Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
InitialValueAnnotationWorker |
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| 3.0;3 |
1 | // Copyright 2005 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 | ||
15 | package org.apache.tapestry.annotations; |
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16 | ||
17 | import java.lang.reflect.Method; |
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18 | ||
19 | import org.apache.hivemind.Location; |
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20 | import org.apache.hivemind.Resource; |
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21 | import org.apache.tapestry.enhance.EnhancementOperation; |
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22 | import org.apache.tapestry.spec.IComponentSpecification; |
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23 | import org.apache.tapestry.spec.IPropertySpecification; |
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24 | import org.apache.tapestry.spec.PropertySpecification; |
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25 | ||
26 | /** |
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27 | * Looks for {@link org.apache.tapestry.annotations.InitialValue} annotations on methods that don't |
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28 | * have a {@link org.apache.tapestry.annotations.Persist} annotation (that's handled by |
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29 | * {@link org.apache.tapestry.annotations.PersistAnnotationWorker}); adds an |
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30 | * {@link org.apache.tapestry.spec.IPropertySpecification} for the property, so that its initial |
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31 | * value may be set. |
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32 | * |
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33 | * @author Howard M. Lewis Ship |
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34 | * @since 4.0 |
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35 | */ |
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36 | 4 | public class InitialValueAnnotationWorker implements SecondaryAnnotationWorker |
37 | { |
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38 | /** |
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39 | * Returns true if the method has the InitialValue annotation. |
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40 | */ |
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41 | public boolean canEnhance(Method method) |
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42 | { |
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43 | 2 | return method.getAnnotation(InitialValue.class) != null; |
44 | } |
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45 | ||
46 | public void peformEnhancement(EnhancementOperation op, IComponentSpecification spec, |
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47 | Method method, Resource classResource) |
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48 | { |
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49 | 3 | InitialValue iv = method.getAnnotation(InitialValue.class); |
50 | ||
51 | 3 | if (iv == null) |
52 | 1 | return; |
53 | ||
54 | 2 | if (method.getAnnotation(Persist.class) != null) |
55 | 1 | return; |
56 | ||
57 | 1 | Location location = AnnotationUtils.buildLocationForAnnotation(method, iv, classResource); |
58 | ||
59 | 1 | String propertyName = AnnotationUtils.getPropertyName(method); |
60 | ||
61 | // Define a transient property |
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62 | ||
63 | 1 | IPropertySpecification pspec = new PropertySpecification(); |
64 | ||
65 | 1 | pspec.setName(propertyName); |
66 | 1 | pspec.setLocation(location); |
67 | 1 | pspec.setInitialValue(iv.value()); |
68 | ||
69 | 1 | spec.addPropertySpecification(pspec); |
70 | 1 | } |
71 | } |