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How to use performClone method of org.powermock.classloading.DeepCloner class

Best Powermock code snippet using org.powermock.classloading.DeepCloner.performClone

Source:DeepCloner.java

...69	 * @return A deep clone of the object to clone.70	 */71	public <T> T clone(T objectToClone, boolean includeStandardJavaType) {72		assertObjectNotNull(objectToClone);73		return performClone(ClassLoaderUtil.loadClass(getType(objectToClone), targetCL), objectToClone,74				includeStandardJavaType);75	}76	@SuppressWarnings("unchecked")77	private static <T> Class<T> getType(T object) {78		if (object == null) {79			return null;80		}81		return (Class<T>) (object instanceof Class ? object : object.getClass());82	}83	private static boolean isClass(Object object) {84		if (object == null) {85			return false;86		}87		return object instanceof Class<?>;88	}89	private static void assertObjectNotNull(Object object) {90		if (object == null) {91			throw new IllegalArgumentException("Object to clone cannot be null");92		}93	}94	@SuppressWarnings("unchecked")95	private <T> T performClone(Class<T> targetClass, Object source, boolean shouldCloneStandardJavaTypes) {96		Object target = null;97		if (targetClass.isArray() && !isClass(source)) {98			return (T) instantiateArray(targetCL, targetClass, source, shouldCloneStandardJavaTypes);99		} else if (isJavaReflectMethod(targetClass)) {100			return (T) cloneJavaReflectMethod(source);101		} else if (targetClass.isPrimitive() || isSunClass(targetClass) || isJavaReflectClass(targetClass)) {102			return (T) source;103		} else if (isSerializableCandidate(targetClass, source)) {104			return (T) serializationClone(source);105		} else if (targetClass.isEnum()) {106			return (T) cloneEnum(targetCL, source);107		} else if (isClass(source)) {108			return (T) ClassLoaderUtil.loadClass(getType(source), targetCL);109		} else {110			target = isClass(source) ? source : Whitebox.newInstance(targetClass);111		}112		if (target != null) {113			referenceMap.put(source, target);114			cloneFields(targetCL, targetClass, source, target, referenceMap, shouldCloneStandardJavaTypes);115		}116		return (T) target;117	}118	private Object cloneJavaReflectMethod(Object source) {119		Method sourceMethod = (Method) source;120		Class<?> declaringClass = sourceMethod.getDeclaringClass();121		Class<?> targetClassLoadedWithTargetCL = ClassLoaderUtil.loadClass(declaringClass, targetCL);122		Method targetMethod = null;123		try {124			targetMethod = targetClassLoadedWithTargetCL.getDeclaredMethod(sourceMethod.getName(),125					sourceMethod.getParameterTypes());126		} catch (Exception e) {127			SafeExceptionRethrower.safeRethrow(e);128		}129		if (sourceMethod.isAccessible()) {130			targetMethod.setAccessible(true);131		}132		return targetMethod;133	}134	private boolean isJavaReflectMethod(Class<?> cls) {135		return cls.getName().equals(Method.class.getName());136	}137	private boolean isSunClass(Class<?> cls) {138		return cls.getName().startsWith("sun.");139	}140	private boolean isJavaReflectClass(Class<?> cls) {141		return cls.getName().startsWith("java.lang.reflect");142	}143	private <T> boolean isSerializableCandidate(Class<T> targetClass, Object source) {144		return isStandardJavaType(targetClass)145				&& (isSerializable(targetClass) || isImpliticlySerializable(targetClass))146				&& !Map.class.isAssignableFrom(source.getClass())147				&& !Iterable.class.isAssignableFrom(source.getClass());148	}149	private static boolean isImpliticlySerializable(Class<?> cls) {150		return cls.isPrimitive();151	}152	private static boolean isSerializable(Class<?> cls) {153		return Serializable.class.isAssignableFrom(cls);154	}155	/*156	 * Perform simple serialization157	 */158	private Object serializationClone(Object source) {159		ObjectOutputStream oos = null;160		ObjectInputStream ois = null;161		try {162			ByteArrayOutputStream bos = new ByteArrayOutputStream();163			oos = new ObjectOutputStream(bos);164			oos.writeObject(source);165			oos.flush();166			ByteArrayInputStream bin = new ByteArrayInputStream(bos.toByteArray());167			ois = new ObjectInputStream(bin);168			return ois.readObject();169		} catch (Exception e) {170			throw new RuntimeException(e);171		} finally {172			close(oos);173			close(ois);174		}175	}176	private void close(Closeable closeable) {177		try {178			if (closeable != null) {179				closeable.close();180			}181		} catch (IOException e) {182		}183	}184	@SuppressWarnings({ "unchecked", "rawtypes" })185	private Object cloneEnum(ClassLoader targetCL, Object source) {186		Object target;187		final Class enumClassLoadedByTargetCL = ClassLoaderUtil.loadClass(getType(source), targetCL);188		target = getEnumValue(source, enumClassLoadedByTargetCL);189		return target;190	}191	@SuppressWarnings("unchecked")192	private <T> void cloneFields(ClassLoader targetCL, Class<T> targetClass, Object source, Object target,193			Map<Object, Object> referenceMap, boolean cloneStandardJavaTypes) {194		Class<?> currentTargetClass = targetClass;195		while (currentTargetClass != null) {196			for (Field field : currentTargetClass.getDeclaredFields()) {197				if (field.getAnnotation(doNotClone) != null) {198					continue;199				}200				field.setAccessible(true);201				try {202					final Field declaredField = Whitebox.getField(getType(source), field.getName());203					declaredField.setAccessible(true);204					final Object object = declaredField.get(source);205					final Object instantiatedValue;206					if (object == source) {207						instantiatedValue = target;208					} else if (referenceMap.containsKey(object)) {209						instantiatedValue = referenceMap.get(object);210					} else {211						if (object == null && !isIterable(object)) {212							instantiatedValue = object;213						} else {214							Class<Object> type = getType(object);215							if (type.getName().equals("void")) {216								type = Class.class.cast(Class.class);217							}218							final Class<Object> typeLoadedByCL = ClassLoaderUtil.loadClass(type, targetCL219                            );220							if (type.isEnum()) {221								instantiatedValue = getEnumValue(object, typeLoadedByCL);222							} else {223								instantiatedValue = performClone(typeLoadedByCL, object, cloneStandardJavaTypes);224							}225						}226					}227					final boolean needsUnsafeWrite = field.isEnumConstant() || isStaticFinalModifier(field);228					if (needsUnsafeWrite) {229						UnsafeFieldWriter.write(field, target, instantiatedValue);230					} else {231						field.set(target, instantiatedValue);232					}233				} catch (RuntimeException e) {234					throw e;235				} catch (Exception e) {236					throw new RuntimeException(e);237				}238			}239			currentTargetClass = currentTargetClass.getSuperclass();240		}241	}242	private static <T> boolean isStandardJavaType(Class<T> targetClass) {243		return targetClass.getName().startsWith("java.");244	}245	private static boolean isStaticFinalModifier(final Field field) {246		final int modifiers = field.getModifiers();247		return Modifier.isFinal(modifiers) && Modifier.isStatic(modifiers)248				|| field.getDeclaringClass().equals(Character.class) && field.getName().equals("MIN_RADIX");249	}250	private static boolean isIterable(final Object object) {251		return object != null && isIterable(object.getClass());252	}253	private static boolean isIterable(final Class<?> cls) {254		return Iterable.class.isAssignableFrom(cls);255	}256	@SuppressWarnings({ "unchecked", "rawtypes" })257	private static Enum getEnumValue(final Object enumValueOfSourceClassloader,258			final Class<Object> enumTypeLoadedByTargetCL) {259		return Enum.valueOf((Class) enumTypeLoadedByTargetCL, ((Enum) enumValueOfSourceClassloader).toString());260	}261	private Object instantiateArray(ClassLoader targetCL, Class<?> arrayClass, Object objectToClone,262                                    boolean cloneStandardJavaTypes) {263		final int arrayLength = Array.getLength(objectToClone);264		final Object array = Array.newInstance(arrayClass.getComponentType(), arrayLength);265		for (int i = 0; i < arrayLength; i++) {266			final Object object = Array.get(objectToClone, i);267			final Object performClone;268			if (object == null) {269				performClone = null;270			} else {271				performClone = performClone(ClassLoaderUtil.loadClass(getType(object), targetCL),272						object, cloneStandardJavaTypes);273			}274			Array.set(array, i, performClone);275		}276		return array;277	}278	/**279	 * Most of this code has been copied from the Sun14ReflectionProvider in the280	 * XStream project. Some changes has been made, namely if the field is281	 * static final then the {@link Unsafe#staticFieldOffset(Field)} method is282	 * used instead of {@link Unsafe#objectFieldOffset(Field)}.283	 * 284	 * @author Joe Walnes285	 * @author Brian Slesinsky286	 * @author Johan Haleby287	 */288	private static class UnsafeFieldWriter {...

