/**
* Infer value type in one collection type
*
* @param genericType
* @return
*/
public static Type inferElementTypeIn(Type collectionType) {
if (collectionType instanceof Class) {
return Object.class;
} else if (collectionType instanceof ParameterizedType) {
ParameterizedType parameterizedCollectionType = (ParameterizedType) collectionType;
Type collectionValueType = parameterizedCollectionType.getActualTypeArguments()[0];
if (collectionValueType instanceof Class) {
return (Class) collectionValueType;
} else if (collectionValueType instanceof ParameterizedType) {
ParameterizedType type = (ParameterizedType) collectionValueType;
return type.getRawType();
} else if (collectionValueType instanceof WildcardType) {
throw new UnusableTypeException(
"we can't infer element type in widlcard type " + collectionType.toString());
} else if (collectionValueType instanceof TypeVariable) {
throw new UnusableTypeException(
"we can't infer element type in type variable " + collectionType.toString());
}
} else if (collectionType instanceof WildcardType) {
throw new UnusableTypeException(
"we can't infer element type in widlcard type " + collectionType.toString());
} else if (collectionType instanceof TypeVariable) {
throw new UnusableTypeException(
"we can't infer element type in type variable " + collectionType.toString());
}
throw new UnusableTypeException("we can't infer element type in " + collectionType.toString());
}
public Object inject(InjectionContext context) {
if (injectionProvider == null) {
return null;
}
Object injectedValue;
try {
injectedValue = injectionProvider.provideInjection(context);
} catch (InjectionProviderException e) {
Throwable ex = e;
if (ex.getCause() != null) {
ex = ex.getCause();
}
String message =
"InjectionProvider unable to resolve @"
+ injectionAnnotation.annotationType().getSimpleName()
+ " "
+ injectionType.toString();
throw new ConstructionException(message, ex);
}
if (injectedValue == null && !optional) {
String message =
"Non-optional @"
+ injectionAnnotation.annotationType().getSimpleName()
+ " "
+ injectionType.toString()
+ " was null in "
+ injectedClass.getName();
throw new ConstructionException(message);
}
return getInjectedValue(injectedValue);
}
public String toString() {
StringBuilder sb = new StringBuilder();
if (ownerType != null) {
if (ownerType instanceof Class) sb.append(((Class) ownerType).getName());
else sb.append(ownerType.toString());
sb.append(".");
if (ownerType instanceof ParameterizedTypeImpl) {
// Find simple name of nested type by removing the
// shared prefix with owner.
sb.append(
rawType
.getName()
.replace(((ParameterizedTypeImpl) ownerType).rawType.getName() + "$", ""));
} else sb.append(rawType.getName());
} else sb.append(rawType.getName());
if (actualTypeArguments != null && actualTypeArguments.length > 0) {
sb.append("<");
boolean first = true;
for (Type t : actualTypeArguments) {
if (!first) sb.append(", ");
if (t instanceof Class) sb.append(((Class) t).getName());
else sb.append(t.toString());
first = false;
}
sb.append(">");
}
return sb.toString();
}
public static void main(String[]argv) throws Exception {
Method m = Goo.class.getDeclaredMethod("getStrings");
Type t = m.getGenericReturnType();
if (!t.toString().equals("java.util.List<java.lang.String>"))
throw new RuntimeException("Incorrect signature. Signature is "+t);
m = IFace.class.getDeclaredMethod("getStrings");
t = m.getGenericReturnType();
if (!t.toString().equals("java.util.List<java.lang.String>"))
throw new RuntimeException("Incorrect signature. Signature is "+t);
}
@Override
public T deserialize(final JsonElement je, final Type type, final JsonDeserializationContext jdc)
throws JsonParseException {
// Get the "content" element from the parsed JSON
JsonElement content = je;
if (je.isJsonObject() && je.getAsJsonObject().has("contents")) {
content = je.getAsJsonObject().get("contents");
final int lastIndex = type.toString().lastIndexOf('.');
final String name = type.toString().substring(lastIndex + 1).toLowerCase();
if (content.isJsonObject() && content.getAsJsonObject().has(name)) {
content = content.getAsJsonObject().get(name);
}
}
return new Gson().fromJson(content, type);
}
/**
* Factory method that can be used if type information is passed as Java typing returned from
* <code>getGenericXxx</code> methods (usually for a return or argument type).
