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Home » Eclipse Projects » Plugin Development Environment (PDE) » "No property tester" CoreException
"No property tester" CoreException [message #757345] Thu, 17 November 2011 20:34 Go to next message
Mark Walters is currently offline Mark WaltersFriend
Messages: 25
Registered: June 2011
Junior Member
Hi,
In our main project explorer view (a custom CNF view), if I right click and choose 'properties' for one of our folders (they're virtual but do adapt to resources) I get the properties dialog and it seems fine but I get a trace:

No property tester contributes a property org.eclipse.core.resources.contentTypeId to type class org.eclipse.core.internal.resources.Folder

I see scant references to this on the web - any ideas what's causing it?

Is it our 'propertyTesters' extension point? The class implementing that?

Any ideas would be great.

Thanks,
Mark.
Re: "No property tester" CoreException [message #757490 is a reply to message #757345] Fri, 18 November 2011 16:03 Go to previous messageGo to next message
Curtis Windatt is currently offline Curtis WindattFriend
Messages: 166
Registered: July 2009
Senior Member
Property testers are contributed via the org.eclipse.core.expressions.propertyTesters extension point. They specify one or more properties they can an object for. In your case something is testing a folder for the contentTypeId, but the property tester is missing. I don't know whether that is a property tester provided by you or the platform.
Re: "No property tester" CoreException [message #757755 is a reply to message #757490] Mon, 21 November 2011 13:57 Go to previous message
Mark Walters is currently offline Mark WaltersFriend
Messages: 25
Registered: June 2011
Junior Member
Hi Curtis,

thanks for this. I've added a property tester for the folder type, like this:

<propertyTester
id="xx.xx.xx.folderTester"
type="org.eclipse.core.internal.resources.Folder"
namespace="org.eclipse.core.resources"
properties="contentTypeId"
class="xxx.xxx.xxx.typeTester">
</propertyTester>

where the 'typeTester' class just throws away the contentTypeID property.

This stops the exception but perhaps doesn't explain the original problem.

Still, the defect was moaning about the exception, not any missing function, so job done AFAIK.

Ta,
Mark.
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