小编tkt*_*986的帖子

我真的想了解我的代码发生了什么.

我有一个独立的应用程序,它使用spring和Hibernate作为JPA,我试图使用一个主类运行测试

我的主要课程

package edu.acct.tsegay.common;

import edu.acct.tsegay.model.User;
import edu.acct.tsegay.business.IUserBusinessObject;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class App {
    public static void main(String[] args) {
        try {
            ApplicationContext context = new ClassPathXmlApplicationContext(
                    "Spring3AndHibernate-servlet.xml");
            IUserBusinessObject userBusinessObject = (IUserBusinessObject) context
                    .getBean("userBusiness");

            User user = (User) context.getBean("user1");
            user.setPassword("pass");
            user.setUsername("tsegay");
            System.out.println(user.getPassword());

            userBusinessObject.delete(user);

            User user2 = new User();
            user2.setUsername("habest");
            user2.setPassword("pass1");
            System.out.println(user2.getPassword());
            /*
             * userBusinessObject.save(user2);
             * 
             * User user3 = userBusinessObject.searchUserbyId("tsegay");
             * System.out.println("Search Result: " + user3.getUsername());
             */
            System.out.println("Success");
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

} …

我试图使用hadoop找到任何给定点的总和,我遇到的问题是从单个reducer中获取给定键的所有值.看起来像这样.

减速器:

 public static class Reduce extends MapReduceBase implements
        Reducer<Text, IntWritable, Text, DoubleWritable> {

    public void reduce(Text key, Iterator<IntWritable> values,
            OutputCollector<Text, DoubleWritable> output, Reporter reporter)
            throws IOException {
        Text word = new Text();

        Iterator<IntWritable> tr = values;
        IntWritable v;
        while (tr.hasNext()) {
             v = tr.next();

            Iterator<IntWritable> td = values;
            while (td.hasNext()) {

                IntWritable u = td.next();
                double sum = u+v;
                word.set( u + " + " + v);
                output.collect(word, new DoubleWritable(sum));
            }
        }
    }
}

我试图创建Iterator变量的两个副本,以便我可以通过第二个迭代器的所有值,而我从前一个迭代器获取单个值(两个while循环),但两个迭代器保持相同的值所有时间.

我不确定这是否是正确的方法,任何帮助都非常感谢.

谢谢,

Tsegay

我有一个像这样的嵌套div

<div id="one">
    <div id="two">
        id two goes here
    </div>
    <div id="three">
           id three goes here
    </div>
    <div id="four">
          id four goes here
    </div>
</div>

现在我想处理除div#four之外的所有div上的click和doubleclick事件,就像这样

$('#one').live('dblclick', function() {
                    my javascript code goes here
                });
('#one').live('click', function() {
                    my javascript code goes here
                });

我如何使用上面的脚本并排除最后一个嵌套的div #four.

谢谢