DAOFactory.java

package com.jqmobile.core.server.db.dao;

import com.jqmobile.core.dao.DAO;

public final class DAOFactory {
	private DAOFactory(){
	}
	@SuppressWarnings("unchecked")
	public static <T> T instance(Class<T> c){
		DAO annotation = c.getAnnotation(DAO.class);
		if(null != annotation){
			String name = annotation.impl();
			try {
				Class<?> cl = Class.forName(name, false, Thread.currentThread().getContextClassLoader());
				return (T) cl.newInstance();
			} catch (Exception e) {
				throw new RuntimeException("构建DAO失败", e);
			}
		}
		throw new RuntimeException("构建DAO失败");
	}
}