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     */
017    package org.apache.camel.builder;
018    
019    import org.apache.camel.AsyncCallback;
020    import org.apache.camel.Exchange;
021    import org.apache.camel.Processor;
022    import org.apache.camel.processor.DelegateAsyncProcessor;
023    import org.apache.camel.spi.RouteContext;
024    
025    /**
026     * A builder to disable the use of an error handler so that any exceptions are thrown.
027     * This not recommended in general, the
028     * <a href="http://camel.apache.org/dead-letter-channel.html">Dead Letter Channel</a> should be used
029     * if you are unsure; however it can be useful sometimes to disable an error handler inside a complex route
030     * so that exceptions bubble up to the parent {@link Processor}
031     *
032     * @version 
033     */
034    public class NoErrorHandlerBuilder extends ErrorHandlerBuilderSupport {
035    
036        public Processor createErrorHandler(RouteContext routeContext, Processor processor) {
037            return new DelegateAsyncProcessor(processor) {
038                @Override
039                public boolean process(final Exchange exchange, final AsyncCallback callback) {
040                    return super.process(exchange, new AsyncCallback() {
041                        @Override
042                        public void done(boolean doneSync) {
043                            exchange.removeProperty(Exchange.REDELIVERY_EXHAUSTED);
044                            callback.done(doneSync);
045                        }
046                    });
047                }
048    
049                @Override
050                public String toString() {
051                    if (processor == null) {
052                        // if no output then dont do any description
053                        return "";
054                    }
055                    return "NoErrorHandler[" + processor + "]";
056                }
057            };
058        }
059    
060        public boolean supportTransacted() {
061            return false;
062        }
063    
064        @Override
065        public ErrorHandlerBuilder cloneBuilder() {
066            NoErrorHandlerBuilder answer = new NoErrorHandlerBuilder();
067            cloneBuilder(answer);
068            return answer;
069        }
070    }