All Downloads are FREE. Search and download functionalities are using the official Maven repository.

com.sun.jersey.api.client.filter.ClientFilter Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.jersey.api.client.filter;

import com.sun.jersey.api.client.ClientHandler;
import com.sun.jersey.api.client.ClientHandlerException;
import com.sun.jersey.api.client.ClientRequest;
import com.sun.jersey.api.client.ClientResponse;


/**
 * A client filter capable of modifying the outbound HTTP request or 
 * the inbound HTTP response. 
 * 

* An application-based filter extends this class and implements the * {@link ClientHandler#handle} method. The general implementation pattern * is as follows: *

 *     class AppClientFilter extends ClientFilter {
 *
 *         public ClientResponse handle(ClientRequest cr) {
 *             // Modify the request
 *             ClientRequest mcr = modifyRequest(cr);
 * 
 *             // Call the next client handler in the filter chain
 *             ClientResponse resp = getNext().handle(mcr);
 * 
 *             // Modify the response
 *             return modifyResponse(resp);
 *         }
 *
 *     }
 * 
*

* A client filter is re-entrant and may be called by by more than one thread * at the same time. *

* A client filter instance MUST be occur at most once in any {@link Filterable} * instance, otherwise unexpected results may occur. * If it is necessary to add the same type of client filter more than once * to the same {@link Filterable} instance or to more than one {@link Filterable} * instance then a new instance of that filter MUST be added. * * @author [email protected] */ public abstract class ClientFilter implements ClientHandler { private ClientHandler next; /* package */ final void setNext(ClientHandler next) { this.next = next; } /** * Get the next client handler to invoke in the chain * of filters. * * @return the next client handler. */ public final ClientHandler getNext() { return next; } public abstract ClientResponse handle(ClientRequest cr) throws ClientHandlerException; }





© 2015 - 2024 Weber Informatics LLC | Privacy Policy