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 java.util.List; 020 021 import org.apache.camel.Processor; 022 import org.apache.camel.model.ExceptionType; 023 import org.apache.camel.spi.RouteContext; 024 import org.apache.camel.util.ObjectHelper; 025 026 /** 027 * Represents a proxy to an error handler builder which is resolved by named reference 028 * 029 * @version $Revision: 792 $ 030 */ 031 public class ErrorHandlerBuilderRef extends ErrorHandlerBuilderSupport { 032 private final String ref; 033 private ErrorHandlerBuilder handler; 034 035 public ErrorHandlerBuilderRef(String ref) { 036 this.ref = ref; 037 } 038 039 public ErrorHandlerBuilder copy() { 040 return new ErrorHandlerBuilderRef(ref); 041 } 042 043 @Override 044 public void addErrorHandlers(ExceptionType exception) { 045 if (handler != null) { 046 handler.addErrorHandlers(exception); 047 } 048 super.addErrorHandlers(exception); 049 } 050 051 public Processor createErrorHandler(RouteContext routeContext, Processor processor) throws Exception { 052 if (handler == null) { 053 handler = routeContext.lookup(ref, ErrorHandlerBuilder.class); 054 ObjectHelper.notNull(handler, "error handler '" + ref + "'"); 055 List<ExceptionType> list = getExceptions(); 056 for (ExceptionType exceptionType : list) { 057 handler.addErrorHandlers(exceptionType); 058 } 059 } 060 return handler.createErrorHandler(routeContext, processor); 061 } 062 }