[工具类] Hive SQL

package com.claw.util.hive;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class Hql {
    
    public static String exec(String sql) throws Exception{
        System.out.println("start sql .....");
        String result = "0";
        List<String> command = new ArrayList<String>();
        command.add("hive");
        command.add("-e");
        command.add(sql);
        System.out.println(sql);
        
        ProcessBuilder hiveProcessBuilder = new ProcessBuilder(command);
        Process hiveProcess = hiveProcessBuilder.start();
        BufferedReader br = new BufferedReader(new InputStreamReader(hiveProcess.getInputStream()));
        System.out.println("hsql run ......");
        String data = null;
        if((data = br.readLine()) != null){
            result = data;
        }
        return result;
    }

    public static List<String> sqlList(String sql) throws Exception{
        System.out.println("start sql list .....");
        List<String> list = new ArrayList<String>();
        
        List<String> command = new ArrayList<String>();
        command.add("hive");
        command.add("-e");
        command.add(sql);
        System.out.println(sql);
        
        ProcessBuilder hiveProcessBuilder = new ProcessBuilder(command);
        Process hiveProcess = hiveProcessBuilder.start();
        BufferedReader br = new BufferedReader(new InputStreamReader(hiveProcess.getInputStream()));
        System.out.println("hsql run ......");
        String data = null;
        while((data = br.readLine()) != null){
            list.add(data);
        }
        return list;
    }
    
    public static void t() throws Exception{
        
        String sql="select count(distinct(cookie)) from logs where eventdate=20150724";
        List<String> command = new ArrayList<String>();
        command.add("hive");
        command.add("-e");
        command.add(sql);
        
        ProcessBuilder hiveProcessBuilder = new ProcessBuilder(command);
        Process hiveProcess = hiveProcessBuilder.start();
        
        BufferedReader br = new BufferedReader(new InputStreamReader(hiveProcess.getInputStream()));
        String data = null;
        System.out.println("--------------------");
        if ((data = br.readLine()) != null) {
            System.out.println(data);
        }
        
    }
    
    
    public static void main(String[] args) {
        try {
            t();
        } catch (Exception e) {
            // TODO: handle exception
        }
    }
    


}