Java BridgeMethodResolver类代码示例

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
private Method getSpecificmethod(ProceedingJoinPoint pjp) {
	MethodSignature methodSignature = (MethodSignature) pjp.getSignature();
	Method method = methodSignature.getMethod();
	// The method may be on an interface, but we need attributes from the
	// target class. If the target class is null, the method will be
	// unchanged.
	Class<?> targetClass = AopProxyUtils.ultimateTargetClass(pjp.getTarget());
	if (targetClass == null && pjp.getTarget() != null) {
		targetClass = pjp.getTarget().getClass();
	}
	Method specificMethod = ClassUtils.getMostSpecificMethod(method, targetClass);
	// If we are dealing with method with generic parameters, find the
	// original method.
	specificMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);
	return specificMethod;
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
/**
 * Create an instance from a bean name, a method, and a {@code BeanFactory}.
 * The method {@link #createWithResolvedBean()} may be used later to
 * re-create the {@code HandlerMethod} with an initialized the bean.
 */
public HandlerMethod(String beanName, BeanFactory beanFactory, Method method) {
	Assert.hasText(beanName, "Bean name is required");
	Assert.notNull(beanFactory, "BeanFactory is required");
	Assert.notNull(method, "Method is required");
	Assert.isTrue(beanFactory.containsBean(beanName),
			"BeanFactory [" + beanFactory + "] does not contain bean [" + beanName + "]");
	this.bean = beanName;
	this.beanFactory = beanFactory;
	this.method = method;
	this.bridgedMethod = BridgeMethodResolver.findBridgedMethod(method);
	this.parameters = initMethodParameters();
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
/**
 * Select handler methods for the given handler type.
 * <p>Callers define handler methods of interest through the {@link MethodFilter} parameter.
 * @param handlerType the handler type to search handler methods on
 * @param handlerMethodFilter a {@link MethodFilter} to help recognize handler methods of interest
 * @return the selected methods, or an empty set
 */
public static Set<Method> selectMethods(final Class<?> handlerType, final MethodFilter handlerMethodFilter) {
	final Set<Method> handlerMethods = new LinkedHashSet<Method>();
	Set<Class<?>> handlerTypes = new LinkedHashSet<Class<?>>();
	Class<?> specificHandlerType = null;
	if (!Proxy.isProxyClass(handlerType)) {
		handlerTypes.add(handlerType);
		specificHandlerType = handlerType;
	}
	handlerTypes.addAll(Arrays.asList(handlerType.getInterfaces()));
	for (Class<?> currentHandlerType : handlerTypes) {
		final Class<?> targetClass = (specificHandlerType != null ? specificHandlerType : currentHandlerType);
		ReflectionUtils.doWithMethods(currentHandlerType, new ReflectionUtils.MethodCallback() {
			@Override
			public void doWith(Method method) {
				Method specificMethod = ClassUtils.getMostSpecificMethod(method, targetClass);
				Method bridgedMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);
				if (handlerMethodFilter.matches(specificMethod) &&
						(bridgedMethod == specificMethod || !handlerMethodFilter.matches(bridgedMethod))) {
					handlerMethods.add(specificMethod);
				}
			}
		}, ReflectionUtils.USER_DECLARED_METHODS);
	}
	return handlerMethods;
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
/**
 * Finds methods for the given annotation
 * 
 * It first finds all public member methods of the class or interface represented by objClass, 
 * including those inherited from superclasses and superinterfaces.
 * 
 * It then loops through these methods searching for a single Annotation of annotationType,
 * traversing its super methods if no annotation can be found on the given method itself.
 * 
 * @param objClass - the class
 * @param annotationType - the annotation to find
 * @return - the List of Method or an empty List
 */
@SuppressWarnings("rawtypes")
public static List<Method> findMethodsByAnnotation(Class objClass, Class<? extends Annotation> annotationType)
{

    List<Method> annotatedMethods = new ArrayList<Method>();
    Method[] methods = objClass.getMethods();
    for (Method method : methods)
    {
        Annotation annot = AnnotationUtils.findAnnotation(method, annotationType);
        if (annot != null) {
            //Just to be sure, lets make sure its not a Bridged (Generic) Method
            Method resolvedMethod = BridgeMethodResolver.findBridgedMethod(method);
            annotatedMethods.add(resolvedMethod);
        }
    }
    
    return annotatedMethods;
    
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
private JCacheOperation<?> computeCacheOperation(Method method, Class<?> targetClass) {
	// Don't allow no-public methods as required.
	if (allowPublicMethodsOnly() && !Modifier.isPublic(method.getModifiers())) {
		return null;
	}