performClone

Using AI Code Generation

1	at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)2	at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)3	at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81)4	at java.lang.reflect.Field.set(Field.java:764)5	at org.powermock.classloading.DeepCloner$1.visit(DeepCloner.java:94)6	at org.powermock.classloading.DeepCloner$1.visit(DeepCloner.java:91)7	at java.lang.reflect.Field.accept(Field.java:710)8	at org.powermock.classloading.DeepCloner.clone(DeepCloner.java:91)9	at org.powermock.classloading.DeepCloner.clone(DeepCloner.java:53)10	at org.powermock.classloading.DeepCloner.clone(DeepCloner.java:34)11	at org.powermock.classloading.DeepCloner.clone(DeepCloner.java:24)12	at org.powermock.classloading.DeepCloner.clone(DeepCloner.java:19)13	at org.powermock.classloading.DeepCloner.clone(DeepCloner.java:14)14	at org.powermock.classloading.DeepCloner.clone(DeepCloner.java:9)15	at org.powermock.classloading.DeepCloner.clone(DeepCloner.java:4)16	at org.powermock.classloading.DeepClonerTest.testClone(DeepClonerTest.java:34)17Connection connection = PowerMockito.mock(Connection.class);18PoolableConnection poolableConnection = new PoolableConnection(connection, null, true, true, 1, 1);19PoolableConnection clone = (PoolableConnection) DeepCloner.clone(poolableConnection);

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