如何遍历对象数组列表 [英] How to Iterate through List of Object arrays

问题描述

  Criteria crit = session 
所以现在我有一个包含一段代码的程序。 .createCriteria（Product.class）; 
 ProjectionList projList = Projections.projectionList（）; 
 projList.add（Projections.max（price））; 
 projList.add（Projections.min（price））; 
 projList.add（Projections.countDistinct（description））; 
 crit.setProjection（projList）; 
列表结果= crit.list（）; 
  

我想迭代results.So先谢谢您提供的任何帮助/建议。在这种情况下，您将拥有一个列表，其元素是以下数组：
[maxPrice，minPrice，minPrice，计数]。

  .... 
列表< Object []> results = crit.list（）; 
 
 for（Object [] result：results）{
 Integer maxPrice =（Integer）result [0]; 
整数minPrice =（整数）结果[1]; 
长计数=（长）结果[2]; 
} 
  

So right now I have a program containing a piece of code that looks like this...

Criteria crit = session.createCriteria(Product.class);
ProjectionList projList = Projections.projectionList();
projList.add(Projections.max("price"));
projList.add(Projections.min("price"));
projList.add(Projections.countDistinct("description"));
crit.setProjection(projList);
List results = crit.list();

I want to iterate results.So thank you in advance for any help/advice that is offered.

解决方案

In this case you will have a list whose elements is an array of the following: [maxPrice,minPrice,count].

....
List<Object[]> results = crit.list();

for (Object[] result : results) {
    Integer maxPrice = (Integer)result[0];
    Integer minPrice = (Integer)result[1];
    Long count = (Long)result[2];
}

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