code: public int getStatistics(String datasourceId, String mappingId) {
  		final HashMap<String, Integer> mappingStat = getStatistics(datasourceId);
  		int triplesCount = mappingStat.get(mappingId).intValue();
  
  		return triplesCount;
  	}
docs: Returns one triple count from a particular mapping.
  
  @param datasourceId
  The data source identifier.
  @param mappingId
  The mapping identifier.
  @return The number of triples.