01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one
03: * or more contributor license agreements. See the NOTICE file
04: * distributed with this work for additional information
05: * regarding copyright ownership. The ASF licenses this file
06: * to you under the Apache License, Version 2.0 (the
07: * "License"); you may not use this file except in compliance
08: * with the License. You may obtain a copy of the License at
09: *
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 java.util.HashMap;
23: import java.util.Map;
24:
25: import org.apache.commons.lang.builder.ToStringBuilder;
26: import org.apache.mina.statemachine.State;
27:
28: /**
29: * Abstract {@link StateContext} which uses a {@link Map} to store the
30: * attributes.
31: *
32: * @author The Apache MINA Project (dev@mina.apache.org)
33: * @version $Rev: 586695 $, $Date: 2007-10-20 04:01:17 -0600 (Sat, 20 Oct 2007) $
34: */
35: public abstract class AbstractStateContext implements StateContext {
36: private State currentState = null;
37: private Map<Object, Object> attributes = null;
38:
39: public Object getAttribute(Object key) {
40: return getAttributes().get(key);
41: }
42:
43: public State getCurrentState() {
44: return currentState;
45: }
46:
47: public void setAttribute(Object key, Object value) {
48: getAttributes().put(key, value);
49: }
50:
51: public void setCurrentState(State state) {
52: currentState = state;
53: }
54:
55: protected Map<Object, Object> getAttributes() {
56: if (attributes == null) {
57: attributes = new HashMap<Object, Object>();
58: }
59: return attributes;
60: }
61:
62: public String toString() {
63: return new ToStringBuilder(this ).append("currentState",
64: currentState).append("attributes", attributes)
65: .toString();
66: }
67: }
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