Cocoa application developing to make use of the system command locate as a search mechanism

I would like a search application, calling the system command "locate", developing in cocoa.
The application must use "locate" as this will be configured to create an index of nfs mounted file systems.
The app must display file names, creation & last update date. There must be a button that allows you to sort all columns ascending and descending.
If at all possible the spotligh should be able to be configured to be able to use this apps search functionality.