| /* |
| * Copyright (c) 2013, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0, which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * This Source Code may also be made available under the following Secondary |
| * Licenses when the conditions for such availability set forth in the |
| * Eclipse Public License v. 2.0 are satisfied: GNU General Public License, |
| * version 2 with the GNU Classpath Exception, which is available at |
| * https://www.gnu.org/software/classpath/license.html. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 |
| */ |
| |
| package org.glassfish.jersey.tests.cdi.bv; |
| |
| import java.lang.reflect.Field; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.util.Set; |
| |
| import javax.enterprise.inject.Vetoed; |
| import javax.enterprise.inject.spi.BeanManager; |
| import javax.inject.Inject; |
| import javax.validation.ConstraintViolation; |
| |
| /** |
| * Helper class to implement support for {@code javax.mvc.validation.ValidationResult}. |
| * |
| * @author Santiago Pericas-Geertsen |
| */ |
| @Vetoed |
| public final class ValidationResultUtil { |
| |
| private static final String VALIDATION_RESULT = ValidationResult.class.getName(); |
| |
| private ValidationResultUtil() { |
| throw new AssertionError("Instantiation not allowed."); |
| } |
| |
| /** |
| * Search for a {@code javax.mvc.validation.ValidationResult} field in the resource's |
| * class hierarchy. Field must be annotated with {@link javax.inject.Inject}. |
| * |
| * @param resource resource instance. |
| * @return field or {@code null} if none is found. |
| */ |
| public static Field getValidationResultField(final Object resource) { |
| Class<?> clazz = resource.getClass(); |
| do { |
| for (Field f : clazz.getDeclaredFields()) { |
| // Of ValidationResult and CDI injectable |
| if (f.getType().getName().equals(VALIDATION_RESULT) |
| && f.getAnnotation(Inject.class) != null) { |
| return f; |
| } |
| } |
| clazz = clazz.getSuperclass(); |
| } while (clazz != Object.class); |
| return null; |
| } |
| |
| /** |
| * Updates a {@code javax.mvc.validation.ValidationResult} field. In pseudo-code: |
| * <p/> |
| * resource.field.setViolations(constraints) |
| * |
| * @param resource resource instance. |
| * @param field field to be updated. |
| * @param constraints new set of constraints. |
| */ |
| public static void updateValidationResultField(Object resource, Field field, |
| Set<ConstraintViolation<?>> constraints) { |
| try { |
| field.setAccessible(true); |
| final Object obj = field.get(resource); |
| Method setter; |
| try { |
| setter = obj.getClass().getMethod("setViolations", Set.class); |
| } catch (NoSuchMethodException e) { |
| setter = obj.getClass().getSuperclass().getMethod("setViolations", Set.class); |
| } |
| setter.invoke(obj, constraints); |
| } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) { |
| // ignore for now |
| System.out.println("Damn it..."); |
| } catch (Throwable t) { |
| System.out.println("What the heck..."); |
| } |
| } |
| |
| /** |
| * Updates a {@code javax.mvc.validation.ValidationResult} property. In pseudo-code: |
| * <p/> |
| * obj = getter.invoke(resource); |
| * obj.setViolations(constraints); |
| * setter.invoke(resource, obj); |
| * |
| * @param resource resource instance. |
| * @param getter getter to be used. |
| * @param constraints new set of constraints. |
| */ |
| public static void updateValidationResultProperty(Object resource, Method getter, |
| Set<ConstraintViolation<?>> constraints) { |
| try { |
| final Object obj = getter.invoke(resource); |
| Method setViolations; |
| try { |
| setViolations = obj.getClass().getMethod("setViolations", Set.class); |
| } catch (NoSuchMethodException e) { |
| setViolations = obj.getClass().getSuperclass().getMethod("setViolations", Set.class); |
| } |
| setViolations.invoke(obj, constraints); |
| |
| final Method setter = getValidationResultSetter(resource); |
| |
| if (setter != null) { |
| setter.invoke(resource, obj); |
| } |
| } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) { |
| // ignore for now |
| } |
| } |
| |
| /** |
| * Determines if a resource has a property of type {@code javax.mvc.validation.ValidationResult}. |
| * |
| * @param resource resource instance. |
| * @return outcome of test. |
| */ |
| public static boolean hasValidationResultProperty(final Object resource) { |
| return getValidationResultGetter(resource) != null && getValidationResultSetter(resource) != null; |
| } |
| |
| /** |
| * Returns a getter for {@code javax.mvc.validation.ValidationResult} or {@code null} |
| * if one cannot be found. |
| * |
| * @param resource resource instance. |
| * @return getter or {@code null} if not available. |
| */ |
| public static Method getValidationResultGetter(final Object resource) { |
| Class<?> clazz = resource.getClass(); |
| do { |
| for (Method m : clazz.getDeclaredMethods()) { |
| if (isValidationResultGetter(m)) { |
| return m; |
| } |
| } |
| clazz = clazz.getSuperclass(); |
| } while (clazz != Object.class); |
| return null; |
| } |
| |
| /** |
| * Determines if a method is a getter for {@code javax.mvc.validation.ValidationResult}. |
| * |
| * @param m method to test. |
| * @return outcome of test. |
| */ |
| private static boolean isValidationResultGetter(Method m) { |
| return m.getName().startsWith("get") |
| && m.getReturnType().getName().equals(VALIDATION_RESULT) |
| && Modifier.isPublic(m.getModifiers()) && m.getParameterTypes().length == 0; |
| } |
| |
| /** |
| * Returns a setter for {@code javax.mvc.validation.ValidationResult} or {@code null} |
| * if one cannot be found. |
| * |
| * @param resource resource instance. |
| * @return setter or {@code null} if not available. |
| */ |
| public static Method getValidationResultSetter(final Object resource) { |
| return getValidationResultSetter(resource.getClass()); |
| } |
| |
| private static Method getValidationResultSetter(final Class<?> resourceClass) { |
| Class<?> clazz = resourceClass; |
| do { |
| for (Method m : clazz.getDeclaredMethods()) { |
| if (isValidationResultSetter(m)) { |
| return m; |
| } |
| } |
| clazz = clazz.getSuperclass(); |
| } while (clazz != Object.class); |
| return null; |
| } |
| |
| /** |
| * Determines if a method is a setter for {@code javax.mvc.validation.ValidationResult}. |
| * As a CDI initializer method, it must be annotated with {@link javax.inject.Inject}. |
| * |
| * @param m method to test. |
| * @return outcome of test. |
| */ |
| private static boolean isValidationResultSetter(Method m) { |
| return m.getName().startsWith("set") && m.getParameterTypes().length == 1 |
| && m.getParameterTypes()[0].getName().equals(VALIDATION_RESULT) |
| && m.getReturnType() == Void.TYPE && Modifier.isPublic(m.getModifiers()) |
| && m.getAnnotation(Inject.class) != null; |
| } |
| } |