1 // Copyright 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 package org.jph.channels.process;
15
16 /***
17 * The Processor processes a message and is primarily used by the
18 * ProcessingOutputChannel.
19 *
20 * @author Peter Veentjer.
21 */
22 public interface Processor<Min,Mout> {
23
24 /***
25 * Processes the message.
26 *
27 * @param msg the message to process.
28 * @return the resulting msg. This can be null or the orginal message.
29 * @throws NullPointerException if msg is null.
30 */
31 Mout process(Min msg);
32 }