/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010 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
 * https://glassfish.dev.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 javax.ws.rs;

import javax.ws.rs.core.Response;

/**
 * Runtime exception for applications.
 * <p>
 * This exception may be thrown by a resource method, provider or 
 * {@link javax.ws.rs.core.StreamingOutput} implementation if a specific 
 * HTTP error response needs to be produced. Only effective if thrown prior to
 * the response being committed.
 *
 * @author Paul.Sandoz@Sun.Com
 */
public class WebApplicationException extends RuntimeException {

    private static final long serialVersionUID = 11660101L;
    
    private Response response;

    /**
     * Construct a new instance with a blank message and default HTTP status code of 500
     */
    public WebApplicationException() {
        this(null, Response.Status.INTERNAL_SERVER_ERROR);
    }

    /**
     * Construct a new instance using the supplied response
     * @param response the response that will be returned to the client, a value
     * of null will be replaced with an internal server error response (status
     * code 500)
     */
    public WebApplicationException(Response response) {
        this(null,response);        
    }
    
    /**
     * Construct a new instance with a blank message and specified HTTP status code
     * @param status the HTTP status code that will be returned to the client
     */
    public WebApplicationException(int status) {
        this(null, status);
    }
    
    /**
     * Construct a new instance with a blank message and specified HTTP status code
     * @param status the HTTP status code that will be returned to the client
     * @throws IllegalArgumentException if status is null
     */
    public WebApplicationException(Response.Status status) {
        this(null, status);
    }
    
    /**
     * Construct a new instance with a blank message and default HTTP status code of 500
     * @param cause the underlying cause of the exception
     */
    public WebApplicationException(Throwable cause) {
        this(cause,Response.Status.INTERNAL_SERVER_ERROR);
    }
    
    /**
     * Construct a new instance using the supplied response
     * @param response the response that will be returned to the client, a value
     * of null will be replaced with an internal server error response (status
     * code 500)
     * @param cause the underlying cause of the exception
     */
    public WebApplicationException(Throwable cause, Response response) {
        super(cause);
        if (response==null)
            this.response = Response.serverError().build();
        else
            this.response = response;        
    }
    
    /**
     * Construct a new instance with a blank message and specified HTTP status code
     * @param status the HTTP status code that will be returned to the client
     * @param cause the underlying cause of the exception
     */
    public WebApplicationException(Throwable cause, int status) {
        this(cause, Response.status(status).build());
    }
    
    /**
     * Construct a new instance with a blank message and specified HTTP status code
     * @param status the HTTP status code that will be returned to the client
     * @param cause the underlying cause of the exception
     * @throws IllegalArgumentException if status is null
     */
    public WebApplicationException(Throwable cause, Response.Status status) {
        this(cause, Response.status(status).build());
    }
    
    /**
     * Get the HTTP response.
     *
     * @return the HTTP response.
     */
    public Response getResponse() {
        return response;
    }
}