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A Hypermedia as the Engine of Application State (HATEOAS) library

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package au.com.mountainpass.hyperstate.server;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.http.HttpHeaders;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class ResponseHeaderInterceptor implements HandlerInterceptor {

  @Override
  public void afterCompletion(final HttpServletRequest request, final HttpServletResponse response,
      final Object handler, final Exception ex) throws Exception {

  }

  @Override
  public void postHandle(final HttpServletRequest request, final HttpServletResponse response,
      final Object handler, final ModelAndView modelAndView) throws Exception {

  }

  @Override
  public boolean preHandle(final HttpServletRequest request, final HttpServletResponse response,
      final Object handler) throws Exception {
    response.setHeader(HttpHeaders.VARY, "Accept");
    return true;
  }

}