au.com.cybersearch2.classyjpa.entity

Class JavaPersistenceContext

java.lang.Object

au.com.cybersearch2.classyjpa.entity.JavaPersistenceContext

public class JavaPersistenceContext
extends Object

JavaPersistenceContext Creates a persistence context and executes a task in that context. Allows for execution in process (synchronous) as well as in background thread (asynchronous).

Author:

Andrew Bowley 25 Mar 2015

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	JavaPersistenceContext.EntityManagerProvider

Constructor Summary

Constructors

Constructor and Description
JavaPersistenceContext(PersistenceWork persistenceWork, JavaPersistenceContext.EntityManagerProvider entityManagerProvider) Construct JavaPersistenceContext object

Method Summary

Methods

Modifier and Type	Method and Description
Boolean	doTask() Execute persistence work.
Executable	executeInProcess() Execute task in process
TransactionInfo	getTransactionInfo() Returns transaction information
WorkStatus	getWorkStatus() Returns execution status
void	onPostExecute(Boolean success) Process signalled result after task has run
void	setExecutionException(ExecutionException executionException)

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaPersistenceContext

public JavaPersistenceContext(PersistenceWork persistenceWork,
                      JavaPersistenceContext.EntityManagerProvider entityManagerProvider)

Construct JavaPersistenceContext object

Parameters:

persistenceWork - Work to be performed in Java PersistenceUnitAdmin context

entityManagerProvider - EntityManager factory

Method Detail

getTransactionInfo

public TransactionInfo getTransactionInfo()

Returns transaction information

Returns:

TransactionInfo object

getWorkStatus

public WorkStatus getWorkStatus()

Returns execution status

Returns:

WorkStatus object

executeInProcess

public Executable executeInProcess()

Execute task in process

Returns:

Executable to track progress

doTask

public Boolean doTask()

Execute persistence work.

Returns:

Boolean result - TRUE = success, FALSE = failure/rollback or null if exception thrown on transaction begin() called.

onPostExecute

public void onPostExecute(Boolean success)

Process signalled result after task has run

Parameters:

success - Boolean TRUE or FALSE or null if task cancelled before result available

setExecutionException

public void setExecutionException(ExecutionException executionException)