Java Code Examples for java.lang.reflect.Method#getParameterAnnotations()

public static List<Binding> parseBindings(Method method) {
    // 从 parameter 里解析出来 binding
    List<Binding> bindings = new ArrayList<Binding>();
    Annotation[][] parameterAnnotations = method.getParameterAnnotations();
    for (int parameterIndex = 0; parameterIndex < parameterAnnotations.length; ++parameterIndex) {
        Annotation[] annotationsOnParameter = parameterAnnotations[parameterIndex];
        for (int j = 0; j < annotationsOnParameter.length; ++j) {

            Annotation[] annotationsOnBinding = annotationsOnParameter[j].annotationType().getAnnotations();
            for (Annotation annotationOnBinding : annotationsOnBinding) {
                if (BindingParserHandler.class.isAssignableFrom(annotationOnBinding.annotationType())) {
                    BindingParserHandler bindingParserHandler = (BindingParserHandler) annotationOnBinding;
                    BindingParser bindingParser = InstanceUtils.newInstance(bindingParserHandler.parser());
                    Binding binding = bindingParser.parse(annotationsOnParameter[j]);
                    bindings.add(binding);
                }
            }
        }
    }
    return bindings;
}
 

public static List<AggregateNativeContainerType> parseSignatureArgumentsTypes(Method inputFunction)
{
    ImmutableList.Builder<AggregateNativeContainerType> builder = ImmutableList.builder();

    for (int i = 0; i < inputFunction.getParameterCount(); i++) {
        Class<?> parameterType = inputFunction.getParameterTypes()[i];
        Annotation[] annotations = inputFunction.getParameterAnnotations()[i];

        // Skip injected parameters
        if (parameterType == ConnectorSession.class) {
            continue;
        }

        if (containsAnnotation(annotations, Parser::isAggregationMetaAnnotation)) {
            continue;
        }

        builder.add(new AggregateNativeContainerType(inputFunction.getParameterTypes()[i], isParameterBlock(annotations)));
    }

    return builder.build();
}
 

public Annotation[][] getParameterAnnotations(final Method m) {
    Merger<Annotation[][]> merger = new Merger<Annotation[][]>(reader(m.getDeclaringClass())) {
        Annotation[][] reflection() {
            return ExternalMetadataReader.super.getParameterAnnotations(m);
        }

        Annotation[][] external() {
            JavaMethod jm = getJavaMethod(m, reader);
            Annotation[][] a = m.getParameterAnnotations();
            for (int i = 0; i < m.getParameterTypes().length; i++) {
                if (jm == null) continue;
                JavaParam jp = jm.getJavaParams().getJavaParam().get(i);
                a[i] = getAnnotations(jp.getParamAnnotation());
            }
            return a;
        }
    };
    return merger.merge();
}
 

public Annotation[][] getParameterAnnotations(final Method m) {
    Merger<Annotation[][]> merger = new Merger<Annotation[][]>(reader(m.getDeclaringClass())) {
        Annotation[][] reflection() {
            return ExternalMetadataReader.super.getParameterAnnotations(m);
        }

        Annotation[][] external() {
            JavaMethod jm = getJavaMethod(m, reader);
            Annotation[][] a = m.getParameterAnnotations();
            for (int i = 0; i < m.getParameterTypes().length; i++) {
                if (jm == null) continue;
                JavaParam jp = jm.getJavaParams().getJavaParam().get(i);
                a[i] = getAnnotations(jp.getParamAnnotation());
            }
            return a;
        }
    };
    return merger.merge();
}
 

public ChainLockableStrategy(Method method) {
    this.configurations = new Int2BooleanOpenHashMap();
    Annotation[][] annotations = method.getParameterAnnotations();
    for (int index = 0; index < annotations.length; index++) {
        for (Annotation annotation : annotations[index]) {
            if (annotation instanceof LockableParameter) {
                this.configurations.put(index, true);
                break;
            }
            if (annotation instanceof LockableElement) {
                // TODO 是否要检查参数的类型为数组/集合/映射
                this.configurations.put(index, false);
                break;
            }
        }
    }
}
 

public boolean hasStartNanosAnnotation(Method method, int parameterIndex) {
    Annotation[][] parametersAnnotations = method.getParameterAnnotations();
    Annotation[] parameterAnnotations = parametersAnnotations[parameterIndex];
    for (Annotation annotation : parameterAnnotations) {
        if ((annotation instanceof StartNanos)) {
            return true;
        }
    }
    return false;
}
 

