org.springframework.util.ReflectionUtils.FieldCallback Java Examples

/**
 * 解析对象为Model
 * 自定义filter
 * @param obj
 * @param parseSuper 是否解析父类
 * @return
 */
public static List<Model> parseByObject(Object obj,boolean parseSuper,FieldFilter ff){
	List<Model> list = new ArrayList<>();
	if (obj==null) {
		return list;
	}
	//解析Field
	FieldCallback fc = new FieldCallback() {
		@Override
		public void doWith(Field field) throws IllegalArgumentException, IllegalAccessException {
			if (ff != null && !ff.matches(field)) {
				return;
			}
			Model m = parseByField(obj, field);
			if (m!=null) {
				list.add(m);
			}
		}
	};
	if (parseSuper) {
		ReflectionUtil.doWithFields(obj.getClass(),fc);
	}else{
		ReflectionUtil.doWithLocalFields(obj.getClass(),fc);
	}
	return list;
}
 

public DynamoDBHashAndRangeKeyExtractingEntityMetadataImpl(final Class<T> domainType) {
	super(domainType);
	this.hashAndRangeKeyMethodExtractor = new DynamoDBHashAndRangeKeyMethodExtractorImpl<T>(getJavaType());
	ReflectionUtils.doWithMethods(domainType, new MethodCallback() {
		public void doWith(Method method) {
			if (method.getAnnotation(DynamoDBHashKey.class) != null) {
				String setterMethodName = toSetterMethodNameFromAccessorMethod(method);
				if (setterMethodName != null) {
					hashKeySetterMethod = ReflectionUtils.findMethod(domainType, setterMethodName, method.getReturnType());
				}
			}
		}
	});
	ReflectionUtils.doWithFields(domainType, new FieldCallback() {
		public void doWith(Field field) {
			if (field.getAnnotation(DynamoDBHashKey.class) != null) {
				
				hashKeyField = ReflectionUtils.findField(domainType, field.getName());
				
			}
		}
	});
	Assert.isTrue(hashKeySetterMethod != null || hashKeyField != null, "Unable to find hash key field or setter method on " + domainType + "!");
	Assert.isTrue(hashKeySetterMethod == null || hashKeyField == null, "Found both hash key field and setter method on " + domainType + "!");

}
 

@Override
public Set<String> getIndexRangeKeyPropertyNames() {
	final Set<String> propertyNames = new HashSet<String>();
	ReflectionUtils.doWithMethods(getJavaType(), new MethodCallback() {
		public void doWith(Method method) {
			if (method.getAnnotation(DynamoDBIndexRangeKey.class) != null) {
				if ((method.getAnnotation(DynamoDBIndexRangeKey.class).localSecondaryIndexName() != null && method
						.getAnnotation(DynamoDBIndexRangeKey.class).localSecondaryIndexName().trim().length() > 0)
						|| (method.getAnnotation(DynamoDBIndexRangeKey.class).localSecondaryIndexNames() != null && method
								.getAnnotation(DynamoDBIndexRangeKey.class).localSecondaryIndexNames().length > 0)) {
					propertyNames.add(getPropertyNameForAccessorMethod(method));
				}
			}
		}
	});
	ReflectionUtils.doWithFields(getJavaType(), new FieldCallback() {
		public void doWith(Field field) {
			if (field.getAnnotation(DynamoDBIndexRangeKey.class) != null) {
				if ((field.getAnnotation(DynamoDBIndexRangeKey.class).localSecondaryIndexName() != null && field
						.getAnnotation(DynamoDBIndexRangeKey.class).localSecondaryIndexName().trim().length() > 0)
						|| (field.getAnnotation(DynamoDBIndexRangeKey.class).localSecondaryIndexNames() != null && field
								.getAnnotation(DynamoDBIndexRangeKey.class).localSecondaryIndexNames().length > 0)) {
					propertyNames.add(getPropertyNameForField(field));
				}
			}
		}
	});
	return propertyNames;
}
 

/**
 * Creates a new {@link FieldAndGetterReflectionEntityInformation} inspecting the
 * given domain class for a getter carrying the given annotation.
 * 
 * @param domainClass
 *            must not be {@literal null}.
 * @param annotation
 *            must not be {@literal null}.
 */
public FieldAndGetterReflectionEntityInformation(Class<T> domainClass, final Class<? extends Annotation> annotation) {

	super(domainClass);
	Assert.notNull(annotation);

	ReflectionUtils.doWithMethods(domainClass, new MethodCallback() {
		public void doWith(Method method) {
			if (method.getAnnotation(annotation) != null) {
				FieldAndGetterReflectionEntityInformation.this.method = method;
				return;
			}
		}
	});
	
	if (method == null)
	{
		ReflectionUtils.doWithFields(domainClass, new FieldCallback() {
			public void doWith(Field field) {
				if (field.getAnnotation(annotation) != null) {
					FieldAndGetterReflectionEntityInformation.this.field = field;
					return;
				}
			}
		});
	}

	Assert.isTrue(this.method != null || this.field != null, String.format("No field or method annotated with %s found!", annotation.toString()));
	Assert.isTrue(this.method == null || this.field == null, String.format("Both field and method annotated with %s found!", annotation.toString()));

	if (method != null)
	{
		ReflectionUtils.makeAccessible(method);
	}
}
 

/**
 * Find annotated elements on types
 * @param ann annotation to search
 * @param clazz class to search on.
 * @return List with annotated elements
 */
public static List<AnnotatedElement> findAnnotatedElements(final Class<? extends Annotation> annotationType, Class<?> clazz) {
	final ArrayList<AnnotatedElement> elements = new ArrayList<AnnotatedElement>();
	// Lookup fields
	ReflectionUtils.doWithFields(clazz, new FieldCallback() {
		
		@Override
		public void doWith(Field field) throws IllegalArgumentException,
				IllegalAccessException {
			if (field.getAnnotation(annotationType) != null) {
				elements.add(field);
			}
			
		}
	});
	// Lookup methods
	ReflectionUtils.doWithMethods(clazz, new MethodCallback() {
		
		@Override
		public void doWith(Method method) throws IllegalArgumentException,
				IllegalAccessException {
			
			if (org.springframework.core.annotation.AnnotationUtils.getAnnotation(method, annotationType) != null)
				elements.add(method);
		}
	});
	
	return elements;
}
 

protected void scanDataAccessAnnotation(Object bean, String beanName) {
    Class<?> managedBeanClass = bean.getClass();
    FieldCallback fcb = new DataAccessFieldCallback(configurableListableBeanFactory, bean);
    ReflectionUtils.doWithFields(managedBeanClass, fcb);
}