title: solr search multiple category and tags
body: <p>I'd like to use solr for the following scenario:</p>
  
  <p>Each photo may have multiple sets.
  Each set will have 1 "category" and 1 "tag set":</p>
  
  <p>E.g. Photo A Set 1: "category" = one-piece (single item); 
         "tag set" = slim fit, vintage, red color (multiple items)</p>
  
  <p>E.g. Photo A Set 2: "category" = sandals (single item);
         "tag set" = platform, red color (multiple items)</p>
  
  <p>We want to be able to search the Photo based on the above category/tags: 
  e.g. "platform sandals", "red one-piece", etc</p>
  
  <p>Can anyone point us how we should set up the necessary schema.xml file?
  (We don't need to show faceted category in our case)</p>
  
  <p>(solr version 1.4.1)</p>
  
  <p>Thanks in advance</p>