au.com.cybersearch2.classyjpa.entity

Class TaskBase

java.lang.Object

au.com.cybersearch2.classytask.BackgroundTask

au.com.cybersearch2.classyjpa.entity.TaskBase

All Implemented Interfaces:

Callable<Boolean>

public class TaskBase
extends BackgroundTask

TaskBase Implements most of the details to execute a peristence WorkerTask. To complete, override base class method executeInBackground().

Author:

Andrew Bowley 19/08/2014

Constructor Summary

Constructors

Constructor and Description
TaskBase(JavaPersistenceContext persistenceContext, ThreadHelper threadHelper) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
boolean	doInBackground() doInBackground
Executable	getExecutable()
TransactionInfo	getTransactionInfo() Returns transaction information
void	onCancelled(Boolean success) Process signalled result after task has been cancelled.
void	onPostExecute(Boolean success) Process signalled result after task has run

Methods inherited from class au.com.cybersearch2.classytask.BackgroundTask

call, getExecutionException, onPreExecute, setExecutionException

Methods inherited from class java.lang.Object

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

Constructor Detail

TaskBase

public TaskBase(JavaPersistenceContext persistenceContext,
        ThreadHelper threadHelper)

Constructor

Parameters:

persistenceContext - Object which creates a persistence context and executes a task in that context

Method Detail

onPostExecute

public void onPostExecute(Boolean success)

Process signalled result after task has run

Overrides:

onPostExecute in class BackgroundTask

Parameters:

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

See Also:

BackgroundTask.onPreExecute(), BackgroundTask.doInBackground()

onCancelled

public void onCancelled(Boolean success)

Process signalled result after task has been cancelled. NOTE: Interruption of the running thread is not permitted, so same as non-cancel case.

Overrides:

onCancelled in class BackgroundTask

Parameters:

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

See Also:

TaskRunner.cancel(boolean), TaskRunner.isCancelled()

getTransactionInfo

public TransactionInfo getTransactionInfo()

Returns transaction information

Returns:

TransactionInfo

doInBackground

public boolean doInBackground()

doInBackground

Specified by:

doInBackground in class BackgroundTask

Returns:

Boolean object to flag success (true), failure (false) or cancel (null)

See Also:

BackgroundTask.doInBackground()

getExecutable

public Executable getExecutable()