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JSR 380's RI, Hibernate Validator version ${hibernate-validator.version} and its dependencies repackaged as OSGi bundle

There is a newer version: 5.1.0

/*
 * Hibernate Validator, declare and validate application constraints
 *
 * License: Apache License, Version 2.0
 * See the license.txt file in the root directory or .
 */
package org.hibernate.validator.internal.engine.constraintvalidation;

import java.security.AccessController;
import java.security.PrivilegedAction;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorFactory;

import org.hibernate.validator.internal.util.privilegedactions.NewInstance;

/**
 * Default {@code ConstraintValidatorFactory} using a no-arg constructor.
 *
 * @author Emmanuel Bernard
 * @author Hardy Ferentschik
 */
//TODO Can we make the constructor non-public?
public class ConstraintValidatorFactoryImpl implements ConstraintValidatorFactory {

	@Override
	public final > T getInstance(Class key) {
		return run( NewInstance.action( key, "ConstraintValidator" ) );
	}

	@Override
	public void releaseInstance(ConstraintValidator instance) {
		// noop
	}

	/**
	 * Runs the given privileged action, using a privileged block if required.
	 * 
	 * NOTE: This must never be changed into a publicly available method to avoid execution of arbitrary
	 * privileged actions within HV's protection domain.
	 */
	private  T run(PrivilegedAction action) {
		return System.getSecurityManager() != null ? AccessController.doPrivileged( action ) : action.run();
	}
}