*/
public JavaType _fromType(Type type, TypeBindings context) {
// simple class?
if (type instanceof Class<?>) {
Class<?> cls = (Class<?>) type;
/* 24-Mar-2010, tatu: Better create context if one was not passed;
* mostly matters for root serialization types
*/
if (context == null) {
context = new TypeBindings(cls);
}
return _fromClass(cls, context);
}
// But if not, need to start resolving.
if (type instanceof ParameterizedType) {
return _fromParamType((ParameterizedType) type, context);
}
if (type instanceof GenericArrayType) {
return _fromArrayType((GenericArrayType) type, context);
}
if (type instanceof TypeVariable<?>) {
return _fromVariable((TypeVariable<?>) type, context);
}
if (type instanceof WildcardType) {
return _fromWildcard((WildcardType) type, context);
}
// sanity check
throw new IllegalArgumentException("Unrecognized Type: " + type.toString());
}
public void testBindsGenericsToSuperclassEnvironment()
throws SecurityException, NoSuchMethodException {
TypeEnvironmentFactory env = new TypeEnvironmentFactory();
Type type = Grandpa.class.getMethod("returnsGeneric", new Class[0]).getGenericReturnType();
Type asSeenFromGrandpa = env.getEnvironment(Grandpa.class).bind(type);
assertTrue(asSeenFromGrandpa instanceof TypeVariable);
assertEquals("T", asSeenFromGrandpa.toString());
Type asSeenFromDad = env.getEnvironment(Dad.class).bind(type);
assertTrue(asSeenFromDad instanceof ParameterizedType);
assertEquals("java.util.List<T>", asSeenFromDad.toString());
ParameterizedType asSeenFromSon = (ParameterizedType) env.getEnvironment(Son.class).bind(type);
assertType_isCollectionOfClass_withElementsOfClass(asSeenFromSon, List.class, String.class);
}
@SuppressWarnings("rawtypes")
protected Class getClassAtDepth(Type type, int depth) throws Exception {
if (depth <= 0) {
String className = type.toString();
if (className.length() >= 6 && className.substring(0, 6).equalsIgnoreCase("class ")) {
className = className.substring(6);
}
if (className.indexOf("<") >= 0) {
className = className.substring(0, className.indexOf("<"));
}
try {
return Class.forName(className);
} catch (ClassNotFoundException ex) {
// ugly fix for primitive data types
if (className.equalsIgnoreCase("byte")) return Byte.class;
if (className.equalsIgnoreCase("short")) return Short.class;
if (className.equalsIgnoreCase("int")) return Integer.class;
if (className.equalsIgnoreCase("long")) return Long.class;
if (className.equalsIgnoreCase("float")) return Float.class;
if (className.equalsIgnoreCase("double")) return Double.class;
if (className.equalsIgnoreCase("char")) return Character.class;
if (className.equalsIgnoreCase("boolean")) return Boolean.class;
throw ex;
}
}
depth--;
ParameterizedType pType = (ParameterizedType) type;
Type[] typeArgs = pType.getActualTypeArguments();
return getClassAtDepth(typeArgs[typeArgs.length - 1], depth);
}
public <T> Class<T> inferValueClassForListOrSet(Type genericType, Class<?> entityClass) {
log.debug(
"Infer parameterized value class for collection type {} of entity class {} ",
genericType.toString(),
entityClass.getCanonicalName());
Class<T> valueClass;
if (genericType instanceof ParameterizedType) {
ParameterizedType pt = (ParameterizedType) genericType;
Type[] actualTypeArguments = pt.getActualTypeArguments();
if (actualTypeArguments.length > 0) {
Type type = actualTypeArguments[actualTypeArguments.length - 1];
valueClass = getClassFromType(type);
} else {
throw new AchillesBeanMappingException(
"The type '"
+ genericType.getClass().getCanonicalName()
+ "' of the entity '"
+ entityClass.getCanonicalName()
+ "' should be parameterized");
}
} else {
throw new AchillesBeanMappingException(
"The type '"
+ genericType.getClass().getCanonicalName()
+ "' of the entity '"
+ entityClass.getCanonicalName()
+ "' should be parameterized");
}
