Eclipse Community Forums: Java Development Tools (JDT) » Calling "Refresh using native hooks or polling" programmatically

Home » Language IDEs » Java Development Tools (JDT) » Calling "Refresh using native hooks or polling" programmatically(Calling the job, if available, which eclipse calls when the check box for "Refresh using native hooks or polling" is selected)

Show: Today's Messages :: Show Polls :: Message Navigator

Calling "Refresh using native hooks or polling" programmatically [message #893215]

Tue, 03 July 2012 09:05

Nikhil chulli

Messages: 9
Registered: June 2012

Junior Member

I have to check file synchronization in some external folder, that is, I have to do some process if any files in that external folder has been changed even by a tool other than Eclipse.
I know that there is option in Window->General->Workspace "Refresh using native hooks or polling", which can be enough for the purpose.
But I want to call the same job(that eclipse calls when "Refresh using native hooks or polling" is selected) from my program. Is this possible? If it is possible, how can I call that job?

Report message to a moderator

Re: Calling "Refresh using native hooks or polling" programmatically [message #893286 is a reply to message #893215]

Tue, 03 July 2012 13:05

Stephan Herrmann

Messages: 1853
Registered: July 2009

Senior Member

If you just want to trigger a refresh you basically want to call org.eclipse.core.resources.IResource.refreshLocal(int, IProgressMonitor).
Also org.eclipse.ui.actions.RefreshAction might be of interest.

If you want to refresh the entire workspace, obtain a reference from ResourcesPlugin.getWorkspace().getRoot().

HTH,
Stephan

Report message to a moderator

Re: Calling "Refresh using native hooks or polling" programmatically [message #893419 is a reply to message #893286]

Wed, 04 July 2012 04:37

Nikhil chulli

Messages: 9
Registered: June 2012

Junior Member

Quote:

If you just want to trigger a refresh you basically want to call org.eclipse.core.resources.IResource.refreshLocal(int, IProgressMonitor).
Also org.eclipse.ui.actions.RefreshAction might be of interest.

If you want to refresh the entire workspace, obtain a reference from ResourcesPlugin.getWorkspace().getRoot().

Thanks a lot for your reply Stephan.

I am not interested in triggering a refresh as such. I would like to check, periodically, if any of the project's external files has been modified by an external tool(other than eclipse). And if it has been modified I will call my builder(which will do some xml processing).
Now, if we select the "Refresh using native hooks or polling" option under Window->General->Workspace, the eclipse automatically checks for any change periodically. And if it detects any change the builders are called.
So I assumed that selecting "Refresh using native hooks or polling" option will trigger a job inside eclipse. I was wondering if I could call that job from my program. If that is not possible, I believe, I would have to create my own job for polling and activating builders.

Report message to a moderator

Re: Calling "Refresh using native hooks or polling" programmatically [message #893617 is a reply to message #893419]

Wed, 04 July 2012 23:11

Stephan Herrmann

Messages: 1853
Registered: July 2009

Senior Member

Well, performing a refresh while an IResourceChangeListener is registered should actually give the desired notifications, no?

Other references of interest:
- When looking at the preference page (or view or ...) Alt-Shift-F1 points you to the implementing class, look from there
- http://www.eclipsezone.com/eclipse/forums/t71053.html
- org.eclipse.core.resources.refresh.IRefreshMonitor plus implementors
- org.eclipse.core.internal.refresh.RefreshJob

You may have noted that most classes involved are from org.eclipse.core.resources, which is not part of JDT - hint, hint - Smile