au.com.cybersearch2.classynode

Class NodeFinder

java.lang.Object

au.com.cybersearch2.classynode.NodeFinder

All Implemented Interfaces:

PersistenceTask, PersistenceWork

public class NodeFinder
extends Object
implements PersistenceWork

- * NodeFinder Abstract persistence work overrides doInBackground() to perform find node by primary key. Sub class to override onPostExecute() and onRollback()

Author:

Andrew Bowley 05/09/2014

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	NodeFinder.Callback

Constructor Summary

Constructors

Constructor and Description
NodeFinder(int nodeId, NodeFinder.Callback callback) Create NodeFinder object

Method Summary

Methods

Modifier and Type	Method and Description
void	doTask(EntityManagerLite entityManager) Find node by primary key on background thread
void	onPostExecute(boolean success) Runs on separate thread after successful completion of PersistenceTask.doTask(EntityManagerLite entityManager).
void	onRollback(Throwable rollbackException) Handle rollback caused by exception while executing PersistenceTask.doTask(EntityManagerLite entityManager)

Methods inherited from class java.lang.Object

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

Constructor Detail

NodeFinder

public NodeFinder(int nodeId,
          NodeFinder.Callback callback)

Create NodeFinder object

Parameters:

nodeId - Primary key to search on

Method Detail

doTask

public void doTask(EntityManagerLite entityManager)

Find node by primary key on background thread

Specified by:

doTask in interface PersistenceTask

Parameters:

entityManager - Entity manager provided to perform persistence operation(s). Do not call close().

See Also:

PersistenceTask.doTask(au.com.cybersearch2.classyjpa.EntityManagerLite)

onPostExecute

public void onPostExecute(boolean success)

Description copied from interface: PersistenceWork

Runs on separate thread after successful completion of PersistenceTask.doTask(EntityManagerLite entityManager).

Specified by:

onPostExecute in interface PersistenceWork

Parameters:

success - True if PersistenceWork completed successfully, otherwise false

onRollback

public void onRollback(Throwable rollbackException)

Description copied from interface: PersistenceWork

Handle rollback caused by exception while executing PersistenceTask.doTask(EntityManagerLite entityManager)

Specified by:

onRollback in interface PersistenceWork

Parameters:

rollbackException - Throwable exception which caused rollback