Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
DojoUtils |
|
| 4.0;4 |
1 | // Copyright May 16, 2006 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 | package org.apache.tapestry.dojo; | |
15 | ||
16 | import java.text.ParseException; | |
17 | ||
18 | import org.apache.hivemind.ApplicationRuntimeException; | |
19 | import org.apache.tapestry.IBinding; | |
20 | import org.apache.tapestry.IComponent; | |
21 | import org.apache.tapestry.json.JSONObject; | |
22 | ||
23 | /** | |
24 | * @author andyhot | |
25 | * @since 4.1 | |
26 | */ | |
27 | public final class DojoUtils | |
28 | { | |
29 | /* defeat instantiation */ | |
30 | 0 | private DojoUtils() { } |
31 | ||
32 | /** | |
33 | * Converts a parameter of an {@link IComponent} to an instance of {@link JSONObject}. | |
34 | * | |
35 | * @param component | |
36 | * @param parameterName | |
37 | * @return The parameter parsed into a json structure. | |
38 | */ | |
39 | public static JSONObject parseJSONParameter(IComponent component, String parameterName) | |
40 | { | |
41 | 0 | IBinding binding = component.getBinding(parameterName); |
42 | 0 | if (binding == null || binding.getObject() == null) |
43 | 0 | return new JSONObject(); |
44 | ||
45 | try | |
46 | { | |
47 | 0 | return new JSONObject((String) binding.getObject(String.class)); |
48 | } | |
49 | 0 | catch (ParseException ex) |
50 | { | |
51 | 0 | throw new ApplicationRuntimeException( DojoMessages.mustUseValidJsonInParameter(parameterName), |
52 | binding.getLocation() , ex); | |
53 | } | |
54 | } | |
55 | } |