log.trace("Inferred value class : {}", valueClass.getCanonicalName());
return valueClass;
}
/** Returns the most elemental class associated with {@link genericType} May return null */
public static Class<?> classFromType(Type genericType) {
Class<?> defKlass;
if (genericType == null) {
return null;
}
if (genericType instanceof Class<?>) {
defKlass = (Class<?>) genericType;
} else if (genericType instanceof ParameterizedType) {
ParameterizedType pt = (ParameterizedType) genericType;
Type typeArgs[] = pt.getActualTypeArguments();
if (typeArgs.length != 1) {
// Odd - better to ignore this
return null;
}
return classFromType(typeArgs[0]);
} else if (genericType instanceof GenericArrayType) {
GenericArrayType gat = (GenericArrayType) genericType;
defKlass = gat.getGenericComponentType().getClass();
} else if (genericType instanceof TypeVariable<?>) {
TypeVariable<?> tv = (TypeVariable<?>) genericType;
defKlass = tv.getClass();
} else {
LOG.debug("classFromType unknown instance type [" + genericType.toString() + "] - ignoring");
defKlass = null;
}
return defKlass;
}
@Override
public String toString() {
StringBuilder b = new StringBuilder();
for (Class<?> ann : annotations) {
b.append(ann.getSimpleName()).append(' ');
}
b.append((type instanceof Class<?>) ? ((Class<?>) type).getSimpleName() : type.toString());
return b.toString();
}
/**
* This helper class is used to find the class name from Type. This may not be reliable.
*
* @param genericType
* @return
*/
private String getClassName(Type genericType) {
String name = genericType.toString();
if (name == null || name.length() == 0)
return DatabaseObject.class.getSimpleName(); // Use the top-most name
if (name.endsWith(">")) {
int index = name.lastIndexOf(".");
if (index > 0) return name.substring(index + 1, name.length() - 1);
}
return DatabaseObject.class.getSimpleName(); // Use as the default
}
/**
* Convert the type into a string. The string representation approximates the code that would be
* used to define the type.
*
* @param type - the type.
* @return a string representation of the type, similar to how it was declared.
*/
public static String toString(Type type) {
if (type instanceof ParameterizedType) return toString((ParameterizedType) type);
if (type instanceof WildcardType) return toString((WildcardType) type);
if (type instanceof GenericArrayType) return toString((GenericArrayType) type);
if (type instanceof Class) {
final Class theClass = (Class) type;
return (theClass.isArray() ? theClass.getName() + "[]" : theClass.getName());
}
return type.toString();
}
public static <X> String createParameterId(Type type, Set<Annotation> annotations) {
StringBuilder builder = new StringBuilder();
if (type instanceof Class<?>) {
Class<?> c = (Class<?>) type;
builder.append(c.getName());
} else {
builder.append(type.toString());
}
builder.append(createAnnotationCollectionId(annotations));
return builder.toString();
}
/**
* 获取一个类的某个一个泛型参数
*
* @param klass 类
* @param index 参数下标 （从 0 开始）
* @return 泛型参数类型
*/
@SuppressWarnings("unchecked")
public static <T> Class<T> getTypeParam(Class<?> klass, int index) {
Type[] types = getTypeParams(klass);
if (index >= 0 && index < types.length) {
Type t = types[index];
Class<T> clazz = (Class<T>) Lang.getTypeClass(t);
if (clazz == null) throw Lang.makeThrow("Type '%s' is not a Class", t.toString());
return clazz;
}
throw Lang.makeThrow("Class type param out of range %d/%d", index, types.length);
}
public static void main(String... args) {
try {
Class<?> c = Class.forName(args[0]);
out.format("Class:%n %s%n%n", c.getCanonicalName());
out.format("Modifiers:%n %s%n%n", Modifier.toString(c.getModifiers()));
out.format("Type Parameters:%n");
TypeVariable<?>[] tv = c.getTypeParameters();
if (tv.length != 0) {
out.format(" ");
for (TypeVariable<?> t : tv) out.format("%s ", t.getName());
