/*
* JBoss, Home of Professional Open Source
* Copyright [2010], Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.jboss.seam.servlet.exception.handler;
import java.lang.reflect.Method;
import javax.enterprise.inject.Instance;
import javax.inject.Inject;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
import org.jboss.seam.exception.control.CaughtException;
import org.jboss.seam.servlet.http.HttpServletRequestContext;
public class ExceptionResponseServiceHandler {
// does this have to be Instance?
@Inject
private Instance<HttpServletRequestContext> requestCtxResolver;
@AroundInvoke
public Object processException(InvocationContext ctx) throws Exception {
Method m = ctx.getMethod();
// FIXME would be helpful if Catch provided a utility to get the CaughtException
if (ctx.getParameters().length > 0 && ctx.getParameters()[0] instanceof CaughtException) {
HttpServletRequestContext requestCtx = requestCtxResolver.get();
// we can't respond w/ this exception handler if response is committed
// TODO should see if exception is marked handled already
if (requestCtx.getResponse().isCommitted()) {
return Void.TYPE;
}
CaughtException<?> c = (CaughtException<?>) ctx.getParameters()[0];
if (m.isAnnotationPresent(SendHttpError.class)) {
SendHttpError r = m.getAnnotation(SendHttpError.class);
String message = r.message().trim();
if (r.message().length() == 0 && r.useExceptionMessageAsDefault()) {
message = c.getException().getMessage();
}
if (message != null && message.length() > 0) {
requestCtx.getResponse().sendError(r.status(), message);
} else {
requestCtx.getResponse().sendError(r.status());
}
} else if (m.isAnnotationPresent(SendErrorPage.class)) {
SendErrorPage r = m.getAnnotation(SendErrorPage.class);
if (r.redirect()) {
requestCtx.getResponse().sendRedirect(requestCtx.getResponse().encodeRedirectURL(r.value()));
} else {
requestCtx.getRequest().getRequestDispatcher(r.value())
.forward(requestCtx.getRequest(), requestCtx.getResponse());
}
} else {
// perhaps log a warning?
}
}
return Void.TYPE;
}
}