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30 day Evaluation License registered to hlship@comcast.net Your 30 day evaluation period has expired. Please visit http://www.cenqua.com to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
StateBinding.java | 50% | 100% | 100% | 92.3% |
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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.ApplicationRuntimeException; | |
18 | import org.apache.hivemind.Location; | |
19 | import org.apache.hivemind.util.Defense; | |
20 | import org.apache.tapestry.coerce.ValueConverter; | |
21 | import org.apache.tapestry.engine.state.ApplicationStateManager; | |
22 | ||
23 | /** | |
24 | * Binding used to efficiently query whether an application state object (visit, global and friends) | |
25 | * exists without actually creating it (or creating a session). | |
26 | * | |
27 | * @author Howard M. Lewis Ship | |
28 | * @since 4.0 | |
29 | */ | |
30 | public class StateBinding extends AbstractBinding | |
31 | { | |
32 | private ApplicationStateManager _applicationStateManager; | |
33 | ||
34 | private String _objectName; | |
35 | ||
36 | 2 | public StateBinding(String description, ValueConverter valueConverter, Location location, |
37 | ApplicationStateManager applicationStateManager, String objectName) | |
38 | { | |
39 | 2 | super(description, valueConverter, location); |
40 | ||
41 | 2 | Defense.notNull(applicationStateManager, "applicationStateManager"); |
42 | 2 | Defense.notNull(objectName, "objectName"); |
43 | ||
44 | 2 | _applicationStateManager = applicationStateManager; |
45 | 2 | _objectName = objectName; |
46 | } | |
47 | ||
48 | 2 | public Object getObject() |
49 | { | |
50 | 2 | try |
51 | { | |
52 | 2 | boolean exists = _applicationStateManager.exists(_objectName); |
53 | ||
54 | 1 | return exists ? Boolean.TRUE : Boolean.FALSE; |
55 | } | |
56 | catch (Exception ex) | |
57 | { | |
58 | 1 | throw new ApplicationRuntimeException(ex.getMessage(), getLocation(), ex); |
59 | } | |
60 | } | |
61 | } |
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