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When to add resource markers? [message #489623]

Mon, 05 October 2009 11:48

Christoph HÃ¶ger

Messages: 40
Registered: July 2009

Member

Hi there,

I have a project model that I want to check for errors as soon as there
are changes. But adding the marker to the IProject leads to a problem:

1. inside the ResourceChangeEvent the workspace is locked and therefore
the markers cannot be created

2. Outside the event handling I can add markers but this causes a new
ResourceChangeEvent (which in turn forces the project check and so on)

So how (and when!) am I supposed to add a marker to a project? Do I need
to make the resource change event handling more fine grained (to not
react on marker creation)?

regards

Christoph

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Re: When to add resource markers? [message #489821 is a reply to message #489623]

Tue, 06 October 2009 07:16

Hitesh

Messages: 19
Registered: July 2009

Junior Member

You should do this during a build (in a builder) or you can try during IResourceChangeEvent.PRE_BUILD, or you may be able to work around it by using IWorkspace. AVOID_UPDATE.

Hitesh

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Re: When to add resource markers? [message #489823 is a reply to message #489821]

Tue, 06 October 2009 07:20

Hitesh

Messages: 19
Registered: July 2009

Junior Member

And yes modifications to markers should be batched using WorkpaceJob or IWorkspaceRunnable.

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Re: When to add resource markers? [message #489851 is a reply to message #489823]

Tue, 06 October 2009 09:06

Christoph HÃ¶ger

Messages: 40
Registered: July 2009

Member

Am 06.10.2009 09:20, schrieb Hitesh:
> And yes modifications to markers should be batched using WorkpaceJob or
> IWorkspaceRunnable.

Huh. That is bad. So how would I add markers for things like parse
errors that occured during reconciling? AVOID_UPDATE only batches the
resource change events into one single big one. And I cannot add all
markers after resource changes had happened.
How does jdt handle this?

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Re: When to add resource markers? [message #489875 is a reply to message #489851]

Tue, 06 October 2009 11:30

Hitesh

Messages: 19
Registered: July 2009

Junior Member

The batching part was just a tip Smile

Did you try creating them during a PRE_BUILD or POST_BUILD event in the listener.

If you are creating markers outside the listener (probably via a job) , normally you would not react to marker change that the job just brought about, otherwise this would imply that you are creating markers based on markers (cycle?) rather than some outside info Smile

.

>Do I need
>to make the resource change event handling more fine >grained (to not
>react on marker creation)?
Sounds reasonable.

Or maybe create the markers in your own builder so that you are excluded from participation in the change .

You can ged more info abt mechs here: http://www.eclipse.org/articles/Article-Resource-deltas/reso urce-deltas.html

http://www.eclipse.org/articles/Article-Builders/builders.ht ml

Hope this helps.

Hitesh

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