Java AnnotatedElement類代碼示例

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
/**
 * Get display name of specified element from name parameter of {@link Editable} annotation. 
 * If the annotation is not defined or name parameter is not available in the annotation, the 
 * element name itself will be transferred to non-camel case and returned.
 *
 * @param element
 * 			annotated element to get name from
 * @return
 * 			display name of the element
 */
public static String getName(AnnotatedElement element) {
	Editable editable = element.getAnnotation(Editable.class);
	if (editable != null && editable.name().trim().length() != 0)
		return editable.name();
	else if (element instanceof Class)
		return WordUtils.uncamel(((Class<?>)element).getSimpleName());
	else if (element instanceof Field) 
		return WordUtils.uncamel(WordUtils.capitalize(((Field)element).getName()));
	else if (element instanceof Method)
		return StringUtils.substringAfter(WordUtils.uncamel(((Method)element).getName()), " ");
	else if (element instanceof Package) 
		return ((Package)element).getName();
	else
		throw new GeneralException("Invalid element type: " + element.getClass().getName());
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
private static <M extends Member & AnnotatedElement> void addInjectorsForMembers(
        TypeLiteral<?> typeLiteral, Factory<M> factory, boolean statics,
        Collection<InjectionPoint> injectionPoints, Errors errors) {
    for (M member : factory.getMembers(getRawType(typeLiteral.getType()))) {
        if (isStatic(member) != statics) {
            continue;
        }

        Inject inject = member.getAnnotation(Inject.class);
        if (inject == null) {
            continue;
        }

        try {
            injectionPoints.add(factory.create(typeLiteral, member, errors));
        } catch (ConfigurationException ignorable) {
            if (!inject.optional()) {
                errors.merge(ignorable.getErrorMessages());
            }
        }
    }
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
private static String getNameFromMemberAnnotation(final AnnotatedElement field) {
    final String result;
    if (field.isAnnotationPresent(Attribute.class)) {
        result = Utils.name(field.getAnnotation(Attribute.class).name(), field);
    } else if (field.isAnnotationPresent(Element.class)) {
        result = Utils.name(field.getAnnotation(Element.class).name(), field);
    } else if (field.isAnnotationPresent(ElementList.class)) {
        result = Utils.name(field.getAnnotation(ElementList.class).name(), field);
    } else if (field.isAnnotationPresent(ElementMap.class)) {
        result = Utils.name(field.getAnnotation(ElementMap.class).name(), field);
    } else if (field.isAnnotationPresent(Text.class)) {
        result = "**text**";
    } else {
        result = null;
    }
    return result;
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
/**
 * Find all the tester annotations declared on a tester class or method.
 * @param classOrMethod a class or method whose tester annotations to find
 * @return an iterable sequence of tester annotations on the class
 */
public static Iterable<Annotation> getTesterAnnotations(AnnotatedElement classOrMethod) {
  synchronized (annotationCache) {
    List<Annotation> annotations = annotationCache.get(classOrMethod);
    if (annotations == null) {
      annotations = new ArrayList<Annotation>();
      for (Annotation a : classOrMethod.getDeclaredAnnotations()) {
        if (a.annotationType().isAnnotationPresent(TesterAnnotation.class)) {
          annotations.add(a);
        }
      }
      annotations = Collections.unmodifiableList(annotations);
      annotationCache.put(classOrMethod, annotations);
    }
    return annotations;
  }
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
private SourceId getSourceId(AnnotatedElement element) {
	SourceId sourceId = null;
	Optional<Annotation> sourceAnnotation = Stream.of(element.getAnnotations())
			.filter(a -> a.annotationType().isAnnotationPresent(RegisteredSourceIdProducer.class)).findFirst();

	if (sourceAnnotation.isPresent()) {
		RegisteredSourceIdProducer sourceIdProviderAnnotation = sourceAnnotation.get().annotationType()
				.getAnnotation(RegisteredSourceIdProducer.class);
		try {
			SourceIdProducer sourceIdProducer = sourceIdProviderAnnotation.value().newInstance();
			sourceId = sourceIdProducer.get(element, sourceAnnotation.get());
		} catch (Exception e) {
			throw new QueryProxyException("Problem with sourceId aquiring: can't find suitable constructor " + e,
					e);
		}
	}
	return sourceId;
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
private Map<String, String> getReferenceColumnNamesMapForReferenceAttribute(SingularAttribute<?, ?> attribute, ManagedType<?> targetEntity) {
	List<String> idAttributeNames = targetEntity.getSingularAttributes().stream()
               .filter(this::isIdAttribute)
               .map(this::getSingularAttributeColumnName)
               .collect(Collectors.toList());

