this.env = env;
this.fs = fs;
}
public void prepareStats(HMapIF idfs, HMapIF cfs) throws Exception {
stats = new GlobalStats(idfs, cfs,
(int) env.getDocumentCount(), env.getCollectionSize(),
(float) env.getCollectionSize() / (float) env.getDocumentCount(),
(float) env.getDefaultDf(), (float) env.getDefaultCf());
}