	// The method may be on an interface, but we need attributes from the target class.
	// If the target class is null, the method will be unchanged.
	Method specificMethod = ClassUtils.getMostSpecificMethod(method, targetClass);
	// If we are dealing with method with generic parameters, find the original method.
	specificMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);

	// First try is the method in the target class.
	JCacheOperation<?> operation = findCacheOperation(specificMethod, targetClass);
	if (operation != null) {
		return operation;
	}
	if (specificMethod != method) {
		// Fall back is to look at the original method.
		operation = findCacheOperation(method, targetClass);
		if (operation != null) {
			return operation;
		}
	}
	return null;
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
/**
 * Finds out the most specific method when the execution reference is an
 * interface or a method with generic parameters
 * 
 * @param pjp
 * @return
 */
private Method getSpecificmethod(ProceedingJoinPoint pjp) {
	MethodSignature methodSignature = (MethodSignature) pjp.getSignature();
	Method method = methodSignature.getMethod();
	// The method may be on an interface, but we need attributes from the
	// target class. If the target class is null, the method will be
	// unchanged.
	Class<?> targetClass = AopProxyUtils.ultimateTargetClass(pjp.getTarget());
	if (targetClass == null && pjp.getTarget() != null) {
		targetClass = pjp.getTarget().getClass();
	}
	Method specificMethod = ClassUtils.getMostSpecificMethod(method, targetClass);
	// If we are dealing with method with generic parameters, find the
	// original method.
	specificMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);
	return specificMethod;
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
/**
 * Select handler methods for the given handler type.
 * <p>Callers define handler methods of interest through the {@link MethodFilter} parameter.
 * @param handlerType the handler type to search handler methods on
 * @param handlerMethodFilter a {@link MethodFilter} to help recognize handler methods of interest
 * @return the selected methods, or an empty set
 */
public static Set<Method> selectMethods(final Class<?> handlerType, final MethodFilter handlerMethodFilter) {
	final Set<Method> handlerMethods = new LinkedHashSet<Method>();
	Set<Class<?>> handlerTypes = new LinkedHashSet<Class<?>>();
	Class<?> specificHandlerType = null;
	if (!Proxy.isProxyClass(handlerType)) {
		handlerTypes.add(handlerType);
		specificHandlerType = handlerType;
	}
	handlerTypes.addAll(Arrays.asList(handlerType.getInterfaces()));
	for (Class<?> currentHandlerType : handlerTypes) {
		final Class<?> targetClass = (specificHandlerType != null ? specificHandlerType : currentHandlerType);
		ReflectionUtils.doWithMethods(currentHandlerType, new ReflectionUtils.MethodCallback() {
			public void doWith(Method method) {
				Method specificMethod = ClassUtils.getMostSpecificMethod(method, targetClass);
				Method bridgedMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);
				if (handlerMethodFilter.matches(specificMethod) &&
						(bridgedMethod == specificMethod || !handlerMethodFilter.matches(bridgedMethod))) {
					handlerMethods.add(specificMethod);
				}
			}
		}, ReflectionUtils.USER_DECLARED_METHODS);
	}
	return handlerMethods;
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
public Object invoke(final MethodInvocation invocation) throws Throwable {
  Class<?> targetClass = invocation.getThis() != null ? invocation.getThis().getClass() : null;

  Method specificMethod = ClassUtils.getMostSpecificMethod(invocation.getMethod(), targetClass);
  // If we are dealing with method with generic parameters, find the original
  // method.
  specificMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);
  AlfrescoTransaction alfrescoTransaction = parseAnnotation(specificMethod);

  if (alfrescoTransaction != null) {
    RetryingTransactionCallback<Object> exampleWork = new RetryingTransactionCallback<Object>() {
      public Object execute() throws Throwable {
        return invocation.proceed();
      }
    };
    boolean readonly = alfrescoTransaction.readOnly();
    Propagation propagation = alfrescoTransaction.propagation();

    boolean requiresNew = Propagation.REQUIRES_NEW.equals(propagation);
    return serviceRegistry.getRetryingTransactionHelper().doInTransaction(exampleWork, readonly, requiresNew);
  } else {
    return invocation.proceed();
  }

}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
private SecurityAttribute computeSecurityAttribute(Method method, Class<?> targetClass)
{
	// The method may be on an interface, but we need attributes from the
	// target class.
	// If the target class is null, the method will be unchanged.
	Method specificMethod = ClassUtils.getMostSpecificMethod(method, targetClass);
	// If we are dealing with method with generic parameters, find the
	// original method.
	if( JdkVersion.isAtLeastJava15() )
	{
		specificMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);
	}