out.format("%n%n");
} else {
out.format(" -- No Type Parameters --%n%n");
}
out.format("Implemented Interfaces:%n");
Type[] intfs = c.getGenericInterfaces();
if (intfs.length != 0) {
for (Type intf : intfs) out.format(" %s%n", intf.toString());
out.format("%n");
} else {
out.format(" -- No Implemented Interfaces --%n%n");
}
out.format("Inheritance Path:%n");
List<Class<?>> l = new ArrayList<Class<?>>();
printAncestor(c, l);
if (l.size() != 0) {
for (Class<?> cl : l) out.format(" %s%n", cl.getCanonicalName());
out.format("%n");
} else {
out.format(" -- No Super Classes --%n%n");
}
out.format("Annotations:%n");
Annotation[] ann = c.getAnnotations();
if (ann.length != 0) {
for (Annotation a : ann) out.format(" %s%n", a.toString());
out.format("%n");
} else {
out.format(" -- No Annotations --%n%n");
}
// production code should handle this exception more gracefully
} catch (ClassNotFoundException x) {
x.printStackTrace();
}
}
private static Class getClass(Type type) {
if (type instanceof Class) {
return (Class) type;
} else if (type instanceof ParameterizedType) {
ParameterizedType parameterizedType = (ParameterizedType) type;
if (parameterizedType.getRawType() instanceof Class) {
return (Class) parameterizedType.getRawType();
}
}
throw new IllegalArgumentException(
"Type parameter ["
+ type.toString()
+ "] not a class or "
+ "parameterized type whose raw type is a class");
}
private Class<?> getGenericSubtype(Class<?> clazz, Type t) {
if (!(clazz.getName().equals("void") || t.toString().equals("void"))) {
try {
ParameterizedType paramType = (ParameterizedType) t;
Type[] argTypes = paramType.getActualTypeArguments();
if (argTypes.length > 0) {
Class<?> c = (Class<?>) argTypes[0];
return c;
}
} catch (ClassCastException e) {
// FIXME: find out why this happens to only certain types
}
}
return clazz;
}
/**
* Deserialize response body to Java object, according to the return type and the Content-Type
* response header.
*
* @param <T> Type
* @param response HTTP response
* @param returnType The type of the Java object
* @return The deserialized Java object
* @throws ApiException If fail to deserialize response body, i.e. cannot read response body or
* the Content-Type of the response is not supported.
*/
@SuppressWarnings("unchecked")
public <T> T deserialize(Response response, Type returnType) throws ApiException {
if (response == null || returnType == null) {
return null;
}
if ("byte[]".equals(returnType.toString())) {
// Handle binary response (byte array).
try {
return (T) response.body().bytes();
} catch (IOException e) {
throw new ApiException(e);
}
} else if (returnType.equals(File.class)) {
// Handle file downloading.
return (T) downloadFileFromResponse(response);
}
String respBody;
try {
if (response.body() != null) respBody = response.body().string();
else respBody = null;
} catch (IOException e) {
throw new ApiException(e);
}
if (respBody == null || "".equals(respBody)) {
return null;
}
String contentType = response.headers().get("Content-Type");
if (contentType == null) {
// ensuring a default content type
contentType = "application/json";
}
if (isJsonMime(contentType)) {
return json.deserialize(respBody, returnType);
} else if (returnType.equals(String.class)) {
// Expecting string, return the raw response body.
return (T) respBody;
} else {
throw new ApiException(
"Content type \"" + contentType + "\" is not supported for type: " + returnType,
response.code(),
response.headers().toMultimap(),
respBody);
}
}
/**
* @param annotationType The annotation type.
* @param validators List of constraint validator classes (for a given constraint).
* @param <A> the type of the annotation
* @return Return a Map<Class, Class<? extends ConstraintValidator>> where the map key
* is the type the validator accepts and value the validator class itself.
