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 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You under the Apache License, Version 2.0
  * (the "License"); you may not use this file except in compliance with
  * the License.  You may obtain a copy of the License at
  * 
  *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.tomcat.bayeux;
An interface that defines methods for managing Bayeux request meta messages.

Author(s):
Guy A. Molinari
Filip Hanik
Version:
0.9
public interface BayeuxRequest {
    public static final String LAST_REQ_ATTR = "org.apache.cometd.bayeux.last_request";
    public static final String CURRENT_REQ_ATTR = "org.apache.cometd.bayeux.current_request";
    public static final String JSON_MSG_ARRAY = "org.apache.cometd.bayeux.json_msg_array";

    
Validates a specific request. This method must be called prior to process() as a request can do pre processing in the validate method.
Should the validation fail, an error object is returned containing an error message, and potentially a stack trace if an exception was generated

Returns:
HttpError - null if no error was detected, an HttpError object containing information about the error.
    public HttpError validate();
    
    
processes a remote client Bayeux message

Parameters:
prevops - the operation requested by the previous request, in case of chained requests.
Returns:
int - returns the interest operation for a CometEvent. Currently not used
Throws:
BayeuxException - if an error was detected, and the appropriate error response couldn't be delivered to the client.
    public int process(int prevopsthrows BayeuxException;
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