public CircuitElementView instantiateElement(
UUID elementUUID,
float positionX,
float positionY,
CircuitElementManager elementManager,
WireManager wireManager)
throws InvocationTargetException, IllegalAccessException, InstantiationException,
NoSuchMethodException {
Class<? extends CircuitElementView> viewType = ElementTypeUUID.VIEW_MAP.get(elementUUID);
if (viewType == null) throw new IllegalArgumentException("Missing element view UUID");
Class<? extends CircuitElement> elementType = ElementTypeUUID.ELEMENT_MAP.get(elementUUID);
if (elementType == null) throw new IllegalArgumentException("Missing element type UUID");
Constructor<? extends CircuitElementView> viewConstructor;
viewConstructor =
viewType.getConstructor(
Context.class, CircuitElement.class, float.class, float.class, WireManager.class);
Constructor<? extends CircuitElement> elementConstructor;
elementConstructor = elementType.getConstructor(CircuitElementManager.class);
CircuitElement element = elementConstructor.newInstance(elementManager);
return viewConstructor.newInstance(context, element, 0, 0, wireManager);
}
/**
* Factory method, equivalent to a "fromXML" for step creation. Looks for a class with the same
* name as the XML tag, with the first letter capitalized. For example, <call /> is
* abbot.script.Call.
*/
public static Step createStep(Resolver resolver, Element el) throws InvalidScriptException {
String tag = el.getName();
Map attributes = createAttributeMap(el);
String name = tag.substring(0, 1).toUpperCase() + tag.substring(1);
if (tag.equals(TAG_WAIT)) {
attributes.put(TAG_WAIT, "true");
name = "Assert";
}
try {
name = "abbot.script." + name;
Log.debug("Instantiating " + name);
Class cls = Class.forName(name);
try {
// Steps with contents require access to the XML element
Class[] argTypes = new Class[] {Resolver.class, Element.class, Map.class};
Constructor ctor = cls.getConstructor(argTypes);
return (Step) ctor.newInstance(new Object[] {resolver, el, attributes});
} catch (NoSuchMethodException nsm) {
// All steps must support this ctor
Class[] argTypes = new Class[] {Resolver.class, Map.class};
Constructor ctor = cls.getConstructor(argTypes);
return (Step) ctor.newInstance(new Object[] {resolver, attributes});
}
} catch (ClassNotFoundException cnf) {
String msg = Strings.get("step.unknown_tag", new Object[] {tag});
throw new InvalidScriptException(msg);
} catch (InvocationTargetException ite) {
Log.warn(ite);
throw new InvalidScriptException(ite.getTargetException().getMessage());
} catch (Exception exc) {
Log.warn(exc);
throw new InvalidScriptException(exc.getMessage());
}
}
public static <T> Constructor<T> findConstructor(Class<T> cls, boolean canFixAccess)
throws IllegalArgumentException {
try {
Constructor<T> ctor = cls.getDeclaredConstructor();
if (canFixAccess) {
checkAndFixAccess(ctor);
} else {
// Has to be public...