*/
public static <A extends Annotation>
Map<Type, Class<? extends ConstraintValidator<A, ?>>> getValidatorsTypes(
Class<A> annotationType, List<Class<? extends ConstraintValidator<A, ?>>> validators) {
Map<Type, Class<? extends ConstraintValidator<A, ?>>> validatorsTypes = newHashMap();
for (Class<? extends ConstraintValidator<A, ?>> validator : validators) {
Type type = extractType(validator);
if (validatorsTypes.containsKey(type)) {
throw log.getMultipleValidatorsForSameTypeException(
annotationType.getName(), type.toString());
}
validatorsTypes.put(type, validator);
}
return validatorsTypes;
}
private static AssertionError buildUnexpectedTypeError(Type token, Class<?>... expected) {
// Build exception message
StringBuilder exceptionMessage = new StringBuilder("Unexpected type. Expected one of: ");
for (Class<?> clazz : expected) {
exceptionMessage.append(clazz.getName()).append(", ");
}
exceptionMessage
.append("but got: ")
.append(token.getClass().getName())
.append(", for type token: ")
.append(token.toString())
.append('.');
return new AssertionError(exceptionMessage.toString());
}
/** Try to find the best matching service */
@Override
@SuppressWarnings("unchecked")
public FinderCrudService<?, Informer<?>> get(Type type) {
if (type instanceof Class) {
return get((Class) type);
} else if (type instanceof ParameterizedType) {
ParameterizedType pType = (ParameterizedType) type;
Type raw = pType.getRawType();
if (raw instanceof Class) {
Class rawClass = (Class) raw;
if (Collection.class.isAssignableFrom(rawClass)) {
return get(pType.getActualTypeArguments()[0]);
}
}
}
throw new NoSuchServiceException(
"class " + type.toString() + " appears as not managed by a service of this repository");
}
/** 将Map<String,Object>转换为实体类(测试一次通过,待继续测试） */
public static <T> T castEntity(Class<T> c, Map<String, Object> map) throws Exception {
T t = c.newInstance();
Field[] field = c.getDeclaredFields();
for (Field f : field) {
Type type = f.getType();
String fieldname = f.getName();
for (String key : map.keySet()) {
if (fieldname.toLowerCase().equals(key.toLowerCase())) {
Method m = t.getClass().getDeclaredMethod("set" + initcap(fieldname), (Class<?>) type);
if (m != null) {
if ("class java.lang.String".equals(type.toString())) {
m.invoke(t, map.get(key).toString());
} else {
m.invoke(t, map.get(key));
}
}
break;
}
}
}
return t;
}
/** Checks all fields in test class for compliance with the API xml. */
@SuppressWarnings("unchecked")
private void checkFieldsCompliance() {
for (JDiffField field : jDiffFields) {
try {
Field f = findMatchingField(field);
if (f == null) {
mResultObserver.notifyFailure(
SignatureTestActivity.FAILURE_TYPE.MISSING_FIELD,
field.toReadableString(mAbsoluteClassName),
"No field with correct signature found:" + field.toSignatureString());
} else if (f.getModifiers() != field.mModifier) {
mResultObserver.notifyFailure(
SignatureTestActivity.FAILURE_TYPE.MISMATCH_FIELD,
field.toReadableString(mAbsoluteClassName),
"Non-compatible field modifiers found when looking for " + field.toSignatureString());
} else if (!f.getType().getCanonicalName().equals(field.mFieldType)) {
// type name does not match, but this might be a generic
String genericTypeName = null;
Type type = f.getGenericType();
if (type != null) {
genericTypeName = type instanceof Class ? ((Class) type).getName() : type.toString();
}
if (genericTypeName == null || !genericTypeName.equals(field.mFieldType)) {
mResultObserver.notifyFailure(
SignatureTestActivity.FAILURE_TYPE.MISMATCH_FIELD,
field.toReadableString(mAbsoluteClassName),
"Non-compatible field type found when looking for " + field.toSignatureString());
}
}
} catch (Exception e) {
SignatureTestLog.e("Got exception when checking field compliance", e);
mResultObserver.notifyFailure(
SignatureTestActivity.FAILURE_TYPE.CAUGHT_EXCEPTION,
field.toReadableString(mAbsoluteClassName),
"Exception!");
}
}
}
private Class<?> findConcreteType(
Type generic, Class<?> resource, Map<String, Type> parametersMap)
throws ClassNotFoundException {
for (Type superInterface : resource.getGenericInterfaces()) {
if (superInterface instanceof ParameterizedType) {
ParameterizedType p = (ParameterizedType) superInterface;
