/*
* Sonatype Nexus (TM) Open Source Version
* Copyright (c) 2007-2014 Sonatype, Inc.
* All rights reserved. Includes the third-party code listed at http://links.sonatype.com/products/nexus/oss/attributions.
*
* This program and the accompanying materials are made available under the terms of the Eclipse Public License Version 1.0,
* which accompanies this distribution and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Sonatype Nexus (TM) Professional Version is available from Sonatype, Inc. "Sonatype" and "Sonatype Nexus" are trademarks
* of Sonatype, Inc. Apache Maven is a trademark of the Apache Software Foundation. M2eclipse is a trademark of the
* Eclipse Foundation. All other trademarks are the property of their respective owners.
*/
package org.sonatype.nexus.extender.modules;
import java.lang.annotation.ElementType;
import javax.inject.Singleton;
import javax.validation.Path;
import javax.validation.Path.Node;
import javax.validation.TraversableResolver;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import javax.validation.executable.ExecutableValidator;
import org.sonatype.nexus.validation.Validate;
import com.google.inject.AbstractModule;
import com.google.inject.Provides;
import com.google.inject.matcher.Matchers;
import org.aopalliance.intercept.MethodInterceptor;
import org.hibernate.validator.HibernateValidator;
/**
* Provides validation of methods annotated with {@link Validate}.
*
* @since 3.0
*/
public class ValidationModule
extends AbstractModule
{
@Override
protected void configure() {
final MethodInterceptor interceptor = new ValidationInterceptor();
bindInterceptor(Matchers.any(), Matchers.annotatedWith(Validate.class), interceptor);
requestInjection(interceptor);
}
@Provides
@Singleton
ValidatorFactory validatorFactory() {
ClassLoader tccl = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(HibernateValidator.class.getClassLoader());
return Validation.byDefaultProvider().configure() // start with default configuration
.traversableResolver(new AlwaysTraversableResolver()) // disable JPA reachability
.buildValidatorFactory();
}
finally {
Thread.currentThread().setContextClassLoader(tccl);
}
}
@Provides
@Singleton
Validator validator(final ValidatorFactory validatorFactory) {
return validatorFactory.getValidator();
}
@Provides
@Singleton
ExecutableValidator executableValidator(final Validator validator) {
return validator.forExecutables();
}
static class AlwaysTraversableResolver
implements TraversableResolver
{
public boolean isCascadable(final Object traversableObject, final Node traversableProperty,
final Class<?> rootBeanType, final Path pathToTraversableObject, final ElementType elementType)
{
return true;
}
public boolean isReachable(final Object traversableObject, final Node traversableProperty,
final Class<?> rootBeanType, final Path pathToTraversableObject, final ElementType elementType)
{
return true;
}
}
}