if (!Modifier.isPublic(ctor.getModifiers())) {
throw new IllegalArgumentException(
"Default constructor for "
+ cls.getName()
+ " is not accessible (non-public?): not allowed to try modify access via Reflection: can not instantiate type");
}
}
return ctor;
} catch (NoSuchMethodException e) {;
} catch (Exception e) {
ClassUtil.unwrapAndThrowAsIAE(
e,
"Failed to find default constructor of class "
+ cls.getName()
+ ", problem: "
+ e.getMessage());
}
return null;
}
@SuppressWarnings("unchecked")
private <T> T _get(Class<T> type, Set<Class<?>> seenTypes) {
if (!seenTypes.add(type)) {
throw new IllegalStateException("Cycle in dependencies for " + type);
}
Object singleton = singletons.get(type);
if (singleton != null) {
return (T) singleton;
}
try {
Constructor<T> constructor = getConstructor(type);
Class<?>[] parameterTypes = constructor.getParameterTypes();
Object[] parameters = new Object[parameterTypes.length];
for (int i = 0; i < parameterTypes.length; i++) {
parameters[i] = _get(parameterTypes[i], seenTypes);
}
T instance = postProcess(constructor.newInstance(parameters));
singletons.put(type, instance);
return instance;
} catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
throw new IllegalStateException("Unable to create instance of " + type);
}
}
public <BLOCK extends Block> BLOCK newBlock(
String name, Class<BLOCK> cls, Class itemClass, String title) {
try {
int id = config.getBlock(name, 4095).getInt();
Constructor<BLOCK> ctor = cls.getConstructor(int.class);
BLOCK block = ctor.newInstance(id);
String qualName = assetKey + ":" + name;
block.setUnlocalizedName(qualName);
// block.func_111022_d(qualName.toLowerCase()); // Set default icon name
// block.func_111022_d(qualName); // Set default icon name
block.setTextureName(qualName); // Set default icon name
GameRegistry.registerBlock(block, itemClass);
if (title != null) {
LanguageRegistry.addName(block, title);
if (clientSide) {
// System.out.printf("%s: BaseMod.newBlock: %s: creative tab = %s\n",
// this, block.getUnlocalizedName(), block.getCreativeTabToDisplayOn());
if (block.getCreativeTabToDisplayOn() == null && !title.startsWith("["))
block.setCreativeTab(CreativeTabs.tabMisc);
}
}
if (block instanceof IBlock) registeredBlocks.add((IBlock) block);
return block;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
protected void _addConstructorMixIns(Class<?> mixin) {
MemberKey[] ctorKeys = null;
int ctorCount = (_constructors == null) ? 0 : _constructors.size();
for (Constructor<?> ctor : mixin.getDeclaredConstructors()) {
switch (ctor.getParameterTypes().length) {
case 0:
if (_defaultConstructor != null) {
_addMixOvers(ctor, _defaultConstructor, false);
}
break;
default:
if (ctorKeys == null) {
ctorKeys = new MemberKey[ctorCount];
for (int i = 0; i < ctorCount; ++i) {
ctorKeys[i] = new MemberKey(_constructors.get(i).getAnnotated());
}
}
MemberKey key = new MemberKey(ctor);
for (int i = 0; i < ctorCount; ++i) {
if (!key.equals(ctorKeys[i])) {
continue;
}
_addMixOvers(ctor, _constructors.get(i), true);
break;
}
}
}
}
private static void testPotato(
Class<? extends Collection> implClazz, Class<? extends List> argClazz) throws Throwable {
try {
System.out.printf("implClazz=%s, argClazz=%s\n", implClazz.getName(), argClazz.getName());
final int iterations = 100000;
final List<Integer> list = (List<Integer>) argClazz.newInstance();
final Integer one = Integer.valueOf(1);
final List<Integer> oneElementList = Collections.singletonList(one);
final Constructor<? extends Collection> constr = implClazz.getConstructor(Collection.class);
final Thread t =
new CheckedThread() {
public void realRun() {
for (int i = 0; i < iterations; i++) {
list.add(one);
list.remove(one);
}
}
};
t.setDaemon(true);
t.start();
for (int i = 0; i < iterations; i++) {
Collection<?> coll = constr.newInstance(list);
Object[] elts = coll.toArray();
check(elts.length == 0 || (elts.length == 1 && elts[0] == one));
}
} catch (Throwable t) {
unexpected(t);
}
}
private void validateClass(Class<?> source, ValidationProblemCollector problems) {
int modifiers = source.getModifiers();
if (Modifier.isInterface(modifiers)) {
