/*
* $Id: AnnotationValidationInterceptor.java 663335 2008-06-04 18:15:36Z musachy $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.struts2.interceptor.validation;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collection;
import org.apache.commons.lang.ArrayUtils;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.util.AnnotationUtils;
import com.opensymphony.xwork2.validator.ValidationInterceptor;
/**
* Extends the xwork validation interceptor to also check for a @SkipValidation
* annotation, and if found, don't validate this action method
*/
public class AnnotationValidationInterceptor extends ValidationInterceptor {
/** Auto-generated serialization id */
private static final long serialVersionUID = 1813272797367431184L;
protected String doIntercept(ActionInvocation invocation) throws Exception {
Object action = invocation.getAction();
if (action != null) {
Method method = getActionMethod(action.getClass(), invocation.getProxy().getMethod());
Collection<Method> annotatedMethods = AnnotationUtils.getAnnotatedMethods(action.getClass(), SkipValidation.class);
if (annotatedMethods.contains(method))
return invocation.invoke();
//check if method overwites an annotated method
Class clazz = action.getClass().getSuperclass();
while (clazz != null) {
annotatedMethods = AnnotationUtils.getAnnotatedMethods(clazz, SkipValidation.class);
if (annotatedMethods != null) {
for (Method annotatedMethod : annotatedMethods) {
if (annotatedMethod.getName().equals(method.getName())
&& Arrays.equals(annotatedMethod.getParameterTypes(), method.getParameterTypes())
&& Arrays.equals(annotatedMethod.getExceptionTypes(), method.getExceptionTypes()))
return invocation.invoke();
}
}
clazz = clazz.getSuperclass();
}
}
return super.doIntercept(invocation);
}
// FIXME: This is copied from DefaultActionInvocation but should be exposed through the interface
protected Method getActionMethod(Class actionClass, String methodName) throws NoSuchMethodException {
Method method;
try {
method = actionClass.getMethod(methodName, new Class[0]);
} catch (NoSuchMethodException e) {
// hmm -- OK, try doXxx instead
try {
String altMethodName = "do" + methodName.substring(0, 1).toUpperCase() + methodName.substring(1);
method = actionClass.getMethod(altMethodName, new Class[0]);
} catch (NoSuchMethodException e1) {
// throw the original one
throw e;
}
}
return method;
}
}
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