Account for cancelling an update process

Posted by Aerus on Stack Overflow See other posts from Stack Overflow or by Aerus
Published on 2012-09-08T15:34:14Z Indexed on 2012/09/08 15:37 UTC
Read the original article Hit count: 178

Filed under:

application

|

updating

I'm trying to develop the logic of updating my (Java) application but I'm stuck on a particular problem.

The user can, at any time, be it on purpose (by clicking the Cancel button) or unwillingly (system/power failure) cancel the update process.

If the updater was busy downloading files or unpacking files and thus didn't make any changes to the main application yet, this can be easily recovered by re-downloading the files and continuing the update process like normally.

But, how can i account for changes made to the main application (i.e. a file was only partially replaced, some files were corrupted, etc.) that result in a main application that can't be launched anymore?
Is it possible to rollback the changes made during the update without having to keep a full backup of my application or without doing a full reinstall?

Are there any standards for updating an application that can help me with this?

© Stack Overflow or respective owner

Related posts about application

What is the equivalent of Application.ProcessMessages, Application.Handle and Application.Terminated

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am new to Writing Windows Service apps and having problems. Written in Delphi, I have written a normal windows application to check and debug the major parts of the code and now have to convert it to an NT Service. My code has to launch a windows application which I do using the following… >>> More
A .NET Framework 2.0-based Multi-AppDomain application stops responding when you run the application

as seen on Dot net Slackers - Search for 'Dot net Slackers'
979744 ... A .NET Framework 2.0-based Multi-AppDomain application stops responding when you run the applicationThis RSS feed provided by kbAlerz.com.Visit kbAlertz.com to subscribe. It's 100% free and you'll be able to recieve e-mail or RSS updates for the technologies you pick from the Microsoft… >>> More
A .NET Framework 2.0-based Multi-AppDomain application stops responding when you run the application

as seen on Dot net Slackers - Search for 'Dot net Slackers'
979744 ... A .NET Framework 2.0-based Multi-AppDomain application stops responding when you run the applicationThis RSS feed provided by kbAlerz.com.Visit kbAlertz.com to subscribe. It's 100% free and you'll be able to recieve e-mail or RSS updates for the technologies you pick from the Microsoft… >>> More
Error launching application after ClickOnce deployment - "An application for this deployment is alre

as seen on Stack Overflow - Search for 'Stack Overflow'
As part of my continuous integration build the application is deployed as a ClickOnce application. This works great the first time, but when I try the launch the app after an update has been deployed I get the following error. An application for this deployment is already installed with a different … >>> More
How to handle ASP.NET application error that occurs on application start and transfer & display erro

as seen on Stack Overflow - Search for 'Stack Overflow'
I know that ASP.NET MVC has error filter attribute to handle specified error type. However, this feature cannot catch any error that occurs when application start. Therefore, I need to add some code to “Application_Error” method for handling this error like the following code. public void Application_Error(object… >>> More

Related posts about updating

Updating PHP mySQL drivers when updating mySQL

as seen on Server Fault - Search for 'Server Fault'
I have apache, php, and mysql all installed from source. When I update mySQL to the latest version (5.1.46), do I need to update anything on the php side for it to be able to work with the new version? Many Thanks >>> More
WPF: Updating visibility of controls not updating the screen

as seen on Stack Overflow - Search for 'Stack Overflow'
I will preface this by stating that I am new to WPF programming and may be making multiple errors. Any insight that can be provided to help me improve in my skills are greatly appreciated. I am working with a WPF application and am looping through a list of objects that contain properties that describe… >>> More
MySQL: Updating entry WITHOUT updating timestamp

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a timestamp in a mysql table with attribute "ON UPDATE CURRENT_TIMESTAMP". Is there a way to manually disable updating the timestamp on a special occasion? (eg: updating the entry to revise a blog post, but not to re-date it) >>> More
Accessing and Updating Data in ASP.NET: Filtering Data Using a CheckBoxList

as seen on Internet.com - Search for 'Internet.com'
This article series, by Scott Mitchell, examines how to work with data using ASP.NET's data source controls. This particular article looks at how to filter data based on a user's selections from a CheckBoxList. >>> More
Why i disconnect every few seconds? using USB wireless adapter

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
i know it's for ubuntu questions..but mint and ubuntu are very similiar and i had the same problem with linux ubuntu too..so i think this is the right place for my question anyway i don't have experience with drivers and other things,after installing Linux on my machine( i did dist-upgrade btw) everything… >>> More