problems.add("Must be a class, not an interface");
}
if (source.getEnclosingClass() != null) {
if (Modifier.isStatic(modifiers)) {
if (Modifier.isPrivate(modifiers)) {
problems.add("Class cannot be private");
}
} else {
problems.add("Enclosed classes must be static and non private");
}
}
Constructor<?>[] constructors = source.getDeclaredConstructors();
for (Constructor<?> constructor : constructors) {
if (constructor.getParameterTypes().length > 0) {
problems.add("Cannot declare a constructor that takes arguments");
break;
}
}
Field[] fields = source.getDeclaredFields();
for (Field field : fields) {
int fieldModifiers = field.getModifiers();
if (!field.isSynthetic()
&& !(Modifier.isStatic(fieldModifiers) && Modifier.isFinal(fieldModifiers))) {
problems.add(field, "Fields must be static final.");
}
}
}
@SuppressWarnings("unchecked")
public static <T> Constructor<T> findConstructor(Class<T> type, Class<?>... paramTypes) {
Constructor<T>[] ctors = (Constructor<T>[]) type.getConstructors();
for (Constructor<T> ctor : ctors)
if (typesMatch(paramTypes, ctor.getParameterTypes())) return ctor;
return null;
}
public Bean(String classPackage, String clazz, ClassLoaderStrategy cls, Bean topLevelBean)
throws Exception {
// Get the no-arg constructor and create the bean
try {
Class classOfBean = ObjectXml.getClassOfBean((ClassLoader) cls, classPackage + "." + clazz);
Constructor ct = null;
// check whether this class is an inner class
if (classOfBean.getEnclosingClass() != null) {
ct = classOfBean.getConstructor(new Class[] {classOfBean.getEnclosingClass()});
beanObject = ct.newInstance(new Object[] {topLevelBean.getBeanObject()});
} else {
ct = classOfBean.getConstructor((Class[]) null);
beanObject = ct.newInstance((Object[]) null);
}
// Get an array of property descriptors
beanInfo = Introspector.getBeanInfo(classOfBean);
PropertyDescriptor[] pds = beanInfo.getPropertyDescriptors();
// load property descriptors into hashtable
propDesc = new Properties();
for (int i = 0; i < pds.length; i++) {
propDesc.put(pds[i].getName(), pds[i]);
}
} catch (Exception e) {
System.err.println("Exception creating bean: " + e.getMessage());
e.printStackTrace();
throw e;
}
}
private Validator newValidator(API api) throws Exception {
for (Constructor c : api.validator().getDeclaredConstructors()) {
c.setAccessible(true);
Class[] ps = c.getParameterTypes();
return (Validator) c.newInstance();
}
return null;
}
private static void testImplementation(Class<? extends Collection> implClazz) throws Throwable {
testPotato(implClazz, Vector.class);
testPotato(implClazz, CopyOnWriteArrayList.class);
final Constructor<? extends Collection> constr = implClazz.getConstructor(Collection.class);
final Collection<Object> coll = constr.newInstance(Arrays.asList(new String[] {}));
coll.add(1);
equal(coll.toString(), "[1]");
}
/**
* @param cacheName Cache name.
* @param key Key.
* @return Data key.
* @throws Exception In case of error.
*/
private Object key(String cacheName, int key) throws Exception {
Class<?> cls = Class.forName(GridSpringDynamicCacheManager.class.getName() + "$DataKey");
Constructor<?> cons = cls.getDeclaredConstructor(String.class, Object.class);
cons.setAccessible(true);
return cons.newInstance(cacheName, key);
}
public static Object loadFrame(
JopSession session, String className, String instance, boolean scrollbar)
throws ClassNotFoundException {
if (className.indexOf(".pwg") != -1) {
GrowFrame frame =
new GrowFrame(
className, session.getGdh(), instance, new GrowFrameCb(session), session.getRoot());
frame.validate();
frame.setVisible(true);
} else {
Object frame;
if (instance == null) instance = "";
JopLog.log(
"JopSpider.loadFrame: Loading frame \"" + className + "\" instance \"" + instance + "\"");
try {
Class clazz = Class.forName(className);
try {
Class argTypeList[] =
new Class[] {session.getClass(), instance.getClass(), boolean.class};
Object argList[] = new Object[] {session, instance, new Boolean(scrollbar)};
System.out.println("JopSpider.loadFrame getConstructor");
Constructor constructor = clazz.getConstructor(argTypeList);
try {
