAnnotation

private boolean isValidJPAEntityListenerAnnotation(Class<?> annotation)

Checks if is valid jpa entity listener annotation.

Parameters:

annotation - the annotation

Returns:

true, if is valid jpa entity listener annotation