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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>package org.apache.felix.ipojo.manipulator.spi;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static java.lang.String.format;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.lang.annotation.Annotation;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.lang.reflect.ParameterizedType;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.lang.reflect.Type;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span><a name="line.27"></a> |
| <span class="sourceLineNo">028</span>/**<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> * Base annotation literal class to be extended when declaring stereotype bindings in a programmatic way.<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * Usage example:<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> * <pre><a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * public class InstantiateLiteral extends AnnotationLiteral<Instantiate> implements Instantiate {<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * public String name() {<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * return "";<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * }<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * }<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * </pre><a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a><a name="line.38"></a> |
| <span class="sourceLineNo">039</span> */<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>public abstract class AnnotationLiteral<T extends Annotation> implements Annotation {<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> private Class<? extends Annotation> annotationType;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> public Class<? extends Annotation> annotationType() {<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> if (annotationType == null) {<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> annotationType = findAnnotationType(getClass());<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> if (annotationType == null) {<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> throw new IllegalStateException(<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> format("Annotation %s does not specify its annotation type (T) in AnnotationLiteral<T>",<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> getClass().getName())<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> );<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> }<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> }<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> return annotationType;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> }<a name="line.55"></a> |
| <span class="sourceLineNo">056</span><a name="line.56"></a> |
| <span class="sourceLineNo">057</span> public org.objectweb.asm.Type getType() {<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> return org.objectweb.asm.Type.getType(annotationType());<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> }<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> private static Class<Annotation> findAnnotationType(final Class<? extends AnnotationLiteral> type) {<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> Class<?> implementer = findImplementer(type);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> return findTypeParameter(implementer);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> }<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> private static Class<Annotation> findTypeParameter(final Class<?> clazz) {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> // Get the T of AnnotationLiteral<T><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> Type type = clazz.getGenericSuperclass();<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> if (type instanceof ParameterizedType) {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> ParameterizedType pType = (ParameterizedType) type;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> return (Class<Annotation>) pType.getActualTypeArguments()[0];<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> }<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> return null;<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> }<a name="line.74"></a> |
| <span class="sourceLineNo">075</span><a name="line.75"></a> |
| <span class="sourceLineNo">076</span> private static Class<? extends AnnotationLiteral> findImplementer(final Class<? extends AnnotationLiteral> type) {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> Class<? extends AnnotationLiteral> superClass = type.getSuperclass().asSubclass(AnnotationLiteral.class);<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> if (AnnotationLiteral.class.equals(superClass)) {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> return type;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> } else {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> return findImplementer(superClass);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> }<a name="line.83"></a> |
| <span class="sourceLineNo">084</span>}<a name="line.84"></a> |
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