servletのセッション操作をラッピングするクラス

HogeHogeSession.java

public class HogeHogeSession {
	public static SessionWrapper<int> searchCondition = new SessionWrapper<int>(
			"HogeHoge");
}

SessionWrapper.java

import javax.servlet.http.HttpServletRequest;

import org.apache.log4j.Logger;

public class SessionWrapper<T> {
	protected static Logger log = Logger.getLogger(SessionWrapper.class);

	String sessionKey = "";

	public SessionWrapper(String sessionKey) {
		this.sessionKey = sessionKey;
	}

	@SuppressWarnings("unchecked")
	public T get(HttpServletRequest request) {
		Object value = request.getSession().getAttribute(sessionKey);
		log.debug("sesssion get key : " + sessionKey + ", value : " + value);
		return (T) value;
	}

	public void set(HttpServletRequest request, T value) {
		log.debug("sesssion set key : " + sessionKey + ", value : " + value);
		request.getSession().setAttribute(sessionKey, value);
	}
}