	// First try is the method in the target class.
	SecurityAttribute txAtt = findSecurityAttribute(specificMethod, targetClass);
	if( txAtt != null )
	{
		return txAtt;
	}

	if( !specificMethod.equals(method) )
	{
		// Fallback is to look at the original method.
		txAtt = findSecurityAttribute(method, targetClass);
		if( txAtt != null )
		{
			return txAtt;
		}
	}
	return null;
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
protected void initBinder(Object handler, String attrName, WebDataBinder binder, NativeWebRequest webRequest)
		throws Exception {

	if (this.bindingInitializer != null) {
		this.bindingInitializer.initBinder(binder, webRequest);
	}
	if (handler != null) {
		Set<Method> initBinderMethods = this.methodResolver.getInitBinderMethods();
		if (!initBinderMethods.isEmpty()) {
			boolean debug = logger.isDebugEnabled();
			for (Method initBinderMethod : initBinderMethods) {
				Method methodToInvoke = BridgeMethodResolver.findBridgedMethod(initBinderMethod);
				String[] targetNames = AnnotationUtils.findAnnotation(initBinderMethod, InitBinder.class).value();
				if (targetNames.length == 0 || Arrays.asList(targetNames).contains(attrName)) {
					Object[] initBinderArgs =
							resolveInitBinderArguments(handler, methodToInvoke, binder, webRequest);
					if (debug) {
						logger.debug("Invoking init-binder method: " + methodToInvoke);
					}
					ReflectionUtils.makeAccessible(methodToInvoke);
					Object returnValue = methodToInvoke.invoke(handler, initBinderArgs);
					if (returnValue != null) {
						throw new IllegalStateException(
								"InitBinder methods must not have a return value: " + methodToInvoke);
					}
				}
			}
		}
	}
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
/**
 * Initialize a new HandlerMethodResolver for the specified handler type.
 * @param handlerType the handler class to introspect
 */
public void init(final Class<?> handlerType) {
	Set<Class<?>> handlerTypes = new LinkedHashSet<Class<?>>();
	Class<?> specificHandlerType = null;
	if (!Proxy.isProxyClass(handlerType)) {
		handlerTypes.add(handlerType);
		specificHandlerType = handlerType;
	}
	handlerTypes.addAll(Arrays.asList(handlerType.getInterfaces()));
	for (Class<?> currentHandlerType : handlerTypes) {
		final Class<?> targetClass = (specificHandlerType != null ? specificHandlerType : currentHandlerType);
		ReflectionUtils.doWithMethods(currentHandlerType, new ReflectionUtils.MethodCallback() {
			@Override
			public void doWith(Method method) {
				Method specificMethod = ClassUtils.getMostSpecificMethod(method, targetClass);
				Method bridgedMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);
				if (isHandlerMethod(specificMethod) &&
						(bridgedMethod == specificMethod || !isHandlerMethod(bridgedMethod))) {
					handlerMethods.add(specificMethod);
				}
				else if (isInitBinderMethod(specificMethod) &&
						(bridgedMethod == specificMethod || !isInitBinderMethod(bridgedMethod))) {
					initBinderMethods.add(specificMethod);
				}
				else if (isModelAttributeMethod(specificMethod) &&
						(bridgedMethod == specificMethod || !isModelAttributeMethod(bridgedMethod))) {
					modelAttributeMethods.add(specificMethod);
				}
			}
		}, ReflectionUtils.USER_DECLARED_METHODS);
	}
	this.typeLevelMapping = AnnotationUtils.findAnnotation(handlerType, RequestMapping.class);
	SessionAttributes sessionAttributes = AnnotationUtils.findAnnotation(handlerType, SessionAttributes.class);
	this.sessionAttributesFound = (sessionAttributes != null);
	if (this.sessionAttributesFound) {
		this.sessionAttributeNames.addAll(Arrays.asList(sessionAttributes.value()));
		this.sessionAttributeTypes.addAll(Arrays.asList(sessionAttributes.types()));
	}
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
/**
 * Same signature as {@link #getTransactionAttribute}, but doesn't cache the result.
 * {@link #getTransactionAttribute} is effectively a caching decorator for this method.
 * @see #getTransactionAttribute
 */
private TransactionAttribute computeTransactionAttribute(Method method, Class<?> targetClass) {
	// Don't allow no-public methods as required.
	if (allowPublicMethodsOnly() && !Modifier.isPublic(method.getModifiers())) {
		return null;
	}

	// Ignore CGLIB subclasses - introspect the actual user class.
	Class<?> userClass = ClassUtils.getUserClass(targetClass);
	// The method may be on an interface, but we need attributes from the target class.
	// If the target class is null, the method will be unchanged.
	Method specificMethod = ClassUtils.getMostSpecificMethod(method, userClass);
	// If we are dealing with method with generic parameters, find the original method.
	specificMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);

