code: @Override
  	public CloseableIterator<ZooPC> readObjectFromIndex(
  			ZooFieldDef field, long minValue, long maxValue, boolean loadFromCache) {
  		SchemaIndexEntry se = schemaIndex.getSchema(field.getDeclaringType());
  		LongLongIndex fieldInd = se.getIndex(field);
  		LLEntryIterator iter = fieldInd.iterator(minValue, maxValue);
  		return new ObjectIterator(iter, cache, this, objectReader, loadFromCache);
  	}
docs: WARNING: float/double values need to be converted with BitTools before used on indices.