destineutil.java

主要是航空预订系统

/**
 * 
 */
package com.air.backend.util;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.air.exceptions.AirException;
import com.air.model.Fight;
import com.air.model.LoginUser;
import com.air.persistence.DataSrcUtil;
import com.air.persistence.IsqlDataSource;
import com.air.util.ValHelper;

/**
 * @author jelly_yang
 *
 */
public class DestineUtil {
	private static Log log = LogFactory.getLog(DestineUtil.class);

	private DestineUtil(){
		
	}
	
	private static class DestineUtilHolder{
		static final DestineUtil destineUtil = new DestineUtil();
	}
	
	public static DestineUtil getInstance(){
		return DestineUtilHolder.destineUtil;
	}
	
	public Fight getFightById(String fid)throws AirException{
		Fight fight = new Fight();
		Map<String, String> result = new HashMap<String, String>();
		String sSql = "select * from fights where fid="+fid;
		   
		IsqlDataSource src = DataSrcUtil.getInstance().getDataSource();
		Connection conn = null;
		try
		{
			conn = src.getConnection();
			result = src.retrieveSingleRow(conn, sSql);
		}
		catch(SQLException se)
		{
			se.printStackTrace();
			log.error("getFightById() caught SQLException: " + se);
		}
		catch(Exception ex)
		{
			ex.printStackTrace();
			log.error("getFightById() caught Exception: " + ex);
		}
		finally
		{
			src.closeConn(conn);
		}
		if(!result.isEmpty())
		{
			Integer fightId = ValHelper.getInstance().getIntValue(result, "fid");
			String fightName = ValHelper.getInstance().getValue(result, "fight_name");
			String fightNo = ValHelper.getInstance().getValue(result, "fight_no");
			String leaveCity = ValHelper.getInstance().getValue(result, "leave_city");
			String arriveCity = ValHelper.getInstance().getValue(result, "arrive_city");
			String leaveTime = ValHelper.getInstance().getValue(result, "leave_time");
			String arriveTime = ValHelper.getInstance().getValue(result, "arrive_time");
			double price = ValHelper.getInstance().getDoubleValue(result, "price");
			double fuelRate = ValHelper.getInstance().getDoubleValue(result, "fuel_rate");
			double buildRate = ValHelper.getInstance().getDoubleValue(result, "build_rate");
			String leaveDate = ValHelper.getInstance().getValue(result, "leave_date");
			Integer specialNum = ValHelper.getInstance().getIntValue(result, "special_num");
			Integer economicNum = ValHelper.getInstance().getIntValue(result, "economic_num");
			Integer businessNum = ValHelper.getInstance().getIntValue(result, "business_num");
			Integer headNum = ValHelper.getInstance().getIntValue(result, "head_num");
			
			fight.setFightId(fightId);
			fight.setLeaveDate(leaveDate.substring(0,10));
			fight.setFightName(fightName);
			fight.setFightNo(fightNo);
			fight.setLeaveCity(leaveCity);
			fight.setArriveCity(arriveCity);
			fight.setLeaveTime(leaveTime);
			fight.setArriveTime(arriveTime);
			fight.setPrice(price);
			fight.setFuelRate(fuelRate);
			fight.setBuildRate(buildRate);
			fight.setSpecialNum(specialNum);
			fight.setEconomicNum(economicNum);
			fight.setBusinessNum(businessNum);
			fight.setHeadNum(headNum);
		}
		return fight;
	}

}