	JoinColumns joinColumnsAnnotation =
               ((AnnotatedElement) attribute.getJavaMember()).getAnnotation(JoinColumns.class);
	JoinColumn joinColumnAnnotation =
               ((AnnotatedElement) attribute.getJavaMember()).getAnnotation(JoinColumn.class);
	JoinColumn[] joinColumns = joinColumnsAnnotation != null ? joinColumnsAnnotation.value() :
               joinColumnAnnotation != null ? new JoinColumn[]{joinColumnAnnotation} : null;
	Map<String, String> referenceColumnNamesMap;
	if (joinColumns != null) {
           referenceColumnNamesMap = Arrays.stream(joinColumns)
                   .collect(Collectors.toMap(JoinColumn::name, joinColumn ->
                           joinColumn.referencedColumnName().length() > 0 ? joinColumn.referencedColumnName() :
                                   idAttributeNames.get(0)));
       } else {
           referenceColumnNamesMap = idAttributeNames.stream()
                   .collect(Collectors.toMap(idAttributeName -> attribute.getName().toUpperCase() + "_"
                           + idAttributeName, idAttributeName -> idAttributeName));
       }
	return referenceColumnNamesMap;
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
public EjbRefElement(Member member, PropertyDescriptor pd) {
	super(member, pd);
	AnnotatedElement ae = (AnnotatedElement) member;
	EJB resource = ae.getAnnotation(EJB.class);
	String resourceBeanName = resource.beanName();
	String resourceName = resource.name();
	this.isDefaultName = !StringUtils.hasLength(resourceName);
	if (this.isDefaultName) {
		resourceName = this.member.getName();
		if (this.member instanceof Method && resourceName.startsWith("set") && resourceName.length() > 3) {
			resourceName = Introspector.decapitalize(resourceName.substring(3));
		}
	}
	Class<?> resourceType = resource.beanInterface();
	if (resourceType != null && !Object.class.equals(resourceType)) {
		checkResourceType(resourceType);
	}
	else {
		// No resource type specified... check field/method.
		resourceType = getResourceType();
	}
	this.beanName = resourceBeanName;
	this.name = resourceName;
	this.lookupType = resourceType;
	this.mappedName = resource.mappedName();
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
/**
 * Utility method for calling an arbitrary method in an annotation.
 *
 * @param element the element that was annotated, either a class or method
 * @param annotation the class of the annotation we're interested in
 * @param methodName the name of the method in the annotation we wish
 * to call.
 * @param defaultValue the value to return if the annotation doesn't
 * exist, or we couldn't invoke the method for some reason.
 * @return the result of calling the annotation method, or the default.
 */
protected static Object getAnnotationValue(
        AnnotatedElement element, Class<? extends Annotation> annotation,
        String methodName, Object defaultValue) {
    Object ret = defaultValue;
    try {
        Method m = annotation.getMethod(methodName);
        Annotation a = element.getAnnotation(annotation);
        ret = m.invoke(a);
    } catch (NoSuchMethodException e) {
        assert false;
    } catch (IllegalAccessException e) {
        assert false;
    } catch (InvocationTargetException e) {
        assert false;
    } catch (NullPointerException e) {
        assert false;
    }
    return ret;
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
/**
 * Find the annotations of given <code>annotationType</code> on given element and stores them in given
 * <code>accumulator</code>.
 * @param accumulator Accumulator
 * @param element Annotated element
 * @param annotationType Annotation type to lookup
 * @param repeatableContainerType Optional repeteable annotation type
 */
private static <A extends Annotation> void findAnnotations(List<A> accumulator, AnnotatedElement element,
		Class<A> annotationType, Class<? extends Annotation> repeatableContainerType) {

	// direct lookup
	A[] as = element.getAnnotationsByType(annotationType);
	if (as.length > 0) {
		for (A a : as) {
			accumulator.add(a);
		}
	}

