org.opensubsystems.patterns.listdata.util
Class AsyncDataLoaderRunnable

java.lang.Object
  org.opensubsystems.patterns.listdata.util.AsyncDataLoaderRunnable

All Implemented Interfaces:

java.lang.Runnable

public abstract class AsyncDataLoaderRunnable
extends java.lang.Object
implements java.lang.Runnable

New Runnable object which allows to process multiple items at the same time. The processor of the data has to specify it's version (status). If the version changes before or while the processing of the data is in progress the processing will stop.

Version:

$Id: AsyncDataLoaderRunnable.java,v 1.3 2007/01/07 06:14:15 bastafidli Exp $

Author:

Miro Halas

Code reviewer:

Miro Halas

Code reviewed:

Initial revision

Field Summary

protected int	m_iOriginalObjectVersion Value uniquely identifying the original state of the object by which the data should be processed.
protected java.util.List	m_lstData List of data which should be added to the table

Constructor Summary

AsyncDataLoaderRunnable(java.util.List lstData, int iOriginalObjectVersion)
Constructor

Method Summary

protected abstract int	getCurrentObjectVersion() This method has to be overriden to return the actual value of the version for object, which is processing the data.
protected abstract void	processItem(org.opensubsystems.core.data.DataObject dataToProcess) Process new item from the list.
void	run()

Methods inherited from class java.lang.Object

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

Field Detail

m_iOriginalObjectVersion

protected int m_iOriginalObjectVersion

Value uniquely identifying the original state of the object by which the data should be processed. This can identify if the object changes and data cannot/shouldn't be added anymore.

m_lstData

protected java.util.List m_lstData

List of data which should be added to the table

Constructor Detail

AsyncDataLoaderRunnable

public AsyncDataLoaderRunnable(java.util.List lstData,
                               int iOriginalObjectVersion)

Constructor

Parameters:

lstData - - list with already loaded data

iOriginalObjectVersion - - version of the object by which the data should be processed. If the version of the object at the time when the data are being processed is different from this version, then the data will not be processed or the processing of the data stops.

Method Detail

run

public final void run()

Specified by:

run in interface java.lang.Runnable

processItem

protected abstract void processItem(org.opensubsystems.core.data.DataObject dataToProcess)

Process new item from the list. This method cannot be abstract so that we can do the in place overriding of the class.

Parameters:

dataToProcess - - data item to process

getCurrentObjectVersion

protected abstract int getCurrentObjectVersion()

This method has to be overriden to return the actual value of the version for object, which is processing the data. If the current version of the object will not match the version for which this runnable was constructed then the processing will stop.

Returns:

int