java8 排序 orderBy

OrderByUtils:(待优化)

package com.icil.report.utils;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Comparator;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
 * *************************************************************************
 * 
 * @param 
 *  @ClassName:    : ListUtil 
 *
 *  @Description:    : 
 *
 *  @Creation Date   : 13 May 2019 2:48:52 PM
 *
 *  @Author          :  Sea
 *  
 *
 * 
 **************************************************************************
 */
@SuppressWarnings("all")
public class OrderByUtils{
    
    private static Logger  LOGGER=LoggerFactory.getLogger(OrderByUtils.class);

  
    //#######################################################################################################
    //                   order by   java 7 && java8
    // ######################################################################################################
    
   
       /**
        * @Desc: java8 parallelStream
        * @param colls :需要排序的集合（pojo）
        * @param firstfiledName  :先按排序的字段
        * @param secondfiledName  ：:再按排序的字段
        * @return
        */
//    public static  List  orderby(Collection colls,String firstfiledName,String secondfiledName){
//     return colls.parallelStream().sorted(Comparator.comparing(d->getFieldStringValueByName(d,firstfiledName)).thenComparing(d->getFieldStringValueByName(d,secondfiledName))).collect(Collectors.toList());
//   }
    

    /**
     *  @Desc: java8 parallelStream
     * @param colls
     * @param filedName 排序的字段
     * @param fieldType  排序的字段的类型
     * @return
     */
    public static  List  orderbyPro(Collection colls,String filedName,Class fieldType){
        
        switch (fieldType.getName()) {
          case "java.lang.Integer":
              return colls.parallelStream().sorted(Comparator.comparing(d->(Integer)getFieldValueByName(d,filedName))).collect(Collectors.toList());
          case "java.lang.Long":
              return colls.parallelStream().sorted(Comparator.comparing(d->(Long)getFieldValueByName(d,filedName))).collect(Collectors.toList());
          case "java.lang.Double":
              return colls.parallelStream().sorted(Comparator.comparing(d->(Double)getFieldValueByName(d,filedName))).collect(Collectors.toList());
          case "java.util.Date":
              return colls.parallelStream().sorted(Comparator.comparing(d->(Date)getFieldValueByName(d,filedName))).collect(Collectors.toList());
          case "java.lang.Float":
              return colls.parallelStream().sorted(Comparator.comparing(d->(Float)getFieldValueByName(d,filedName))).collect(Collectors.toList());
          case "java.lang.String":
              return colls.parallelStream().sorted(Comparator.comparing(d->(String)getFieldStringValueByName(d,filedName))).collect(Collectors.toList());  
          default:
              return null;
        }
   }
    
    
  
    
    
    
    

    /**
     * 
     * @param colls
     * @param filedName  :pojo 的属性名  如 user -->name
     * @return
     */
    public static  List  orderby(List colls, String filedName,Class fieldType){
        getMyComparator(colls,filedName,fieldType);
         colls.sort(getMyComparator(colls,filedName,fieldType));
         return colls;
    }
   
    
    /**
     * 通过属性名称对集合分组
     * @Desc:java 8 stream api, list 会过滤掉group by filed 的非空字段
     * @param colls   集合必须为对象 eg: List
     * @param fieldName为集合中对象的属性名称  eg: Employee-->name
     * @return
     * extends Comparable 
     */
    public static final  Map