com.neurosys.modules.etl

Class RelatedEntityPersistTransformer<E extends Identifiable<?>>

java.lang.Object

com.neurosys.modules.etl.EntityPersistTransformer<E>

com.neurosys.modules.etl.RelatedEntityPersistTransformer<E>

Type Parameters:

E - as Identifiable

All Implemented Interfaces:

FailFastAware, RealTimeWriter<E>, Writer, org.apache.commons.collections.Transformer

public class RelatedEntityPersistTransformer<E extends Identifiable<?>>
extends EntityPersistTransformer<E>

This Transformer will ensure that the entity is persisted and return back the passed in input.
During save of a parent entity explicitly deal with related entities in a custom manner. This is adapter to a DAO, Service or a transformation process , that is Transactional. Example DAO that may use this is ProductDaoImpl#getPostPersistTransformer()

Author:

Arjun Dhar

See Also:


TODO: Add unit test case

Field Summary

Fields inherited from class com.neurosys.modules.etl.EntityPersistTransformer

exceptions, failFast, messages, tm

Constructor Summary

Constructors

Constructor and Description
RelatedEntityPersistTransformer()

Method Summary

Modifier and Type	Method and Description
String	getChildEntityParentRefFieldName() The name of the Container Entity (Product) in the related Entity
javax.persistence.EntityManager	getEm()
Class	getEntityClass() Main entity Class
protected Object	getId(E entity)
String	getParentEntityFieldName() The name of the field of the related entity in the container entity (Product)
Class	getRelatedEntityClass() The type of the related entity to persist or remove
void	setChildEntityParentRefFieldName(String childEntityParentRefFieldName) The name of the Container Entity (Product) in the related Entity
void	setEm(javax.persistence.EntityManager em)
void	setEntityClass(Class entityClass) Main entity Class
void	setParentEntityFieldName(String parentEntityFieldName) The name of the field of the related entity in the container entity (Product)
void	setRelatedEntityClass(Class relatedEntityClass) The type of the related entity to persist or remove
E	write(E input) Write a record

Methods inherited from class com.neurosys.modules.etl.EntityPersistTransformer

close, getExceptions, getMessages, getTransactionDef, handleException, init, isExecuteUnderTransaction, isFailFast, isInitialized, setExceptions, setExecuteUnderTransaction, setFailFast, setMessages, setTransactionDef, transform, write

Methods inherited from class java.lang.Object

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

Constructor Detail

RelatedEntityPersistTransformer

public RelatedEntityPersistTransformer()

Method Detail

write

public E write(E input)

Description copied from interface: RealTimeWriter

Write a record

Specified by:

write in interface RealTimeWriter<E extends Identifiable<?>>

Overrides:

write in class EntityPersistTransformer<E extends Identifiable<?>>

getId

protected Object getId(E entity)

getEm

public javax.persistence.EntityManager getEm()

setEm

public void setEm(javax.persistence.EntityManager em)

getEntityClass

public Class getEntityClass()

Main entity Class

Can be null:

false

setEntityClass

public void setEntityClass(Class entityClass)

Main entity Class

Can be null:

false

getRelatedEntityClass

public Class getRelatedEntityClass()

The type of the related entity to persist or remove

Can be null:

false

setRelatedEntityClass

public void setRelatedEntityClass(Class relatedEntityClass)

The type of the related entity to persist or remove

Can be null:

false

getParentEntityFieldName

public String getParentEntityFieldName()

The name of the field of the related entity in the container entity (Product)

Can be null:

false

setParentEntityFieldName

public void setParentEntityFieldName(String parentEntityFieldName)

The name of the field of the related entity in the container entity (Product)

Can be null:

false

getChildEntityParentRefFieldName

public String getChildEntityParentRefFieldName()

The name of the Container Entity (Product) in the related Entity

Can be null:

true

setChildEntityParentRefFieldName

public void setChildEntityParentRefFieldName(String childEntityParentRefFieldName)

The name of the Container Entity (Product) in the related Entity

Can be null:

true