/** Derives the name of the {@code i}th parameter of a method. */
public static String getParameterName(Method method, int i) {
  for (Annotation annotation : method.getParameterAnnotations()[i]) {
    if (annotation.annotationType() == Parameter.class) {
      return ((Parameter) annotation).name();
    }
  }
  return method.getParameters()[i].getName();
}
 

void test1() throws Throwable {
    for (Method m : thisClass.getMethods()) {
        if (m.getName().equals("nop")) {
            Annotation[][] ann = m.getParameterAnnotations();
            equal(ann.length, 2);
            Annotation foo = ann[0][0];
            Annotation bar = ann[1][0];
            equal(foo.toString(), "@Named(value=foo)");
            equal(bar.toString(), "@Named(value=bar)");
            check(foo.equals(foo));
            check(! foo.equals(bar));
        }
    }
}
 

@Test
public void testHeaderFromAnotherMessage3() throws Exception {
    env.put(ToolConstants.CFG_WSDLURL, getLocation("/wsdl2java_wsdl/pizza.wsdl"));
    env.put(ToolConstants.CFG_EXTRA_SOAPHEADER, "FALSE");
    env.remove(ToolConstants.CFG_VALIDATE_WSDL);
    processor.setContext(env);
    processor.execute();

    assertNotNull(output);

    Class<?> clz = classLoader.loadClass("com.mypizzaco.pizza.PizzaPortType");

    Method[] meths = clz.getMethods();
    for (Method m : meths) {
        if ("orderPizzaBroken".equals(m.getName())) {
            Annotation[][] annotations = m.getParameterAnnotations();
            assertEquals(1, annotations.length);
            for (int i = 0; i < 1; i++) {
                assertTrue(annotations[i][0] instanceof WebParam);
                WebParam parm = (WebParam)annotations[i][0];
                if ("OrderPizza".equals(parm.name())) {
                    assertEquals("http://mypizzaco.com/pizza/types", parm.targetNamespace());
                    assertEquals("OrderPizza", parm.name());
                    assertFalse(parm.header());
                } else if ("CallerIDHeader".equals(parm.name())) {
                    fail("If the exsh turned off, should not generate this parameter");
                } else {
                    fail("No WebParam found!");
                }
            }
        }
    }
}
 

@Test public void When_Call_Legal_Or_Illegal_With_Custom_Object_Return_Null()
    throws NoSuchMethodException {
  Method method = Providers.class.getDeclaredMethod("checkCustomObject", Model.class);

  Optional annotation = (Optional) method.getParameterAnnotations()[0][0];
  Type type = method.getGenericParameterTypes()[0];
  Metadata<Optional> metadata = new Metadata<>(Providers.class,
      method, null, annotation, type);
  assertNull(optionalMockery.illegal(metadata));
  assertNull(optionalMockery.legal(metadata));
}
 

private String getCacheKey(final String template, final Method method, final Object[] args)
    throws FrameworkException {
    if (StringUtils.isEmpty(template) && CommonUtil.isEmpty(args)) {
        throw new ServiceException(ErrorCodeDef.CACHE_ERROR_10002);
    }
    String key;
    if (StringUtils.isNotEmpty(template)) {
        Annotation[][] parameterAnnotations = method.getParameterAnnotations();
        Map<String, Object> paramMap = new HashMap<String, Object>();
        for (int i = 0; i < parameterAnnotations.length; i++) {
            for (Annotation annotation : parameterAnnotations[i]) {
                if (annotation instanceof Key) {
                    paramMap.put(((Key) annotation).value(), args[i]);
                    break;
                }
            }
        }
        key = VelocityParseFactory.parse(CommonUtil.getTransactionID(), template, paramMap);
        Assert.isFalse(key.contains(GlobalConstants.DOLLAR_BRACE), ErrorCodeDef.CACHE_ERROR_10002);
    }
    else {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < args.length; i++) {
            if (i > 0) {
                sb.append(GlobalConstants.UNDERLINE);
            }
            sb.append(args[i] == null ? GlobalConstants.BLANK : args[i]);
        }
        key = sb.toString();
    }
    return key;
}
 

public static List<Parameter> getParameters(Method resourceMethod) {
    Annotation[][] paramAnns = resourceMethod.getParameterAnnotations();
    if (paramAnns.length == 0) {
        return CastUtils.cast(Collections.emptyList(), Parameter.class);
    }
    Class<?>[] types = resourceMethod.getParameterTypes();
    List<Parameter> params = new ArrayList<>(paramAnns.length);
    for (int i = 0; i < paramAnns.length; i++) {
        Parameter p = getParameter(i, paramAnns[i], types[i]);
        params.add(p);
    }
    return params;
}
 

