package com.mandi.common;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;

import com.mandi.dao.common.ObjectResult;

/** 
 * @author mengly 
 * @version 创建时间：2016年6月3日 下午1:18:57 
 * 类说明 :hibernate validator
 */

public class ValidatorUtils {
	private static Validator validator=null;
	public static Validator getValidator()
	{
		if(validator==null)
		{
			 ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
			 validator=factory.getValidator();
		}
		return validator;
	}
	public static <T> Set<ConstraintViolation<T>> checkCTS(T t)
	{
		Validator v=ValidatorUtils.getValidator();
		Set<ConstraintViolation<T>> cts=v.validate(t);
		return cts;
	}
	public static <T> ObjectResult<T> checkForMsgs(T t)
	{
		ObjectResult<T> objr=new ObjectResult<T>();
		if(t==null)
		{
			objr.setCode(1);
			objr.setHint("对象为空！");
			objr.setErrmsg("对象为空！");
			return objr;
		}
		Validator v=ValidatorUtils.getValidator();
		Set<ConstraintViolation<T>> cts=v.validate(t);
		if(cts.size()>0)
		{
			objr.setCode(1);
			Iterator<ConstraintViolation<T>> it=cts.iterator();
			StringBuffer sb=new StringBuffer();
			while(it.hasNext())
			{
				ConstraintViolation<T> ct=it.next();
				sb.append(ct.getMessage()+";");
			}
			objr.setHint(sb.toString());
			objr.setErrmsg(sb.toString());
		}else{
			objr.setCode(0);
		}
		return objr;
	}
	public <T> boolean check(T t)
	{
		
		Set<ConstraintViolation<T>> cts=checkCTS(t);
		if(cts.size()>0)
		{
			return false;
		}else{
			return true;
		}
	}
	
	public static <T> ObjectResult<T> checkPro(T t,String[] Pros)
	{
		ObjectResult<T> objr=new ObjectResult<T>();
		if(t==null)
		{
			objr.setCode(1);
			objr.setHint("对象为空！");
			objr.setErrmsg("对象为空！");
			return objr;
		}
		Validator v=ValidatorUtils.getValidator();
		StringBuffer sb=new StringBuffer();
		Set<ConstraintViolation<T>> cts=new HashSet<ConstraintViolation<T>>();
		for (String pro:Pros) {
			cts=v.validateProperty(t,pro);
			if(cts.size()>0)
			{
				Iterator<ConstraintViolation<T>> it=cts.iterator();
				while(it.hasNext())
				{
					ConstraintViolation<T> ct=it.next();
					sb.append(ct.getMessage()+";");
				}
			}
		}
		if(sb.length()>0)
		{
			objr.setCode(1);
			objr.setErrmsg(sb.toString());
		}else
			objr.setCode(0);
		return objr;
	}
}