修改信息

	public int modifyMiss(RESINFO bean, List<MISSINGISTEMS> missings, List<MISSINGISTEMS> missList) throws Exception {
		int result = StatusType.DEFAULT ;  

    	RESINFO resinfo = new RESINFO();
    	resinfo.setID(bean.getID());
    	resinfo = this.bean(resinfo);

    	List<MISSINGISTEMS> missingModify = new ArrayList<MISSINGISTEMS>();//存储添加和删除的缺件信息
    	List<MISSINGISTEMS> missingDel = new ArrayList<MISSINGISTEMS>();//存储删除的缺件信息列表
    	List<MISSINGISTEMS> missingAdd = new ArrayList<MISSINGISTEMS>();//存储添加进来的缺件信息列表

    	if (NoneType.isNullOrEmpty(missings) && NoneType.isNullOrEmpty(missList)) {//说明修改前后都没有缺件
    		result = this.daoProvider().modify(bean);

		}else if (NoneType.isNullOrEmpty(missings) && !NoneType.isNullOrEmpty(missList) ) {//修改前没有缺件，修改后存在缺件

			for(MISSINGISTEMS missingistems : missList ){
    			missingistems.setID(KeyGenerator.instance().getKey());
    			missingistems.setRESID(resinfo.getID());
    		}

    		this.daoProvider(false).batchInsert(missList);
    		result = this.daoProvider().modify(bean);

		}else if (!NoneType.isNullOrEmpty(missings) && NoneType.isNullOrEmpty(missList)) {//修改后删除全部的缺件
			this.daoProvider(false).batchDelete(missings);
			result = this.daoProvider().modify(bean);

		}else {
			missingModify = getDiffrent(missings, missList);//找到新增和删除掉的缺件

			for(MISSINGISTEMS miss : missingModify){

				if (NoneType.isNullOrEmpty(miss.getID())) {//找到新增的缺件信息
					missingAdd.add(miss);

				}else{
					missingDel.add(miss);
				}
			}

			for(MISSINGISTEMS missing : missingAdd ){
				missing.setID(KeyGenerator.instance().getKey());
				missing.setRESID(resinfo.getID());
    		}

			if(!NoneType.isNullOrEmpty(missingAdd)){
				this.daoProvider(false).batchInsert(missingAdd);
			}

			if(!NoneType.isNullOrEmpty(missingDel)){
				this.daoProvider(false).batchDelete(missingDel);
			}

			result = this.daoProvider().modify(bean);
		}

        return result ;
	}

	/**
     * 获取两个List的不同元素
     * @param missings 表示修改前的缺件信息列表
     * @param missList 表示修改后的缺件信息列表
     * @return
     */
    private static List<MISSINGISTEMS> getDiffrent(List<MISSINGISTEMS> missings, List<MISSINGISTEMS> missList) {
    	List<MISSINGISTEMS> missingistems = new ArrayList<MISSINGISTEMS>();

    	for(MISSINGISTEMS miss : missList){

    		if (NoneType.isNullOrEmpty(miss.getID())) {//找到新增的缺件信息
				missingistems.add(miss);
			}
    	}

    	for(MISSINGISTEMS missing : missings){

    		if(!missList.contains(missing)){//找到删除掉的缺件信息
    			missingistems.add(missing);
    		}
    	}

        return missingistems;
    }
}

原文地址：https://www.cnblogs.com/singworld/p/9927249.html