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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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package sun.net.httpserver;
import java.io.*;
import java.util.*;
import java.lang.System.Logger;
import com.sun.net.httpserver.*;
import com.sun.net.httpserver.spi.*;

HttpContext represents a mapping between a protocol (http or https) together with a root URI path to a HttpHandler which is invoked to handle requests destined for the protocol/path on the associated HttpServer. 
 HttpContext instances are created by HttpServer.createContext(String, HttpHandler, HttpHandler, Object) 

/**
 * HttpContext represents a mapping between a protocol (http or https) together with a root URI path
 * to a {@link HttpHandler} which is invoked to handle requests destined
 * for the protocol/path on the associated HttpServer.
 * <p>
 * HttpContext instances are created by {@link HttpServer#createContext(String,String,HttpHandler,Object)}
 * <p>
 */
class HttpContextImpl extends HttpContext {

    private String path;
    private String protocol;
    private HttpHandler handler;
    private Map<String,Object> attributes = new HashMap<String,Object>();
    private ServerImpl server;
    /* system filters, not visible to applications */
    private LinkedList<Filter> sfilters = new LinkedList<Filter>();
    /* user filters, set by applications */
    private LinkedList<Filter> ufilters = new LinkedList<Filter>();
    private Authenticator authenticator;
    private AuthFilter authfilter;

    
constructor is package private.
/**
     * constructor is package private.
     */
    HttpContextImpl (String protocol, String path, HttpHandler cb, ServerImpl server) {
        if (path == null || protocol == null || path.length() < 1 || path.charAt(0) != '/') {
            throw new IllegalArgumentException ("Illegal value for path or protocol");
        }
        this.protocol = protocol.toLowerCase();
        this.path = path;
        if (!this.protocol.equals ("http") && !this.protocol.equals ("https")) {
            throw new IllegalArgumentException ("Illegal value for protocol");
        }
        this.handler = cb;
        this.server = server;
        authfilter = new AuthFilter(null);
        sfilters.add (authfilter);
    }

    
returns the handler for this context
Returns:
the HttpHandler for this context/**
     * returns the handler for this context
     * @return the HttpHandler for this context
     */
    public HttpHandler getHandler () {
        return handler;
    }

    public void setHandler (HttpHandler h) {
        if (h == null) {
            throw new NullPointerException ("Null handler parameter");
        }
        if (handler != null) {
            throw new IllegalArgumentException ("handler already set");
        }
        handler = h;
    }

    
returns the path this context was created with
Returns:
this context's path/**
     * returns the path this context was created with
     * @return this context's path
     */
    public String getPath() {
        return path;
    }

    
returns the server this context was created with
Returns:
this context's server/**
     * returns the server this context was created with
     * @return this context's server
     */
    public HttpServer getServer () {
        return server.getWrapper();
    }

    ServerImpl getServerImpl () {
        return server;
    }

    
returns the protocol this context was created with
Returns:
this context's path/**
     * returns the protocol this context was created with
     * @return this context's path
     */
    public String getProtocol() {
        return protocol;
    }

    
returns a mutable Map, which can be used to pass
configuration and other data to Filter modules
and to the context's exchange handler.

Every attribute stored in this Map will be visible to
every HttpExchange processed by this context
/**
     * returns a mutable Map, which can be used to pass
     * configuration and other data to Filter modules
     * and to the context's exchange handler.
     * <p>
     * Every attribute stored in this Map will be visible to
     * every HttpExchange processed by this context
     */
    public Map<String,Object> getAttributes() {
        return attributes;
    }

    public List<Filter> getFilters () {
        return ufilters;
    }

    List<Filter> getSystemFilters () {
        return sfilters;
    }

    public Authenticator setAuthenticator (Authenticator auth) {
        Authenticator old = authenticator;
        authenticator = auth;
        authfilter.setAuthenticator (auth);
        return old;
    }

    public Authenticator getAuthenticator () {
        return authenticator;
    }
    Logger getLogger () {
        return server.getLogger();
    }
}