frame = constructor.newInstance(argList);
} catch (Exception e) {
System.out.println(
"Class instanciation error: "
+ className
+ " "
+ e.getMessage()
+ " "
+ constructor);
return null;
}
// frame = clazz.newInstance();
JopLog.log("JopSpider.loadFrame openFrame");
openFrame(frame);
return frame;
} catch (NoSuchMethodException e) {
System.out.println("NoSuchMethodException: Unable to get frame constructor " + className);
} catch (Exception e) {
System.out.println(
"Exception: Unable to get frame class " + className + " " + e.getMessage());
}
} catch (ClassNotFoundException e) {
System.out.println("Class not found: " + className);
throw new ClassNotFoundException();
}
return null;
}
return null;
}
/** @see jaskell.compiler.JaskellVisitor#visit(Constructor) */
public Object visit(Constructor a) {
Type ret = a.getType();
if (ret != null) return ret;
String vname = a.getName();
ConstructorDefinition def = (ConstructorDefinition) a.lookup(vname);
if (def == null) // unknown symbol
throw new CompilerException("Unknown constructor " + vname);
ret = new TypeInstantiator(def.getType()).instance();
a.setType(ret);
return ret;
}
/** Try to create a Java object using a one-string-param constructor. */
public static Object newStringConstructor(String type, String param) throws Exception {
Constructor c = Utils.getClass(type).getConstructor(String.class);
try {
return c.newInstance(param);
} catch (InvocationTargetException e) {
Throwable t = e.getTargetException();
if (t instanceof Exception) {
throw (Exception) t;
} else {
throw e;
}
}
}
@Override
public T create() {
Class<T> concreteClass = type.getConcreteClass();
try {
Constructor<T> declaredConstructor = concreteClass.getDeclaredConstructor();
declaredConstructor.setAccessible(true);
return declaredConstructor.newInstance();
} catch (InvocationTargetException e) {
throw UncheckedException.throwAsUncheckedException(e.getTargetException());
} catch (Exception e) {
throw UncheckedException.throwAsUncheckedException(e);
}
}
/** {@inheritDoc} */
public T convert(F from) {
Object[] initArgs = new Object[argumentConverters.size()];
int i = 0;
for (ArgumentConverter<F, Object> argumentConverter : argumentConverters) {
initArgs[i++] = argumentConverter.convert(from);
}
try {
return constructor.newInstance(initArgs);
} catch (Exception e) {
throw new IntrospectionException(
"Unable to create an object of class " + constructor.getDeclaringClass().getName(), e);
}
}
public void printAll(Class c) {
Constructor[] cs = this.getAllConstructorsFromClass(c);
System.out.println(" Constructors:");
for (Constructor constructor : cs) {
System.out.print(" " + constructor);
if (constructor.getDeclaringClass() != c)
System.out.println(" (inherited from " + constructor.getDeclaringClass().getName() + ")");
else System.out.println();
}
System.out.println(" Methods:");
Method[] ms = this.getAllMethodsFromClass(c);
for (Method method : ms) {
System.out.print(" " + method);
if (method.getDeclaringClass() != c)
System.out.println(" (inherited from " + method.getDeclaringClass().getName() + ")");
else System.out.println();
}
System.out.println(" Classes:");
Class[] cls = this.getClassesFromClass(c);
for (Class class1 : cls) {
System.out.println(" " + class1);
}
System.out.println(" Fields:");
Field[] fs = this.getFieldsFromClass(c);
for (Field field : fs) {
System.out.print(" " + field);
if (field.getDeclaringClass() != c)
System.out.println(" (inherited from " + field.getDeclaringClass().getName() + ")");
else System.out.println();
}
System.out.println(" Interfaces:");
Class[] is = this.getInterfacesFromClass(c);
for (Class class2 : is) {
System.out.println(" " + class2);
}
System.out.println(" Local Methods:");
Method[] mls = this.getLocalMethodsFromClass(c);
for (Method method2 : mls) {
System.out.print(" " + method2);
if (method2.getDeclaringClass() != c)
System.out.println(" (inherited from " + method2.getDeclaringClass().getName() + ")");
else System.out.println();
}
}
/**
* Create a default object of the given type. Prefers constructors with as few arguments as
* possible. Creates an empty proxy for interfaces.
