01: /*
02: * Copyright 2004-2007 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16: package org.springframework.webflow.core.collection;
17:
18: import org.springframework.binding.collection.SharedMap;
19:
20: /**
21: * An attribute map that exposes a mutex that application code can synchronize
22: * on. This class wraps another shared map in an attribute map.
23: * <p>
24: * The mutex can be used to serialize concurrent access to the shared map's
25: * contents by multiple threads.
26: *
27: * @author Keith Donald
28: */
29: public class LocalSharedAttributeMap extends LocalAttributeMap
30: implements SharedAttributeMap {
31:
32: /**
33: * Creates a new shared attribute map.
34: * @param sharedMap the shared map
35: */
36: public LocalSharedAttributeMap(SharedMap sharedMap) {
37: super (sharedMap);
38: }
39:
40: public Object getMutex() {
41: return getSharedMap().getMutex();
42: }
43:
44: /**
45: * Returns the wrapped shared map.
46: */
47: protected SharedMap getSharedMap() {
48: return (SharedMap) getMapInternal();
49: }
50: }
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