AIR.Common.Web.Session.HttpContext.java Source code

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Here is the source code for AIR.Common.Web.Session.HttpContext.java

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/*******************************************************************************
 * Educational Online Test Delivery System 
 * Copyright (c) 2014 American Institutes for Research
 *   
 * Distributed under the AIR Open Source License, Version 1.0 
 * See accompanying file AIR-License-1_0.txt or at
 * http://www.smarterapp.org/documents/American_Institutes_for_Research_Open_Source_Software_License.pdf
 ******************************************************************************/
package AIR.Common.Web.Session;

import java.util.HashMap;
import java.util.Map;

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

import org.apache.commons.lang.NotImplementedException;

import TDS.Shared.Security.TDSIdentity;

public class HttpContext {

    private HttpServletRequest _request = null;
    private HttpServletResponse _response = null;
    private CookieHolder _cookies = null;
    private Server _server = new Server();
    private Map<String, Object> _cache = new HashMap<String, Object>();
    /*
     * singleton instance.
     */
    private static ThreadLocal<HttpContext> _httpContext = new ThreadLocal<HttpContext>() {
        protected HttpContext initialValue() {
            return new HttpContext();
        }
    };

    public static HttpContext getCurrentContext() {
        return _httpContext.get();
    }

    public HttpServletRequest getRequest() {
        return _request;
    }

    public String getUserAgent() {
        return _request.getHeader("user-agent");
    }

    public boolean isAuthenticated() {
        // todo: needs to be implemented.
        throw new NotImplementedException();
    }

    public Server getServer() {
        return _server;
    }

    public HttpServletResponse getResponse() {
        return _response;
    }

    public CookieHolder getCookies() {
        return _cookies;
    }

    public void setResponse(HttpServletResponse response) {
        _response = response;
    }

    public void setRequest(HttpServletRequest request) {
        _request = request;
        // update cookies list.
        _cookies = new CookieHolder(this, request.getCookies());
    }

    public void clearContext() {
        this._cache.clear();
        this._request = null;
        this._response = null;
        this._cookies = null;
        _httpContext.remove();
    }

    public void clearCache() {
        _cache.clear();
    }

    public void setItem(String name, Object value) {
        this._cache.put(name, value);
    }

    public Object getItem(String name) {
        return this._cache.get(name);
    }

    public void removeItem(String name) {
        this._cache.remove(name);
    }

    public boolean containsItem(String name) {
        return this._cache.containsKey(name);
    }

    // TODO mpatel - Implement Later.
    public boolean isDebuggingEnabled() {
        return true;
    }

    public TDSIdentity getIdentity() {
        return (TDSIdentity) this._cache.get("TDS_IDENTITY_CACHE_ITEM");
    }

    public void setIdentity(TDSIdentity value) {
        this._cache.put("TDS_IDENTITY_CACHE_ITEM", value);
    }

    private HttpContext() {
        // just to hide the default constructor.
    }
}