Map<String, Integer> removeFields = new HashMap<String, Integer>();
removeFields.put("test", PruningPolicy.DEL_POSTINGS | PruningPolicy.DEL_STORED);
//IndexReader in = IndexReader.open(sourceDir, true);
IndexReader in = IndexReader.open(sourceDir);
TFTermPruningPolicy tfp = new TFTermPruningPolicy(in, removeFields, null, 2);
StorePruningPolicy stp = new StorePruningPolicy(in, removeFields);
PruningReader tfr = new PruningReader(in, stp, tfp);
Document doc = tfr.document(4);
// removed stored values?
assertNull(doc.get("test"));
// removed postings ?