@Test
public void shouldReturnArgumentToString()
		throws NoSuchMethodException, SecurityException {
	Method method = AnnotationMockClass.class
			.getMethod("getAnnotationForArgumentToString", Long.class);
	Annotation annotation = method.getParameterAnnotations()[0][0];
	if (annotation instanceof SpanTag) {
		String resolvedValue = this.handler.resolveTagValue((SpanTag) annotation, 15);
		assertThat(resolvedValue).isEqualTo("15");
	}
	else {
		fail("Annotation was not SleuthSpanTag");
	}
}
 

private static boolean hasConstraintParameter(Method method) {
    Annotation[][] parameterAnnotations = method.getParameterAnnotations();
    if (parameterAnnotations != null && parameterAnnotations.length > 0) {
        for (Annotation[] annotations : parameterAnnotations) {
            for (Annotation annotation : annotations) {
                if (annotation.annotationType().isAnnotationPresent(Constraint.class)) {
                    return true;
                }
            }
        }
    }
    return false;
}
 

@Test
public void testSupportAndResolve() throws NoSuchMethodException {
    Method method = MappingsController.class.getMethod("handleSession", Map.class);
    MethodParameter methodParameter = new MethodParameter(
            method,
            0,
            Map.class,
            method.getParameterAnnotations()[0]
    );

    RequestEnvelope envelope = Utils.buildSimpleEnvelope("intent");
    ArgumentResolverContext input = new ArgumentResolverContext(mockSkillContext, methodParameter, HandlerInput.builder().withRequestEnvelope(envelope).build());

    assertSame(envelope.getSession().getAttributes(), resolver.resolve(input).get());
}
 

private String generateActionDefinition( String actionName,
                                         Method actionImplementation,
                                         String transferUnit,
                                         boolean registerAction ) {

    log.info("Generating method implementation for action '" + actionName + "'");

    String[] paramNames = new String[actionImplementation.getParameterTypes().length];
    String[] paramTypes = new String[actionImplementation.getParameterTypes().length];

    Annotation[][] parameterAnnotations = actionImplementation.getParameterAnnotations();
    for (int i = 0; i < parameterAnnotations.length; i++) {
        Class<?> paramType = actionImplementation.getParameterTypes()[i];

        Annotation[] currentParamAnnotations = parameterAnnotations[i];

        Parameter paramAnnotation = null;
        for (int j = 0; j < currentParamAnnotations.length; j++) {
            if (currentParamAnnotations[j] instanceof Parameter) {
                paramAnnotation = (Parameter) currentParamAnnotations[j];
                break;
            }
        }

        if (paramAnnotation == null) {
            throw new BuildException("No @Parameter annotation for one of the parameters of action method "
                                     + actionImplementation.toString());
        }

        paramNames[i] = paramAnnotation.name();

        if (paramType.isArray() && paramType.getComponentType().isEnum()) {
            //array of enums should be represented by array of String in the generated stub
            paramTypes[i] = "String[]";
        } else if (paramType.isEnum()) {
            //enums should be represented by Strings in the generated stub
            paramTypes[i] = "String";
        } else {
            paramTypes[i] = paramType.getSimpleName();
        }
    }

    //parameters and arguments
    if (paramNames.length != paramTypes.length) {
        throw new BuildException("Parameter names count different than parameter types count for action method "
                                 + actionImplementation.toString());
    }

    Annotation deprecatedAnnotation = actionImplementation.getAnnotation(Deprecated.class);
    boolean isDeprecated = (deprecatedAnnotation != null);

    try {
        return new MethodTemplateProcessor(actionImplementation, actionName, paramNames, registerAction,
                                           paramTypes, transferUnit, isDeprecated).processTemplate();
    } catch (IOException ioe) {
        throw new BuildException(ioe);
    }
}
 

private static Annotation[] getFirstMethodArgumentAnnotations(String methodName) throws NoSuchMethodException {
	Method method = Testable.class.getDeclaredMethod(methodName, String.class);
	assertThat(method.getParameterAnnotations().length, is(1));
	return method.getParameterAnnotations()[0];
}
 

/**
 * Create list of {@link Parameter} .
 *
 * @param resourceClass
 *         class
 * @param method
 *         See {@link java.lang.reflect.Method}
 * @return list of {@link Parameter}
 */
private List<Parameter> createMethodParameters(Class<?> resourceClass, Method method) {
    Class<?>[] parameterClasses = method.getParameterTypes();
    if (parameterClasses.length > 0) {
        Type[] parameterGenTypes = method.getGenericParameterTypes();
        Annotation[][] annotations = method.getParameterAnnotations();

