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ValidatorUtilities.java
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ValidatorUtilities.java
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/*
* Copyright (c) 2016, 2024 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.hk2.utilities.general;
import java.lang.annotation.ElementType;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.concurrent.locks.ReentrantLock;
import jakarta.validation.Path;
import jakarta.validation.TraversableResolver;
import jakarta.validation.Validation;
import jakarta.validation.Validator;
import jakarta.validation.ValidatorContext;
import jakarta.validation.ValidatorFactory;
import org.glassfish.hk2.utilities.general.internal.MessageInterpolatorImpl;
import org.hibernate.validator.HibernateValidator;
/**
* @author jwells
*
*/
public class ValidatorUtilities {
private static final ReentrantLock slock = new ReentrantLock();
private static final TraversableResolver TRAVERSABLE_RESOLVER = new TraversableResolver() {
public boolean isReachable(Object traversableObject,
Path.Node traversableProperty, Class<?> rootBeanType,
Path pathToTraversableObject, ElementType elementType) {
return true;
}
public boolean isCascadable(Object traversableObject,
Path.Node traversableProperty, Class<?> rootBeanType,
Path pathToTraversableObject, ElementType elementType) {
return true;
}
};
private static Validator validator;
private static Validator initializeValidator() {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(HibernateValidator.class.getClassLoader());
ValidatorFactory validatorFactory = Validation.buildDefaultValidatorFactory();
ValidatorContext validatorContext = validatorFactory.usingContext();
validatorContext.messageInterpolator(new MessageInterpolatorImpl());
return validatorContext.traversableResolver(
TRAVERSABLE_RESOLVER).getValidator();
}
finally {
Thread.currentThread().setContextClassLoader(cl);
}
}
/**
* Gets a validator that can be used to validate that is initialized with HK2
* specific utilities such as the message interpolator
*
* @return A jakarta bean validator for validating constraints
*/
public static Validator getValidator() {
slock.lock();
try {
if (validator == null) {
validator = AccessController.doPrivileged(new PrivilegedAction<Validator>() {
@Override
public Validator run() {
return initializeValidator();
}
});
}
if (validator == null) {
throw new IllegalStateException("Could not find a jakarta.validator");
}
return validator;
} finally {
slock.unlock();
}
}
}