com.isomorphic.jpa

Class EMFProviderNoTransactions

com.isomorphic.jpa.EMFProviderLMT

com.isomorphic.jpa.EMFProviderNoTransactions

All Implemented Interfaces:

EMFProviderInterface

public class EMFProviderNoTransactions
extends EMFProviderLMT

EMF provider for Google Application Engine mode without transactions usage.

Name of persistence unit can be read from jpa.persistenceUnitName property. EntityManagerFactory is created in static initialization block and used to create EntityManager objects.

Field Summary

Fields inherited from class com.isomorphic.jpa.EMFProviderLMT

emf

Fields inherited from interface com.isomorphic.jpa.EMFProviderInterface

ENTITY_MANAGER, ENTITY_MANAGER_FACTORY, JPA_ENTITY_MANAGER, JPA_ENTITY_MANAGER_FACTORY, JPA_PERSISTENCE_UNIT_NAME, JPA_TRANSACTION, PERSISTENCE_UNIT_NAME, TRANSACTION

Constructor Summary

Constructors

Constructor and Description
EMFProviderNoTransactions() Creates new EMF provider.
EMFProviderNoTransactions(java.util.Properties config) Creates new EMF provider.
EMFProviderNoTransactions(java.lang.String persistenceUnitName) Creates new EMF provider with specified persistence unit name.

Method Summary

Methods

Modifier and Type	Method and Description
void	commitTransaction(java.lang.Object tx) Does nothing - transactions are not used.
java.lang.Object	getTransaction(javax.persistence.EntityManager em) Transactions are not used - always returns null.
void	rollbackTransaction(java.lang.Object tx) Does nothing - transactions are not used.

Methods inherited from class com.isomorphic.jpa.EMFProviderLMT

get, getEntityManager, returnEntityManager

Constructor Detail

EMFProviderNoTransactions

public EMFProviderNoTransactions()

Creates new EMF provider. Name of persistence unit is read from jpa.persistenceUnitName property.

EMFProviderNoTransactions

public EMFProviderNoTransactions(java.util.Properties config)

Creates new EMF provider. Name of persistence unit is read from provided persistenceUnitName property.

Parameters:

config - Properties for provider configuration.

EMFProviderNoTransactions

public EMFProviderNoTransactions(java.lang.String persistenceUnitName)

Creates new EMF provider with specified persistence unit name.

Parameters:

persistenceUnitName - String name of persistence unit.

Method Detail

getTransaction

public java.lang.Object getTransaction(javax.persistence.EntityManager em)
                                throws java.lang.Exception

Transactions are not used - always returns null.

Specified by:

getTransaction in interface EMFProviderInterface

Overrides:

getTransaction in class EMFProviderLMT

Parameters:

em - EntityManager needed if joining to existing transaction or starting transaction locally.

Returns:

Object always returns null.

Throws:

javax.persistence.PersistenceException - if unable to acquire or open transaction.

java.lang.Exception - if unable to acquire or open transaction.

commitTransaction

public void commitTransaction(java.lang.Object tx)
                       throws java.lang.Exception

Does nothing - transactions are not used.

Specified by:

commitTransaction in interface EMFProviderInterface

Overrides:

commitTransaction in class EMFProviderLMT

Parameters:

tx - Object transaction to be commited.

Throws:

java.lang.Exception - occured while committing transaction.

rollbackTransaction

public void rollbackTransaction(java.lang.Object tx)

Does nothing - transactions are not used.

Specified by:

rollbackTransaction in interface EMFProviderInterface

Overrides:

rollbackTransaction in class EMFProviderLMT

Parameters:

tx - Object transaction to be rolled back.