EMFProviderSpring (SmartClient Enterprise Server API 10.0p (2021-05-26))

com.isomorphic.jpa.EMFProviderSpring

All Implemented Interfaces:

EMFProviderInterface
```
public class EMFProviderSpring
implements EMFProviderInterface
```
EMF provider for Spring framework.
Values from jpa.entityManagerFactory and jpa.transaction properties are used to locate EntityManagerFactory and JpaTransactionManager in spring application context. For this implementation to work these declarations should be in spring application context file:
To acquire spring ApplicationContext:
```
 <bean id="springApplicationContextProvider" class="com.isomorphic.spring.SpringApplicationContextProvider" />
 
```
To acquire EntityManagerFactory: <bean id="REFERENCE_TO_ENTITY_MANAGER_FACTORY" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> ... </bean> To acquire JpaTransactionManager: <bean id="REFERENCE_TO_TRANSACTION_MANAGER" class="org.springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="REFERENCE_TO_ENTITY_MANAGER_FACTORY" /> </bean>

Field Summary

Fields
Modifier and Type	Field and Description
`protected javax.persistence.EntityManagerFactory`	`emf` Holds `EntityManagerFactory`.
`protected org.springframework.orm.jpa.JpaTransactionManager`	`txm` Holds `JpaTransactionManager`.

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
`EMFProviderSpring()` Creates new EMF provider.
`EMFProviderSpring(java.util.Properties config)` Creates new EMF provider.
`EMFProviderSpring(java.lang.String entityManagerFactory, java.lang.String transaction)` Creates new EMF provider with specified context reference names.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`commitTransaction(java.lang.Object tx)` Commits specified transaction.
`javax.persistence.EntityManagerFactory`	`get()` Returns `EntityManagerFactory`.
`javax.persistence.EntityManager`	`getEntityManager()` Returns `EntityManager` created using factory.
`java.lang.Object`	`getTransaction(javax.persistence.EntityManager em)` Returns started transaction. Acquires transaction via `JpaTransactionManager.getTransaction (null)`.
`void`	`returnEntityManager(javax.persistence.EntityManager em)` Closes `EntityManager`.
`void`	`rollbackTransaction(java.lang.Object tx)` Rolls back specified transaction.

- Field Detail
  - emf
```
protected javax.persistence.EntityManagerFactory emf
```
    Holds EntityManagerFactory.
  - txm
```
protected org.springframework.orm.jpa.JpaTransactionManager txm
```
    Holds JpaTransactionManager.
- Constructor Detail
  - EMFProviderSpring
```
public EMFProviderSpring()
```
    Creates new EMF provider. Values from jpa.entityManagerFactory and jpa.transaction properties are used to locate EntityManagerFactory and JpaTransactionManager in spring application context.
  - EMFProviderSpring
```
public EMFProviderSpring(java.util.Properties config)
```
    Creates new EMF provider. Values from provided properties entityManagerFactory and transaction are used to locate EntityManagerFactory and JpaTransactionManager in spring application context.
    
    Parameters:
    config - Properties for provider configuration.
  - EMFProviderSpring
```
public EMFProviderSpring(java.lang.String entityManagerFactory,
                 java.lang.String transaction)
```
    Creates new EMF provider with specified context reference names.
    
    Parameters:
    entityManagerFactory - String name of context reference to entity manager factory.
    transaction - String name of context reference to transaction manager.
- Method Detail
  - get
```
public javax.persistence.EntityManagerFactory get()
```
    Returns EntityManagerFactory.
    
    Specified by:
    
    get in interface EMFProviderInterface
    
    Returns:
    EntityManagerFactory acquired from spring application context.
  - getEntityManager
```
public javax.persistence.EntityManager getEntityManager()
                                                 throws javax.persistence.PersistenceException
```
    Returns EntityManager created using factory.
    
    Specified by:
    
    getEntityManager in interface EMFProviderInterface
    
    Returns:
    EntityManager for persistence operations.
    
    Throws:
    
    javax.persistence.PersistenceException - if unable to acquire EntityManager.
  - returnEntityManager
```
public void returnEntityManager(javax.persistence.EntityManager em)
```
    Closes EntityManager.
    
    Specified by:
    
    returnEntityManager in interface EMFProviderInterface
    
    Parameters:
    em - EntityManager which should be closed.
  - getTransaction
```
public java.lang.Object getTransaction(javax.persistence.EntityManager em)
                                throws java.lang.Exception
```
    Returns started transaction.
    Acquires transaction via JpaTransactionManager.getTransaction (null).
    
    Specified by:
    
    getTransaction in interface EMFProviderInterface
    
    Parameters:
    em - EntityManager needed if joining to existing transaction or starting transaction locally.
    
    Returns:
    Object Already started transaction for persistence operations.
    
    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
```
    Commits specified transaction.
    
    Specified by:
    
    commitTransaction in interface EMFProviderInterface
    
    Parameters:
    tx - Object transaction to be committed.
    
    Throws:
    
    java.lang.Exception - occurred while committing transaction.
  - rollbackTransaction
```
public void rollbackTransaction(java.lang.Object tx)
```
    Rolls back specified transaction.
    
    Specified by:
    
    rollbackTransaction in interface EMFProviderInterface
    
    Parameters:
    tx - Object transaction to be rolled back.

Class EMFProviderSpring

Field Summary

Fields inherited from interface com.isomorphic.jpa.EMFProviderInterface

Constructor Summary

Method Summary

Field Detail

emf

txm

Constructor Detail

EMFProviderSpring

EMFProviderSpring

EMFProviderSpring

Method Detail

get

getEntityManager

returnEntityManager

getTransaction

commitTransaction

rollbackTransaction