001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.builder;
018
019import org.apache.camel.AsyncCallback;
020import org.apache.camel.Exchange;
021import org.apache.camel.ExtendedExchange;
022import org.apache.camel.Processor;
023import org.apache.camel.spi.RouteContext;
024import org.apache.camel.support.processor.DelegateAsyncProcessor;
025
026/**
027 * A builder to disable the use of an error handler so that any exceptions are
028 * thrown. This not recommended in general, the
029 * <a href="http://camel.apache.org/dead-letter-channel.html">Dead Letter
030 * Channel</a> should be used if you are unsure; however it can be useful
031 * sometimes to disable an error handler inside a complex route so that
032 * exceptions bubble up to the parent {@link Processor}
033 */
034public class NoErrorHandlerBuilder extends ErrorHandlerBuilderSupport {
035
036    @Override
037    public Processor createErrorHandler(RouteContext routeContext, Processor processor) {
038        return new DelegateAsyncProcessor(processor) {
039            @Override
040            public boolean process(final Exchange exchange, final AsyncCallback callback) {
041                return super.process(exchange, new AsyncCallback() {
042                    @Override
043                    public void done(boolean doneSync) {
044                        exchange.adapt(ExtendedExchange.class).setRedeliveryExhausted(false);
045                        callback.done(doneSync);
046                    }
047                });
048            }
049
050            @Override
051            public String toString() {
052                if (processor == null) {
053                    // if no output then dont do any description
054                    return "";
055                }
056                return "NoErrorHandler[" + processor + "]";
057            }
058        };
059    }
060
061    @Override
062    public boolean supportTransacted() {
063        return false;
064    }
065
066    @Override
067    public ErrorHandlerBuilder cloneBuilder() {
068        NoErrorHandlerBuilder answer = new NoErrorHandlerBuilder();
069        cloneBuilder(answer);
070        return answer;
071    }
072}