Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
DojoUtils |
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| 3.5;3.5 |
1 | // Copyright May 16, 2006 The Apache Software Foundation |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | package org.apache.tapestry.dojo; |
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15 | ||
16 | import java.text.ParseException; |
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17 | ||
18 | import org.apache.hivemind.ApplicationRuntimeException; |
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19 | import org.apache.tapestry.IBinding; |
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20 | import org.apache.tapestry.IComponent; |
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21 | import org.apache.tapestry.json.JSONObject; |
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22 | ||
23 | /** |
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24 | * @author andyhot |
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25 | * @since 4.1 |
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26 | */ |
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27 | public final class DojoUtils |
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28 | { |
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29 | /* defeat insantiation */ |
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30 | 0 | private DojoUtils() { } |
31 | ||
32 | /** |
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33 | * Converts a parameter of an {@link IComponent} to an instance of {@link JSONObject}. |
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34 | * |
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35 | * @param component |
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36 | * @param parameterName |
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37 | * @return The parameter parsed into a json structure. |
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38 | */ |
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39 | public static JSONObject parseJSONParameter(IComponent component, String parameterName) |
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40 | { |
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41 | 0 | IBinding binding = component.getBinding(parameterName); |
42 | 0 | if (binding == null || binding.getObject() == null) |
43 | 0 | return new JSONObject(); |
44 | ||
45 | try |
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46 | { |
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47 | 0 | return new JSONObject((String) binding.getObject(String.class)); |
48 | } |
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49 | 0 | catch (ParseException ex) |
50 | { |
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51 | 0 | throw new ApplicationRuntimeException( DojoMessages.mustUseValidJsonInParameter(parameterName), |
52 | binding.getLocation() , ex); |
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53 | } |
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54 | } |
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55 | } |