*
* @param type type to instantiate
* @return default instance
* @throws Exception if the default instance could not be created
*/
private static Object instantiateType(Class<?> type) throws Exception {
if (type.isPrimitive()) return Defaults.defaultValue(type);
else if (type == Void.class) return null;
else if (type.isArray()) return Array.newInstance(type, 0);
else if (type.isInterface())
return Proxy.newProxyInstance(
type.getClassLoader(),
new Class[] {type},
new InvocationHandler() {
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
return null;
}
});
// Take a constructor with as few params as possible
Constructor constructor = type.getDeclaredConstructors()[0];
for (Constructor<?> c : type.getDeclaredConstructors()) {
if (c.getParameterTypes().length < constructor.getParameterTypes().length) constructor = c;
}
Object[] params = new Object[constructor.getParameterTypes().length];
for (int i = 0; i < constructor.getParameterTypes().length; i++) {
params[i] = instantiateType(constructor.getParameterTypes()[i]);
}
return constructor.newInstance(params);
}
/**
* Finds the constructor of the given class that is compatible with the given arguments.
*
* @param type the class to find the constructor of
* @param args the arguments
* @return the constructor
*/
public static Constructor findConstructor(Class<?> type, Object[] args) {
outer:
for (Constructor constructor : type.getConstructors()) {
Class<?>[] paramTypes = constructor.getParameterTypes();
if (paramTypes.length != args.length) continue;
for (int i = 0; i < args.length; i++) {
Object arg = args[i];
if (arg != null && !paramTypes[i].isAssignableFrom(arg.getClass())) continue outer;
if (arg == null && paramTypes[i].isPrimitive()) continue outer;
}
return constructor;
}
throw new GrammarException(
"No constructor found for %s and the given %s arguments", type, args.length);
}
/**
* Method that can be called to try to create an instantiate of specified type. Instantiation is
* done using default no-argument constructor.
*
* @param canFixAccess Whether it is possible to try to change access rights of the default
* constructor (in case it is not publicly accessible) or not.
* @throws IllegalArgumentException If instantiation fails for any reason; except for cases where
* constructor throws an unchecked exception (which will be passed as is)
*/
public static <T> T createInstance(Class<T> cls, boolean canFixAccess)
throws IllegalArgumentException {
Constructor<T> ctor = findConstructor(cls, canFixAccess);
if (ctor == null) {
throw new IllegalArgumentException(
"Class " + cls.getName() + " has no default (no arg) constructor");
}
try {
return ctor.newInstance();
} catch (Exception e) {
ClassUtil.unwrapAndThrowAsIAE(
e, "Failed to instantiate class " + cls.getName() + ", problem: " + e.getMessage());
return null;
}
}
/** @param addParamAnnotations Whether parameter annotations are to be added as well */
protected void _addMixOvers(
Constructor<?> mixin, AnnotatedConstructor target, boolean addParamAnnotations) {
for (Annotation a : mixin.getDeclaredAnnotations()) {
if (_annotationIntrospector.isHandled(a)) {
target.addOrOverride(a);
}
}
if (addParamAnnotations) {
Annotation[][] pa = mixin.getParameterAnnotations();
for (int i = 0, len = pa.length; i < len; ++i) {
for (Annotation a : pa[i]) {
target.addOrOverrideParam(i, a);
}
}
}
}
ProxyConnection createProxyConnection() throws Exception {
// we should always have a separate handler for each proxy connection, so
// that object methods behave as expected... the handler covers
// all object methods on behalf of the proxy.
