code: public Map getModelEntryMap(Map requestParamMap,String tableName,String modelName,String dbName) throws Exception{
  		return getModelEntryMap( requestParamMap, tableName, modelName, dbName,"");
  	}
docs: ��ȡ���ģ��
  @param requestParamMap �ύ�������
  @param tableName �����
  @param modelName ģ�����
  @return
  @throws Exception