org.datanucleus.api.jpa

Class JPAReplicationManager

java.lang.Object

org.datanucleus.api.jpa.JPAReplicationManager

public class JPAReplicationManager
extends Object

Manager to control the replication of objects from one datastore to another. Allow replication of specified objects, or all objects of particular types. Supports a series of properties defining the replication behaviour.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.datanucleus.util.Localiser	LOCALISER Localisation utility for output messages.
protected Properties	properties Properties defining the replication process.

Constructor Summary

Constructors

Constructor and Description
JPAReplicationManager(javax.persistence.EntityManagerFactory emf1, javax.persistence.EntityManagerFactory emf2) Constructor for replicating between source and target EMF.

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	getBooleanProperty(String key)
Properties	getProperties() Accessor for the replication properties.
void	replicate(Class... types) Method to perform the replication for all objects of the specified types.
void	replicate(Object... oids) Method to perform the replication of the objects defined by the supplied identities.
void	replicate(String... classNames) Method to perform the replication for all objects of the specified class names.
protected void	replicateInTarget(Object... detachedObjects) Method to replicate the provided detached objects in the target datastore.
void	setProperty(String key, String value) Method to set a property for replication.

Methods inherited from class java.lang.Object

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

Field Detail

LOCALISER

protected static final org.datanucleus.util.Localiser LOCALISER

Localisation utility for output messages.

properties

protected Properties properties

Properties defining the replication process.

Constructor Detail

JPAReplicationManager

public JPAReplicationManager(javax.persistence.EntityManagerFactory emf1,
                     javax.persistence.EntityManagerFactory emf2)

Constructor for replicating between source and target EMF.

Parameters:

emf1 - EMF source

emf2 - EMF target

Method Detail

setProperty

public void setProperty(String key,
               String value)

Method to set a property for replication.

Parameters:

key - Property key

value - Property value

getProperties

public Properties getProperties()

Accessor for the replication properties. Supported properties include

• datanucleus.replicateObjectGraph - whether we replicate the object graph from an object. if this is set we attempt to replicate the graph from this object. Otherwise just the object and its near neighbours.

Returns:

Replication properties

getBooleanProperty

protected boolean getBooleanProperty(String key)

replicate

public void replicate(Class... types)

Method to perform the replication for all objects of the specified types.

Parameters:

types - Classes to replicate

replicate

public void replicate(String... classNames)

Method to perform the replication for all objects of the specified class names.

Parameters:

classNames - Classes to replicate

replicate

public void replicate(Object... oids)

Method to perform the replication of the objects defined by the supplied identities.

Parameters:

oids - Identities of the objects to replicate

replicateInTarget

protected void replicateInTarget(Object... detachedObjects)

Method to replicate the provided detached objects in the target datastore.

Parameters:

detachedObjects - The detached objects (from the source datastore)