1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.statemachine.context;
21
22 import org.apache.mina.statemachine.event.Event;
23
24 /**
25 * Lookups a {@link StateContext} from a collection of event arguments.
26 *
27 * @author The Apache MINA Project (dev@mina.apache.org)
28 */
29 public interface StateContextLookup {
30 /**
31 * Searches the arguments from an {@link Event} and returns a
32 * {@link StateContext} if any of the arguments holds one. NOTE! This method
33 * must create a new {@link StateContext} if a compatible object is in
34 * the arguments and the next time that same object is passed to this
35 * method the same {@link StateContext} should be returned.
36 */
37 StateContext lookup(Object[] eventArgs);
38 }