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A bundle containing code of all jar-based modules that provide JAX-RS and Jersey-related features. Such a bundle is *only intended* for developers that do not use Maven's dependency system. The bundle does not include code for contributes, tests and samples.

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package com.sun.jersey.server.impl.cdi;

import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.logging.Level;
import java.util.logging.Logger;

import jersey.repackaged.org.objectweb.asm.ClassWriter;
import jersey.repackaged.org.objectweb.asm.MethodVisitor;
import jersey.repackaged.org.objectweb.asm.Opcodes;

/**
 * Generates any number of plain bean classes on the fly, loading them with
 * the thread context class loader.
 * 

* Generated bean classes have a single, public, no-arg constructor. * * @author robc */ public class BeanGenerator { private static final Logger LOGGER = Logger.getLogger(CDIExtension.class.getName()); private String prefix; private Method defineClassMethod; private static AtomicInteger generatedClassCounter = new AtomicInteger(0); BeanGenerator(String prefix) { this.prefix = prefix; try { defineClassMethod = AccessController.doPrivileged(new PrivilegedExceptionAction() { public Method run() throws Exception { Class classLoaderClass = Class.forName("java.lang.ClassLoader"); Method method = classLoaderClass.getDeclaredMethod("defineClass", new Class[]{String.class, byte[].class, int.class, int.class}); method.setAccessible(true); return method; } }); } catch (PrivilegedActionException e) { LOGGER.log(Level.SEVERE, "failed to access method ClassLoader.defineClass", e); // TODO - wrapping and rethrowing for now throw new RuntimeException(e); } } Class createBeanClass() { ClassWriter writer = new ClassWriter(0); String name = prefix + Integer.toString(generatedClassCounter.addAndGet(1)); writer.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC, name, null, "java/lang/Object", null); MethodVisitor methodVisitor = writer.visitMethod(Opcodes.ACC_PUBLIC, "", "()V", null, null); methodVisitor.visitCode(); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "", "()V"); methodVisitor.visitInsn(Opcodes.RETURN); methodVisitor.visitMaxs(1, 1); methodVisitor.visitEnd(); writer.visitEnd(); byte[] bytecode = writer.toByteArray(); ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); try { Class result = (Class) defineClassMethod.invoke(classLoader, name.replace("/", "."), bytecode, 0, bytecode.length); LOGGER.fine("Created class " + result.getName()); return result; } catch (Throwable t) { LOGGER.log(Level.SEVERE, "error calling ClassLoader.defineClass", t); return null; } } }





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