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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.metadata.annotation.registry;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.felix.ipojo.manipulator.Reporter;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.felix.ipojo.manipulator.metadata.annotation.ComponentWorkbench;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.felix.ipojo.manipulator.spi.BindingContext;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.felix.ipojo.manipulator.util.ChainedAnnotationVisitor;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.objectweb.asm.AnnotationVisitor;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.objectweb.asm.ClassVisitor;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.objectweb.asm.FieldVisitor;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.objectweb.asm.MethodVisitor;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.objectweb.asm.Type;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.objectweb.asm.tree.ClassNode;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.objectweb.asm.tree.FieldNode;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.objectweb.asm.tree.MemberNode;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.objectweb.asm.tree.MethodNode;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import java.lang.annotation.ElementType;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import java.util.ArrayList;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import java.util.List;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span>/**<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * A {@link Selection} is used to select a subset of all supported {@link AnnotationVisitor}.<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * It's a query DSL.<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> */<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>public class Selection {<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> private BindingRegistry registry;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> private ComponentWorkbench workbench;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> private Reporter reporter;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> private MemberNode node;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> private int index = BindingContext.NO_INDEX;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> private String annotation;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> private ElementType elementType = null;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> private Object visitor;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> public Selection(BindingRegistry registry, ComponentWorkbench workbench, Reporter reporter) {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> this.registry = registry;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> this.workbench = workbench;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> this.reporter = reporter;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> }<a name="line.60"></a> |
| <span class="sourceLineNo">061</span><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> public Selection field(FieldVisitor visitor, FieldNode node) {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> this.visitor = visitor;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> this.node = node;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> this.elementType = ElementType.FIELD;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> return this;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> }<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> public Selection method(MethodVisitor visitor, MethodNode node) {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> this.visitor = visitor;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> this.node = node;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> this.elementType = ElementType.METHOD;<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> return this;<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> public Selection type(ClassVisitor visitor, ClassNode node) {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> this.visitor = visitor;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> this.node = node;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> this.elementType = ElementType.TYPE;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> return this;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> public Selection parameter(MethodVisitor visitor, MethodNode node, int index) {<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> this.visitor = visitor;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> this.index = index;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> this.node = node;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> this.elementType = ElementType.PARAMETER;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> return this;<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> }<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> public Selection annotatedWith(String desc) {<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> this.annotation = desc;<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> return this;<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> }<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> public AnnotationVisitor get() {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> List<AnnotationVisitor> visitors = list();<a name="line.97"></a> |
| <span class="sourceLineNo">098</span><a name="line.98"></a> |
| <span class="sourceLineNo">099</span> if (visitors.isEmpty()) {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> return null;<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> }<a name="line.101"></a> |
| <span class="sourceLineNo">102</span><a name="line.102"></a> |
| <span class="sourceLineNo">103</span> if (visitors.size() == 1) {<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> return visitors.get(0);<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> }<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> ChainedAnnotationVisitor chained = new ChainedAnnotationVisitor();<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> chained.getVisitors().addAll(visitors);<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> return chained;<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> }<a name="line.110"></a> |
| <span class="sourceLineNo">111</span><a name="line.111"></a> |
| <span class="sourceLineNo">112</span> private List<AnnotationVisitor> list() {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span><a name="line.113"></a> |
| <span class="sourceLineNo">114</span> BindingContext context = new BindingContext(workbench, reporter, Type.getType(annotation), node, elementType, index, visitor);<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> List<Binding> predicates = registry.getBindings(annotation);<a name="line.115"></a> |
| <span class="sourceLineNo">116</span><a name="line.116"></a> |
| <span class="sourceLineNo">117</span> List<AnnotationVisitor> visitors = new ArrayList<AnnotationVisitor>();<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> if (predicates != null && !predicates.isEmpty()) {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> collectMatchingVisitors(predicates, context, visitors);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> }<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> return visitors;<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> }<a name="line.122"></a> |
| <span class="sourceLineNo">123</span><a name="line.123"></a> |
| <span class="sourceLineNo">124</span><a name="line.124"></a> |
| <span class="sourceLineNo">125</span> private void collectMatchingVisitors(List<Binding> bindings, BindingContext context, List<AnnotationVisitor> visitors) {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> for (Binding binding : bindings) {<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> if (binding.getPredicate().matches(context)) {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> AnnotationVisitor visitor = binding.getFactory().newAnnotationVisitor(context);<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> if (visitor != null) {<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> visitors.add(visitor);<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> }<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> }<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> }<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> }<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span>}<a name="line.136"></a> |
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| </pre> |
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