	// check meta-annotations
	Annotation[] all = element.getAnnotations();
	if (all.length > 0) {
		for (Annotation annotation : all) {
			if (!isInJavaLangAnnotationPackage(annotation) && !annotation.annotationType().equals(annotationType)
					&& (repeatableContainerType == null
							|| !annotation.annotationType().equals(repeatableContainerType))) {
				findAnnotations(accumulator, annotation.annotationType(), annotationType, repeatableContainerType);
			}
		}
	}

}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
public Annotations(AnnotatedElement... elements) {
    for (AnnotatedElement element : elements) {
        for (Annotation annotation : element.getAnnotations()) {
            annotations.put(annotation.annotationType(), annotation);
        }
    }
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
public static AnnotatedElement getAnnotatedElement(Class<?> beanClass, String propertyName, Class<?> propertyClass) {
    Field field = getFieldOrNull(beanClass, propertyName);
    Method method = getGetterOrNull(beanClass, propertyName, propertyClass);
    if (field == null || field.getAnnotations().length == 0) {
        return (method != null && method.getAnnotations().length > 0) ? method : method;
    } else if (method == null || method.getAnnotations().length == 0) {
        return field;
    } else {
        //return new Annotations(field, method);
        return null;
    }
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
private Tracked resolveAnnotation(InvocationContext context) {
    Function<AnnotatedElement, Tracked> extractor = c -> c.getAnnotation(Tracked.class);
    Method method = context.getMethod();

    Tracked tracked = extractor.apply(method);
    return tracked != null ? tracked : extractor.apply(method.getDeclaringClass());
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
/**
 * Get all the annotations of given <code>annotationType</code> present in given <code>element</code>, including any
 * meta-annotation and supporting repeatable annotations.
 * @param <A> Annotation type
 * @param element Annotated element to inspect (not null)
 * @param annotationType Annotation type to lookup
 * @return List of detected annotation of given <code>annotationType</code>, an empty List if none found
 */
public static <A extends Annotation> List<A> getAnnotations(AnnotatedElement element, Class<A> annotationType) {
	ObjectUtils.argumentNotNull(element, "AnnotatedElement must be not null");
	ObjectUtils.argumentNotNull(annotationType, "Annotation type must be not null");

	Class<? extends Annotation> repeatableContainerType = null;
	if (annotationType.isAnnotationPresent(Repeatable.class)) {
		repeatableContainerType = annotationType.getAnnotation(Repeatable.class).value();
	}

	List<A> annotations = new LinkedList<>();
	findAnnotations(annotations, element, annotationType, repeatableContainerType);
	return annotations;
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
@Override
Object createFor(AnnotatedElement annotatedElement, Class<?> targetType, Fairy fairy) {
  IntegerWith config = findAnnotation(annotatedElement, IntegerWith.class).orElse(null);
  int min = minValue(config);
  int max = maxValue(config);

  BaseProducer producer = fairy.baseProducer();
  return producer.randomBetween(min, max);
}
 

import java.lang.reflect.AnnotatedElement; //導入依賴的package包/類
private List<QueryConverter> getConverters(AnnotatedElement element) {
	List<QueryConverter> annotatedConverters = new ArrayList<>(2);
	List<Annotation> converterAnnotations = Stream.of(element.getAnnotations())
			.filter(a -> a.annotationType().isAnnotationPresent(Converter.class)
					|| converters.containsKey(a.annotationType()))
			.collect(Collectors.toList());
	if (!converterAnnotations.isEmpty()) {
		for (Annotation converterAnnotation : converterAnnotations) {
			QueryConverterFactory factory;
			if (converters.containsKey(converterAnnotation.annotationType())) {
				factory = converters.get(converterAnnotation.annotationType());
			} else {
				Converter converter = converterAnnotation.annotationType().getAnnotation(Converter.class);
				Class<? extends QueryConverterFactory> converterFactoryClass = converter.value();
				if (Converter.DEFAULT.class.isAssignableFrom(converterFactoryClass)) {
					throw new QueryProxyException("Factory is not registered for annotation "
							+ converterAnnotation.annotationType().getName() + "! "
							+ "Set static converter using @Converter annotation value or use Queries.Builder.converter() method to register factory instance!");
				}
				try {
					factory = converterFactoryClass.newInstance();
				} catch (Exception e) {
					throw new QueryProxyException(
							"Problem instantiating query converter factory class with no argument constructor " + e,
							e);
				}
			}
			annotatedConverters.add(factory.get(converterAnnotation));
		}
	}
	return annotatedConverters;
}