Class<?> clazz =
Class.forName(
p.getRawType()
.toString()
.substring(p.getRawType().toString().lastIndexOf(' ') + 1));
Map<String, Type> map = new HashMap<>();
for (int i = 0; i < p.getActualTypeArguments().length; i++) {
if (!map.containsKey(clazz.getTypeParameters()[i].toString())) {
map.put(clazz.getTypeParameters()[i].toString(), p.getActualTypeArguments()[i]);
}
}
if (map.containsKey(generic.toString())) {
String type = map.get(generic.toString()).toString();
try {
Class<?> returnClass = Class.forName(type.substring(type.lastIndexOf(' ') + 1));
return returnClass;
} catch (ClassNotFoundException e) {
break;
}
}
}
}
if (parametersMap.containsKey(generic.toString())) {
try {
Type type = parametersMap.get(generic.toString());
Class<?> returnClass =
Class.forName(type.toString().substring(type.toString().indexOf(' ') + 1));
return returnClass;
} catch (ClassNotFoundException e) {
return null;
}
} else {
return null;
}
}
/**
* オブジェクトのメソッドを呼び出す
*
* @param Object o メソッドを呼び出したいオブジェクト
* @param String methodName 呼び出したいメソッドの名前
* @param Object... args メソッドのパラメータ
* @throws NoSuchMethodException
*/
public static Object invoke(Object o, String methodName, Object... args)
throws SecurityException, ClassNotFoundException, NoSuchMethodException {
StringBuffer tempMessage = new StringBuffer();
Method method = null;
// //argsArray:メソッドの引数の型配列
// Class<?>[] argsArray = new Class<?>[args.length];
// for(int i = 0; i < args.length; i++){
// argsArray[i] = getClassObject(args[i]);
// //スーパークラスを引数にとれるように修正
// }
// try {
// method = o.getClass().getMethod(methodName, argsArray);
// } catch (NoSuchMethodException e) {
// try{
// method = o.getClass().getDeclaredMethod(methodName, argsArray);
// }catch (NoSuchMethodException e2) {
// message = "NoSuchMethodException\r\n";
// display.append(message);
// }
// }
/////////////////////////////////////////
// argsArray:メソッドの引数の型配列
Class<?>[] argsArray = new Class<?>[args.length];
for (int i = 0; i < args.length; i++) {
argsArray[i] = getClassObject(args[i]);
}
method = getMethod(o, args, methodName, argsArray);
////////////////////////////////////////
tempMessage.append("method: " + method.getName() + " is called.\r\n");
if (Modifier.isPrivate(method.getModifiers())) {
method.setAccessible(true);
}
if (o.equals(null)) {
if (Modifier.isStatic(method.getModifiers()) == false) {
throw new NoSuchMethodException();
}
}
try {
Type returnType = method.getGenericReturnType();
tempMessage.append("return type: " + returnType.toString() + "\r\n");
if (returnType.equals(Void.TYPE)) {
tempMessage.append("return value: " + "なし\r\n");
} else {
tempMessage.append("return value: " + method.invoke(o, args).toString() + "\r\n");
}
message = tempMessage.toString();
display.append(message);
return method.invoke(o, args);
} catch (IllegalArgumentException e) {
e.printStackTrace();
message = tempMessage.append("IllegalArgumentException\r\n").toString();
display.append(message);
} catch (IllegalAccessException e) {
e.printStackTrace();
message = tempMessage.append("IllegalAccessException\r\n").toString();
display.append(message);
} catch (InvocationTargetException e) {
e.printStackTrace();
tempMessage.append("InvocationTargetException\r\n");
message = tempMessage.append(e.getCause().toString() + "\r\n").toString();
display.append(message);
}
return null;
}
/**
* Returns a string representation of this object.
*
* @return a string representation of this object.
*/
@Override
public String toString() {
return type instanceof Class<?> ? ((Class<?>) type).getName() : type.toString();
}
public static String typeToString(Type type) {
return type instanceof Class ? ((Class<?>) type).getName() : type.toString();
}
/**
* Create an Aegis type from a reflected type description. This will only work for the restricted
* set of collection types supported by Aegis.
*
* @param t the reflected type.
* @return the type
*/
public AegisType createType(Type t) {
TypeClassInfo info = new TypeClassInfo();
info.setType(t);
info.setDescription("reflected type " + t.toString());
return createTypeForClass(info);
}
/** For debugging use only. */
@Override
public String toString() {
return domainObject.toString() + " => " + requestedType.toString();
}