InvocationHandler handler = new ProxyConnectionInvocationHandler();
return (ProxyConnection) CON_PROXY_CTOR.newInstance(new Object[] {handler});
}
public static <T> T newInstance(
Constructor<T> constructor, boolean strict, Object... parameters) {
if (!strict) parameters = convertArray(parameters, constructor.getParameterTypes());
Class<T> type = constructor.getDeclaringClass();
if (deprecated(type))
escalator.escalate(
"Instantiating a deprecated class: " + type.getName(), BeanUtil.class, null);
try {
return constructor.newInstance(parameters);
} catch (InstantiationException e) {
throw ExceptionMapper.configurationException(e, type);
} catch (IllegalAccessException e) {
throw ExceptionMapper.configurationException(e, type);
} catch (InvocationTargetException e) {
throw ExceptionMapper.configurationException(e, type);
}
}
private boolean isCompatible(Constructor<?> constructor, Object... arguments) {
try {
constructor.newInstance(arguments);
return true;
} catch (Exception e) {
return false;
}
}
private static Object createArgumentPlaceholderForUnknownClass(
Class<?> clazz, Integer placeholderId) throws IllegalAccessException, InstantiationException {
FinalClassArgumentCreator<?> creator = FINAL_CLASS_ARGUMENT_CREATORS.get(clazz);
if (creator != null) return creator.createArgumentPlaceHolder(placeholderId);
for (Constructor constructor : clazz.getConstructors()) {
Class<?>[] params = constructor.getParameterTypes();
if (params.length != 1) continue;
try {
if (params[0] == String.class)
return constructor.newInstance(String.valueOf(placeholderId));
if (isNumericClass(params[0])) return constructor.newInstance(placeholderId);
} catch (IllegalAccessException e1) {
} catch (InvocationTargetException e2) {
}
}
return clazz.newInstance();
}
/** {@inheritDoc} */
@Override
public HadoopJob createJob(Class<? extends HadoopJob> jobCls, HadoopJobId jobId, IgniteLogger log)
throws IgniteCheckedException {
assert jobCls != null;
try {
Constructor<? extends HadoopJob> constructor =
jobCls.getConstructor(HadoopJobId.class, HadoopDefaultJobInfo.class, IgniteLogger.class);
return constructor.newInstance(jobId, this, log);
}
// NB: java.lang.NoClassDefFoundError may be thrown from Class#getConstructor() call.
catch (Throwable t) {
if (t instanceof Error) throw (Error) t;
throw new IgniteCheckedException(t);
}
}
public void apply()
throws IllegalAccessException, InvocationTargetException, InstantiationException {
if (type.isEnum()) {
for (T instance : type.getEnumConstants()) {
assertThat(
instance.toString(),
is(
type.getCanonicalName().substring(type.getPackage().getName().length() + 1)
+ "."
+ ((Enum<?>) instance).name()));
}
return;
}
for (Constructor<?> constructor : type.getDeclaredConstructors()) {
if (constructor.isSynthetic() && skipSynthetic) {
continue;
}
constructor.setAccessible(true);
Class<?>[] parameterTypes = constructor.getParameterTypes();
Object[] actualArguments = new Object[parameterTypes.length];
Object[] otherArguments = new Object[parameterTypes.length];
int index = 0;
for (Class<?> parameterType : parameterTypes) {
putInstance(parameterType, actualArguments, otherArguments, index++);
}
int testIndex = 0;
@SuppressWarnings("unchecked")
T instance = (T) constructor.newInstance(actualArguments);
assertThat(instance, is(instance));
assertThat(instance, not(is((Object) null)));
assertThat(instance, not(is(new Object())));
Object similarInstance = constructor.newInstance(actualArguments);
assertThat(instance.hashCode(), is(similarInstance.hashCode()));
assertThat(instance, is(similarInstance));
if (skipToString) {
assertThat(instance.toString(), notNullValue());
} else if (optionalToStringRegex == null) {
checkString(instance);
} else {
assertThat(instance.toString(), new RegexMatcher(optionalToStringRegex));
}
for (Object otherArgument : otherArguments) {
Object[] compareArguments = new Object[actualArguments.length];
int argumentIndex = 0;
for (Object actualArgument : actualArguments) {
if (argumentIndex == testIndex) {
compareArguments[argumentIndex] = otherArgument;
} else {
compareArguments[argumentIndex] = actualArgument;
}
argumentIndex++;
}
Object unlikeInstance = constructor.newInstance(compareArguments);
assertThat(instance.hashCode(), not(is(unlikeInstance)));
assertThat(instance, not(is(unlikeInstance)));
testIndex++;
}
}
}
/**
* Prints all constructors of a class
*
* @param cl a class
*/
public static void printConstructors(Class cl) {
Constructor[] constructors = cl.getDeclaredConstructors();
for (Constructor c : constructors) {
String name = c.getName();
System.out.print(" ");
String modifiers = Modifier.toString(c.getModifiers());
if (modifiers.length() > 0) System.out.print(modifiers + " ");
System.out.print(name + "(");
// print parameter types
Class[] paramTypes = c.getParameterTypes();
for (int j = 0; j < paramTypes.length; j++) {
if (j > 0) System.out.print(", ");
System.out.print(paramTypes[j].getName());
}
System.out.println(");");
}
}
