Hi Kang, Thanks for your questions. They are answered below:
++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Chris Mattmann, Ph.D. Adjunct Associate Professor, Computer Science Department University of Southern California Los Angeles, CA 90089 USA Email: [email protected] WWW: http://sunset.usc.edu/~mattmann/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -----Original Message----- From: Kang Wang <[email protected]> Date: Wednesday, October 29, 2014 at 12:16 AM To: Chris Mattmann <[email protected]> Subject: Questions about OODT >Hi, pf Chris > > >I have two questions about using OODT. > > >1. What is product in OODT? > Is a single json file is a product or whole dataset is a product? > I don't know for --productStructure we should use Flat file or >directory. For the purposes of this assignment, consider a ³product² to be a JSON file, a single instance of it. Just use the Flat structure. > > >2. Should we create .met metadata file? > I means in job posting josn file, it has already contained job >posting metadata, > why we need to establish metadata file again? > Does metadata file is for mapping metadata of job posting json to >elements defined in product-type? > If we need to create .met file, how to customize metadata file? I >just see the following > snippet about .met file. >blah.txt.met ><cas:metadata > xmlns:cas="http://oodt.jpl.nasa.gov/1.0/cas"; ><http://oodt.jpl.nasa.gov/1.0/cas>> ></cas:metadata> > Yep you need this .met file since OODT uses that to index it in the File Manager. Cheers, Chris > > > > > >Best Regards, >Kang > > >
