| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.bval.jsr; |
| |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.function.Supplier; |
| |
| import javax.validation.ClockProvider; |
| import javax.validation.ConstraintValidator; |
| import javax.validation.ConstraintValidatorFactory; |
| import javax.validation.MessageInterpolator; |
| import javax.validation.ParameterNameProvider; |
| import javax.validation.TraversableResolver; |
| import javax.validation.Validator; |
| import javax.validation.ValidatorContext; |
| import javax.validation.valueextraction.ValueExtractor; |
| |
| import org.apache.bval.jsr.descriptor.ConstraintD; |
| import org.apache.bval.jsr.descriptor.DescriptorManager; |
| import org.apache.bval.jsr.groups.GroupsComputer; |
| import org.apache.bval.jsr.valueextraction.ValueExtractors; |
| import org.apache.bval.util.reflection.Reflection; |
| import org.apache.commons.weaver.privilizer.Privilizing; |
| import org.apache.commons.weaver.privilizer.Privilizing.CallTo; |
| |
| /** |
| * Description: Represents the context that is used to create {@link ClassValidator} instances. |
| */ |
| @Privilizing(@CallTo(Reflection.class)) |
| public class ApacheFactoryContext implements ValidatorContext { |
| private final ApacheValidatorFactory factory; |
| private final ValueExtractors valueExtractors; |
| |
| private MessageInterpolator messageInterpolator; |
| private TraversableResolver traversableResolver; |
| private ParameterNameProvider parameterNameProvider; |
| private ConstraintValidatorFactory constraintValidatorFactory; |
| private ClockProvider clockProvider; |
| |
| /** |
| * Create a new ApacheFactoryContext instance. |
| * |
| * @param factory |
| * validator factory |
| * @param metaBeanFinder |
| * meta finder |
| */ |
| public ApacheFactoryContext(ApacheValidatorFactory factory) { |
| this.factory = factory; |
| valueExtractors = factory.getValueExtractors().createChild(); |
| } |
| |
| /** |
| * Discard cached metadata. Calling this method unnecessarily has the effect of severly limiting performance, |
| * therefore only do so when changes have been made that affect validation metadata, i.e. particularly NOT in |
| * response to: |
| * <ul> |
| * <li>{@link #messageInterpolator(MessageInterpolator)}</li> |
| * <li>{@link #traversableResolver(TraversableResolver)}</li> |
| * <li>{@link #constraintValidatorFactory(ConstraintValidatorFactory)</li> |
| * </ul> |
| */ |
| private synchronized void resetMeta() { |
| getDescriptorManager().clear(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public ApacheFactoryContext messageInterpolator(MessageInterpolator messageInterpolator) { |
| this.messageInterpolator = messageInterpolator; |
| return this; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public ApacheFactoryContext traversableResolver(TraversableResolver traversableResolver) { |
| this.traversableResolver = traversableResolver; |
| return this; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public ApacheFactoryContext constraintValidatorFactory(ConstraintValidatorFactory constraintValidatorFactory) { |
| this.constraintValidatorFactory = constraintValidatorFactory; |
| return this; |
| } |
| |
| @Override |
| public ApacheFactoryContext parameterNameProvider(ParameterNameProvider parameterNameProvider) { |
| this.parameterNameProvider = parameterNameProvider; |
| resetMeta(); // needed since parameter names are a component of validation metadata |
| return this; |
| } |
| |
| @Override |
| public ApacheFactoryContext clockProvider(ClockProvider clockProvider) { |
| this.clockProvider = clockProvider; |
| return this; |
| } |
| |
| @Override |
| public ApacheFactoryContext addValueExtractor(ValueExtractor<?> extractor) { |
| valueExtractors.add(extractor); |
| return this; |
| } |
| |
| /** |
| * Get the {@link ConstraintValidatorFactory}. |
| * |
| * @return {@link ConstraintValidatorFactory} |
| */ |
| public ConstraintValidatorFactory getConstraintValidatorFactory() { |
| return constraintValidatorFactory == null ? factory.getConstraintValidatorFactory() |
| : constraintValidatorFactory; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Validator getValidator() { |
| return new ValidatorImpl(this); |
| } |
| |
| /** |
| * Get the {@link MessageInterpolator}. |
| * |
| * @return {@link MessageInterpolator} |
| */ |
| public MessageInterpolator getMessageInterpolator() { |
| return messageInterpolator == null ? factory.getMessageInterpolator() : messageInterpolator; |
| } |
| |
| /** |
| * Get the {@link TraversableResolver}. |
| * |
| * @return {@link TraversableResolver} |
| */ |
| public TraversableResolver getTraversableResolver() { |
| return traversableResolver == null ? factory.getTraversableResolver() : traversableResolver; |
| } |
| |
| public ParameterNameProvider getParameterNameProvider() { |
| return parameterNameProvider == null ? factory.getParameterNameProvider() : parameterNameProvider; |
| } |
| |
| public ClockProvider getClockProvider() { |
| return clockProvider == null ? factory.getClockProvider() : clockProvider; |
| } |
| |
| public ValueExtractors getValueExtractors() { |
| return valueExtractors; |
| } |
| |
| public DescriptorManager getDescriptorManager() { |
| // TODO implementation-specific feature to handle context-local descriptor customizations |
| return factory.getDescriptorManager(); |
| } |
| |
| public GroupsComputer getGroupsComputer() { |
| return factory.getGroupsComputer(); |
| } |
| |
| public ConstraintCached getConstraintsCache() { |
| return factory.getConstraintsCache(); |
| } |
| |
| public ApacheValidatorFactory getFactory() { |
| return factory; |
| } |
| |
| public ConstraintValidator getOrComputeConstraintValidator(final ConstraintD<?> constraint, final Supplier<ConstraintValidator> computer) { |
| final ConcurrentMap<ConstraintD<?>, ConstraintValidator<?, ?>> constraintsCache = factory.getConstraintsCache().getValidators(); |
| final ConstraintValidator<?, ?> validator = constraintsCache.get(constraint); // constraints are cached so we can query per instance |
| if (validator != null) { |
| return validator; |
| } |
| ConstraintValidator<?, ?> instance = computer.get(); |
| final ConstraintValidator<?, ?> existing = constraintsCache.putIfAbsent(constraint, instance); |
| if (existing != null) { |
| instance = existing; |
| } |
| return instance; |
| } |
| } |