	// First try is the method in the target class.
	TransactionAttribute txAtt = findTransactionAttribute(specificMethod);
	if (txAtt != null) {
		return txAtt;
	}

	// Second try is the transaction attribute on the target class.
	txAtt = findTransactionAttribute(specificMethod.getDeclaringClass());
	if (txAtt != null) {
		return txAtt;
	}

	if (specificMethod != method) {
		// Fallback is to look at the original method.
		txAtt = findTransactionAttribute(method);
		if (txAtt != null) {
			return txAtt;
		}
		// Last fallback is the class of the original method.
		return findTransactionAttribute(method.getDeclaringClass());
	}
	return null;
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
public GenericTypeAwarePropertyDescriptor(Class<?> beanClass, String propertyName,
		Method readMethod, Method writeMethod, Class<?> propertyEditorClass)
		throws IntrospectionException {

	super(propertyName, null, null);
	this.beanClass = beanClass;
	this.propertyEditorClass = propertyEditorClass;

	Method readMethodToUse = BridgeMethodResolver.findBridgedMethod(readMethod);
	Method writeMethodToUse = BridgeMethodResolver.findBridgedMethod(writeMethod);
	if (writeMethodToUse == null && readMethodToUse != null) {
		// Fallback: Original JavaBeans introspection might not have found matching setter
		// method due to lack of bridge method resolution, in case of the getter using a
		// covariant return type whereas the setter is defined for the concrete property type.
		Method candidate = ClassUtils.getMethodIfAvailable(
				this.beanClass, "set" + StringUtils.capitalize(getName()), (Class<?>[]) null);
		if (candidate != null && candidate.getParameterTypes().length == 1) {
			writeMethodToUse = candidate;
		}
	}
	this.readMethod = readMethodToUse;
	this.writeMethod = writeMethodToUse;

	if (this.writeMethod != null && this.readMethod == null) {
		// Write method not matched against read method: potentially ambiguous through
		// several overloaded variants, in which case an arbitrary winner has been chosen
		// by the JDK's JavaBeans Introspector...
		Set<Method> ambiguousCandidates = new HashSet<Method>();
		for (Method method : beanClass.getMethods()) {
			if (method.getName().equals(writeMethodToUse.getName()) &&
					!method.equals(writeMethodToUse) && !method.isBridge()) {
				ambiguousCandidates.add(method);
			}
		}
		if (!ambiguousCandidates.isEmpty()) {
			this.ambiguousWriteMethods = ambiguousCandidates;
		}
	}
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
private Collection<CacheOperation> computeCacheOperations(Method method, Class<?> targetClass) {
	// Don't allow no-public methods as required.
	if (allowPublicMethodsOnly() && !Modifier.isPublic(method.getModifiers())) {
		return null;
	}

	// The method may be on an interface, but we need attributes from the target class.
	// If the target class is null, the method will be unchanged.
	Method specificMethod = ClassUtils.getMostSpecificMethod(method, targetClass);
	// If we are dealing with method with generic parameters, find the original method.
	specificMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);

	// First try is the method in the target class.
	Collection<CacheOperation> opDef = findCacheOperations(specificMethod);
	if (opDef != null) {
		return opDef;
	}

	// Second try is the caching operation on the target class.
	opDef = findCacheOperations(specificMethod.getDeclaringClass());
	if (opDef != null) {
		return opDef;
	}

	if (specificMethod != method) {
		// Fall back is to look at the original method.
		opDef = findCacheOperations(method);
		if (opDef != null) {
			return opDef;
		}
		// Last fall back is the class of the original method.
		return findCacheOperations(method.getDeclaringClass());
	}
	return null;
}
 

import org.springframework.core.BridgeMethodResolver; //导入依赖的package包/类
/**
 * Determine the expected type as the returned type of the method.
 * If the return type is a List it will return the generic element type instead of a List.
 * @param resource - resource with methods
 * @param method Method
 * @return Class - type of class it needs.
 */
@SuppressWarnings("rawtypes")
protected static Class determineType(Class resource, Method method)
{
    Method resolvedMethod = BridgeMethodResolver.findBridgedMethod(method);

    /*
    * The api is consistent that the object passed in must match the object passed out
    * however, operations are different, if the param is supplied  it doesn't have to match
    * the return type.
    * So we need special logic for operations
     */
    Annotation annot = AnnotationUtils.findAnnotation(resolvedMethod, Operation.class);
    if (annot != null)
    {
        return determineOperationType(resource, method);
    }
    else
    {
        Class returnType = GenericTypeResolver.resolveReturnType(resolvedMethod, resource);
        if (List.class.isAssignableFrom(returnType))
        {
            return GenericCollectionTypeResolver.getCollectionReturnType(method);
        }
        return returnType;
    }
}