01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: package org.apache.catalina;
19:
20: import java.io.IOException;
21:
22: import javax.servlet.ServletException;
23:
24: /**
25: * This interface should be implemented by servlets which would like to handle
26: * asynchronous IO, recieving events when data is available for reading, and
27: * being able to output data without the need for being invoked by the container.
28: * Note: When this interface is implemented, the service method of the servlet will
29: * never be called, and will be replaced with a begin event.
30: */
31: public interface CometProcessor {
32:
33: /**
34: * Process the given Comet event.
35: *
36: * @param event The Comet event that will be processed
37: * @throws IOException
38: * @throws ServletException
39: */
40: public void event(CometEvent event) throws IOException,
41: ServletException;
42:
43: }
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