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package org.mule.util.scan; |
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import org.mule.util.scan.annotations.ClosableClassReader; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.net.URL; |
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import org.objectweb.asm.ClassReader; |
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import org.objectweb.asm.commons.EmptyVisitor; |
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public class ImplementationClassScanner extends EmptyVisitor implements ClassScanner |
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{ |
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private Class implementationClass; |
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private boolean match; |
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private String className; |
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private ClassLoader classLoader; |
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public ImplementationClassScanner(Class implementationClass) |
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{ |
33 | 0 | this(implementationClass, Thread.currentThread().getContextClassLoader()); |
34 | 0 | } |
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public ImplementationClassScanner(Class implementationClass, ClassLoader classLoader) |
37 | 0 | { |
38 | 0 | if(implementationClass.isInterface()) |
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{ |
40 | 0 | throw new IllegalArgumentException("The class need to be an implementation not an interface"); |
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} |
42 | 0 | this.implementationClass = implementationClass; |
43 | 0 | this.classLoader = classLoader; |
44 | 0 | } |
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public void visit(int i, int i1, String s, String s1, String superName, String[] interfaces) |
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{ |
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49 | 0 | if(superName==null) |
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{ |
51 | 0 | return; |
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} |
53 | 0 | else if(superName.replaceAll("/",".").equals(implementationClass.getName())) |
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{ |
55 | 0 | match = true; |
56 | 0 | className = s; |
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} |
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else |
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{ |
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try |
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{ |
62 | 0 | ImplementationClassScanner scanner = new ImplementationClassScanner(implementationClass); |
63 | 0 | URL classURL = getClassURL(superName); |
64 | 0 | InputStream classStream = classURL.openStream(); |
65 | 0 | ClassReader r = new ClosableClassReader(classStream); |
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67 | 0 | r.accept(scanner, 0); |
68 | 0 | match = scanner.isMatch(); |
69 | 0 | className = scanner.getClassName(); |
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} |
71 | 0 | catch (IOException e) |
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{ |
73 | 0 | throw new RuntimeException(e); |
74 | 0 | } |
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} |
77 | 0 | } |
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public boolean isMatch() |
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{ |
81 | 0 | return match; |
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} |
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public String getClassName() |
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{ |
86 | 0 | return className; |
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} |
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public URL getClassURL(String className) |
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{ |
91 | 0 | String resource = className.replace(".", "/") + ".class"; |
92 | 0 | return classLoader.getResource(resource); |
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} |
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} |