/**
* Copyright 2011 Gunnar Morling (http://www.gunnarmorling.de/)
*
* 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
*
* 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 de.gmorling.methodvalidation.cdi;
import java.util.Set;
import javax.inject.Inject;
import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
import javax.validation.ValidatorFactory;
import org.hibernate.validator.MethodConstraintViolation;
import org.hibernate.validator.MethodConstraintViolationException;
import org.hibernate.validator.MethodValidator;
@AutoValidating
@Interceptor
public class ValidationInterceptor {
@Inject
private ValidatorFactory validatorFactory;
@AroundInvoke
public Object validateMethodInvocation(InvocationContext ctx) throws Exception {
MethodValidator validator = validatorFactory.getValidator().unwrap(
MethodValidator.class);
Set<MethodConstraintViolation<Object>> violations = validator
.validateParameters(
ctx.getTarget(), ctx.getMethod(), ctx.getParameters());
if (!violations.isEmpty()) {
throw new MethodConstraintViolationException(violations);
}
Object result = ctx.proceed();
violations = validator.validateReturnValue(ctx.getTarget(), ctx.getMethod(), result);
if (!violations.isEmpty()) {
throw new MethodConstraintViolationException(violations);
}
return result;
}
}