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Java > Open Source Codes > org > apache > tapestry > binding > HiveMindBinding


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
15 package org.apache.tapestry.binding;
16
17 import org.apache.hivemind.Location;
18 import org.apache.hivemind.util.Defense;
19 import org.apache.tapestry.coerce.ValueConverter;
20 import org.apache.tapestry.services.InjectedValueProvider;
21
22 /**
23  * A binding that accesses a HiveMind object. This is similar to injecting a HiveMind object as a
24  * property and referencing that property.
25  *
26  * @author Howard M. Lewis Ship
27  * @since 4.0
28  */
29 public class HiveMindBinding extends AbstractBinding
30 {
31     private String JavaDoc _objectReference;
32
33     private InjectedValueProvider _provider;
34
35     public HiveMindBinding(String JavaDoc description, ValueConverter valueConverter, Location location,
36             String JavaDoc objectReference, InjectedValueProvider provider)
37     {
38         super(description, valueConverter, location);
39
40         Defense.notNull(objectReference, "objectReference");
41         Defense.notNull(provider, "provider");
42
43         _objectReference = objectReference;
44         _provider = provider;
45     }
46
47     public Object JavaDoc getObject()
48     {
49         return _provider.obtainValue(_objectReference, getLocation());
50     }
51
52 }
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