Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
DeferredObjectImpl |
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| 1.3333333333333333;1.333 |
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.services.impl; | |
16 | ||
17 | import org.apache.hivemind.Location; | |
18 | import org.apache.hivemind.internal.Module; | |
19 | import org.apache.hivemind.schema.Translator; | |
20 | ||
21 | /** | |
22 | * An encapsulation of an invocation of | |
23 | * {@link org.apache.hivemind.schema.Translator#translate(org.apache.hivemind.internal.Module, java.lang.Class, java.lang.String, org.apache.hivemind.Location)}, | |
24 | * allowing the actual invocation (and all the object creation, etc., that entails) to be deferred, | |
25 | * or even avoided all together. | |
26 | * | |
27 | * @author Howard M. Lewis Ship | |
28 | * @since 4.0 | |
29 | */ | |
30 | public class DeferredObjectImpl implements DeferredObject | |
31 | { | |
32 | private final Module _module; | |
33 | ||
34 | private final Translator _objectTranslator; | |
35 | ||
36 | private final String _objectReference; | |
37 | ||
38 | private final Location _location; | |
39 | ||
40 | private Object _object; | |
41 | ||
42 | public DeferredObjectImpl(final Translator objectTranslator, final Module module, | |
43 | final String objectReference, final Location location) | |
44 | 0 | { |
45 | 0 | _objectTranslator = objectTranslator; |
46 | 0 | _module = module; |
47 | 0 | _objectReference = objectReference; |
48 | 0 | _location = location; |
49 | 0 | } |
50 | ||
51 | public synchronized Object getObject() | |
52 | { | |
53 | 0 | if (_object == null) |
54 | 0 | _object = _objectTranslator.translate( |
55 | _module, | |
56 | 0 | Object.class, |
57 | _objectReference, | |
58 | _location); | |
59 | ||
60 | 0 | return _object; |
61 | } | |
62 | ||
63 | public Location getLocation() | |
64 | { | |
65 | 0 | return _location; |
66 | } | |
67 | } |