package com.google.code.rsser.web.validator;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.validation.Errors;import org.springframework.validation.Validator;import com.google.code.rsser.model.Feed;import com.google.code.rsser.service.FeedService;import com.google.code.rsser.service.UserService;public class SubscribeValidator implements Validator{	@Autowired	protected FeedService feedService;		@Autowired	protected UserService userService;		public boolean supports(Class clazz) {		return Feed.class.equals(clazz);	}	public void validate(Object obj, Errors errors) {		Feed feed = (Feed) obj;				if (feedService.isFeedSubscribed(userService.getCurrent(), feed.getFeedUrl())) {			errors.reject("subscription.alreadySubscribed");		}	}	}