        List<Parameter> methodParameters = new ArrayList<>(parameterClasses.length);
        boolean classEncoded = getClassAnnotation(resourceClass, Encoded.class) != null;
        boolean methodEncoded = getMethodAnnotation(method, resourceClass, Encoded.class, false) != null;
        for (int i = 0; i < parameterClasses.length; i++) {
            String defaultValue = null;
            Annotation parameterAnnotation = null;
            boolean encoded = false;

            for (int j = 0; j < annotations[i].length; j++) {
                Annotation annotation = annotations[i][j];
                Class<?> annotationType = annotation.annotationType();
                if (RESOURCE_METHOD_PARAMETER_ANNOTATIONS.contains(annotationType.getName())) {
                    if (parameterAnnotation != null) {
                        String msg = String.format(
                                "JAX-RS annotations on one of method parameters of resource %s, method %s are equivocality. Annotations: %s and %s can't be applied to one parameter",
                                toString(), method.getName(), parameterAnnotation, annotation);
                        throw new RuntimeException(msg);
                    }
                    parameterAnnotation = annotation;
                } else if (annotationType == Encoded.class) {
                    encoded = true;
                } else if (annotationType == DefaultValue.class) {
                    defaultValue = ((DefaultValue)annotation).value();
                }
            }

            Parameter methodParameter = new MethodParameter(
                    parameterAnnotation,
                    annotations[i],
                    parameterClasses[i],
                    parameterGenTypes[i],
                    defaultValue,
                    encoded || methodEncoded || classEncoded);
            methodParameters.add(methodParameter);
        }

        return methodParameters;
    }

    return Collections.emptyList();
}
 

private void read(ReaderContext context) {
    final SwaggerDefinition swaggerDefinition = context.getCls().getAnnotation(SwaggerDefinition.class);
    if (swaggerDefinition != null) {
        readSwaggerConfig(swaggerDefinition);
    }
    for (Method method : context.getCls().getMethods()) {
        if (ReflectionUtils.isOverriddenMethod(method, context.getCls())) {
            continue;
        }
        final Operation operation = new Operation();
        String operationPath = null;
        String httpMethod = null;

        final Type[] genericParameterTypes = method.getGenericParameterTypes();
        final Annotation[][] paramAnnotations = method.getParameterAnnotations();

        // Avoid java.util.ServiceLoader mechanism which finds ServletReaderExtension
        // for (ReaderExtension extension : ReaderExtensions.getExtensions()) {
        for (ReaderExtension extension : getExtensions()) {
            if (operationPath == null) {
                operationPath = extension.getPath(context, method);
            }
            if (httpMethod == null) {
                httpMethod = extension.getHttpMethod(context, method);
            }
            if (operationPath == null || httpMethod == null) {
                continue;
            }

            if (extension.isReadable(context)) {
                extension.setDeprecated(operation, method);
                extension.applyConsumes(context, operation, method);
                extension.applyProduces(context, operation, method);
                extension.applyOperationId(operation, method);
                extension.applySummary(operation, method);
                extension.applyDescription(operation, method);
                extension.applySchemes(context, operation, method);
                extension.applySecurityRequirements(context, operation, method);
                extension.applyTags(context, operation, method);
                extension.applyResponses(context, operation, method);
                extension.applyImplicitParameters(context, operation, method);
                for (int i = 0; i < genericParameterTypes.length; i++) {
                    extension.applyParameters(context, operation, genericParameterTypes[i], paramAnnotations[i]);
                }
            }
        }

        if (httpMethod != null && operationPath != null) {
            if (operation.getResponses() == null) {
                operation.defaultResponse(new Response().description("OK"));
            }
            else {
                for (String k : operation.getResponses().keySet()) {
                    if (k.equals("200")) {
                        Response response = operation.getResponses().get(k);
                        if ("successful operation".equals(response.getDescription()))
                            response.setDescription("OK");
                    }
                }
            }

            final Map<String,String> regexMap = new HashMap<>();
            final String parsedPath = PathUtils.parsePath(operationPath, regexMap);

            if (parsedPath != null) {
                // check for curly path params
                for (String seg : parsedPath.split("/")) {
                    if (seg.startsWith("{") && seg.endsWith("}")) {
                        String segName = seg.substring(1, seg.length() - 1);
                        boolean declared = false;
                        for (Parameter opParam : operation.getParameters()) {
                            if ("path".equals(opParam.getIn()) && segName.equals(opParam.getName())) {
                                declared = true;
                                break;
                            }
                        }
                        if (!declared) {
                            // add it for free
                            PathParameter pathParam = new PathParameter();
                            pathParam.setName(segName);
                            pathParam.setRequired(false);
                            pathParam.setDefaultValue("");
                            operation.parameter(pathParam);
                        }
                    }
                }
            }


            Path path = swagger.getPath(parsedPath);
            if (path == null) {
                path = new Path();
                swagger.path(parsedPath, path);
            }
            path.set(httpMethod.toLowerCase(), operation);
        }
    }
}
 

protected static Annotation[] getMethodAnnotations(Method aMethod, int bodyIndex) {
    return aMethod == null || bodyIndex == -1 ? new Annotation[0]
        : aMethod.getParameterAnnotations()[bodyIndex];
}