Package org.openxava.model.impl

Class JPAPersistenceProvider

java.lang.Object

org.openxava.model.impl.POJOPersistenceProviderBase

org.openxava.model.impl.JPAPersistenceProvider

All Implemented Interfaces:

Serializable, IPersistenceProvider

public class JPAPersistenceProvider
extends POJOPersistenceProviderBase

Persistence Manager for EJB3 JPA.

Author:

Javier Paniza

See Also:

• Serialized Form

Method Summary

Modifier and Type	Method	Description
void	begin()	Mark the starting of the unit of work associated to this thread.
void	commit()	Commit the work made by this persistent provider.
protected Object	createQuery(String query)	Creates a query, it can be Hibernate query or JPA query.
ITabProvider	createTabProvider()	Provides tabular data.
protected Object	find(Class pojoClass, Serializable key)	Return the object associated to the sent key.
void	flush()	Save in database all persistent data still in memory.
static JPAPersistenceProvider	getInstance()
protected Object	getUniqueResult(Object query)	Returns the unique result of the sent query.
protected void	persist(Object object)	Marks the object as persistent.
void	reassociate(Object entity)	Reassociates a detached object to its persistent storage.
void	refreshIfManaged(Object object)	Refresh the state of the instance from the database, overwriting changes made to the entity, if any.
void	remove(MetaModel metaModel, Map keyValues)	Remove the object from persistent storage.
void	rollback()	Rollback the work made by this persistent provider.
protected void	setParameterToQuery(Object query, String name, Object value)	Sets the parameter to the indicated query.

Methods inherited from class org.openxava.model.impl.POJOPersistenceProviderBase

create, createAggregate, find, find, find, findByAnyProperty, findByKeyUsingQuery, getContainer, getKey, getModelName, keyToMap, moveCollectionElement, toPropertiesContainer

Methods inherited from class java.lang.Object

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

Method Details

getInstance

public static JPAPersistenceProvider getInstance()

find

protected Object find(Class pojoClass,
 Serializable key)

Description copied from class: POJOPersistenceProviderBase

Return the object associated to the sent key.

Specified by:

find in class POJOPersistenceProviderBase

persist

protected void persist(Object object)

Description copied from class: POJOPersistenceProviderBase

Marks the object as persistent.

Specified by:

persist in class POJOPersistenceProviderBase

remove

public void remove(MetaModel metaModel,
 Map keyValues)
            throws javax.ejb.RemoveException,
XavaException

Description copied from interface: IPersistenceProvider

Remove the object from persistent storage.

Throws:

javax.ejb.RemoveException

XavaException

begin

public void begin()

Description copied from interface: IPersistenceProvider

Mark the starting of the unit of work associated to this thread.

This method may be empty (for example in case of using CMT).

commit

public void commit()

Description copied from interface: IPersistenceProvider

Commit the work made by this persistent provider.

This method may be empty (for example in case of using CMT).

rollback

public void rollback()

Description copied from interface: IPersistenceProvider

Rollback the work made by this persistent provider.

This method may be empty (for example in case of using CMT).

reassociate

public void reassociate(Object entity)

Description copied from interface: IPersistenceProvider

Reassociates a detached object to its persistent storage.

This is for use when an object is serialized using RMI/IIOP, and need to reassociato to its persistent storage.
This method may be empty, because in some technologies has no sense.

flush

public void flush()

Description copied from interface: IPersistenceProvider

Save in database all persistent data still in memory.

This method may be empty, because in some technologies has no sense.

createQuery

protected Object createQuery(String query)

Description copied from class: POJOPersistenceProviderBase

Creates a query, it can be Hibernate query or JPA query.

Specified by:

createQuery in class POJOPersistenceProviderBase

setParameterToQuery

protected void setParameterToQuery(Object query,
 String name,
 Object value)

Description copied from class: POJOPersistenceProviderBase

Sets the parameter to the indicated query.

The query is of the type returned by createQuery method.

Specified by:

setParameterToQuery in class POJOPersistenceProviderBase

getUniqueResult

protected Object getUniqueResult(Object query)

Description copied from class: POJOPersistenceProviderBase

Returns the unique result of the sent query.

It does not fail if there more than one match, in this case must returns the first one.

Specified by:

getUniqueResult in class POJOPersistenceProviderBase

Parameters:

query - Of the type returned by createQuery method.

Returns:

Null if not result.

refreshIfManaged

public void refreshIfManaged(Object object)

Description copied from interface: IPersistenceProvider

Refresh the state of the instance from the database, overwriting changes made to the entity, if any.

If the object is null or it's not managed simply do nothing, but not fails.
This method may be empty, because in some technologies has no sense.

createTabProvider

public ITabProvider createTabProvider()

Description copied from interface: IPersistenceProvider

Provides tabular data.