org.springframework.boot.context.properties.ConfigurationPropertiesJsr303Validator Maven / Gradle / Ivy
/*
* Copyright 2012-2018 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.boot.context.properties;
import org.springframework.boot.validation.MessageInterpolatorFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.util.ClassUtils;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;
import org.springframework.validation.annotation.Validated;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
/**
* Validator that supports configuration classes annotated with
* {@link Validated @Validated}.
*
* @author Phillip Webb
*/
final class ConfigurationPropertiesJsr303Validator implements Validator {
private static final String[] VALIDATOR_CLASSES = { "javax.validation.Validator",
"javax.validation.ValidatorFactory",
"javax.validation.bootstrap.GenericBootstrap" };
private final Delegate delegate;
ConfigurationPropertiesJsr303Validator(ApplicationContext applicationContext) {
this.delegate = new Delegate(applicationContext);
}
@Override
public boolean supports(Class type) {
return this.delegate.supports(type);
}
@Override
public void validate(Object target, Errors errors) {
this.delegate.validate(target, errors);
}
public static boolean isJsr303Present(ApplicationContext applicationContext) {
ClassLoader classLoader = applicationContext.getClassLoader();
for (String validatorClass : VALIDATOR_CLASSES) {
if (!ClassUtils.isPresent(validatorClass, classLoader)) {
return false;
}
}
return true;
}
private static class Delegate extends LocalValidatorFactoryBean {
Delegate(ApplicationContext applicationContext) {
setApplicationContext(applicationContext);
setMessageInterpolator(new MessageInterpolatorFactory().getObject());
afterPropertiesSet();
}
}
}