/*
* Copyright 2010 The gmodules Team
*
* 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 org.apache.bval.guice;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import javax.validation.Validator;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.bval.jsr303.extensions.MethodValidator;
import com.google.inject.Inject;
/**
* Method interceptor for {@link Validate} annotation.
*
* @version $Id: ValidateMethodInterceptor.java 943848 2010-05-13 08:52:06Z simonetripodi $
*/
public final class ValidateMethodInterceptor implements MethodInterceptor {
/**
* The Validator reference.
*/
@Inject
private Validator validator;
/**
* Sets the Validator reference.
*
* @param validator the Validator reference.
*/
public void setValidator(Validator validator) {
this.validator = validator;
}
/**
* {@inheritDoc}
*/
public Object invoke(MethodInvocation invocation) throws Throwable {
Validate validate = invocation.getMethod().getAnnotation(Validate.class);
MethodValidator methodValidator = this.validator.unwrap(MethodValidator.class);
Set<ConstraintViolation<?>> constraintViolations = new HashSet<ConstraintViolation<?>>();
Class<?> clazz = invocation.getMethod().getDeclaringClass();
Method method = invocation.getMethod();
Object[] arguments = invocation.getArguments();
Class<?>[] groups = validate.groups();
constraintViolations.addAll(methodValidator.validateParameters(clazz,
method,
arguments,
groups));
if (!constraintViolations.isEmpty()) {
throw new ConstraintViolationException("Validation error when calling method '"
+ method
+ "' with arguments "
+ Arrays.deepToString(arguments), constraintViolations);
}
Object returnedValue = invocation.proceed();
if (validate.validateReturnedValue()) {
constraintViolations.addAll(methodValidator.validateReturnedValue(clazz, method, returnedValue, groups));
if (!constraintViolations.isEmpty()) {
throw new ConstraintViolationException("Method '"
+ method
+ "' returned a not valid value "
+ returnedValue, constraintViolations);
}
}
return returnedValue;
}
}