| /** |
| * 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.camel.processor; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.impl.DefaultUnitOfWork; |
| import static org.apache.camel.util.ObjectHelper.wrapRuntimeCamelException; |
| |
| /** |
| * Handles calling the UnitOfWork.done() method when processing of an exchange |
| * is complete. |
| */ |
| public final class UnitOfWorkProcessor extends DelegateProcessor { |
| |
| public UnitOfWorkProcessor(Processor processor) { |
| super(processor); |
| } |
| |
| @Override |
| public String toString() { |
| return "UnitOfWork(" + processor + ")"; |
| } |
| |
| @Override |
| protected void processNext(Exchange exchange) throws Exception { |
| if (exchange.getUnitOfWork() == null) { |
| // If there is no existing UoW, then we should start one and |
| // terminate it once processing is completed for the exchange. |
| final DefaultUnitOfWork uow = new DefaultUnitOfWork(exchange); |
| exchange.setUnitOfWork(uow); |
| try { |
| uow.start(); |
| } catch (Exception e) { |
| throw wrapRuntimeCamelException(e); |
| } |
| |
| // process the exchange |
| try { |
| processor.process(exchange); |
| } catch (Exception e) { |
| exchange.setException(e); |
| } |
| |
| // unit of work is done |
| exchange.getUnitOfWork().done(exchange); |
| try { |
| uow.stop(); |
| } catch (Exception e) { |
| throw wrapRuntimeCamelException(e); |
| } |
| exchange.setUnitOfWork(null); |
| } else { |
| // There was an existing UoW, so we should just pass through.. |
| // so that the guy the initiated the UoW can terminate it. |
| processor.process(exchange); |
| } |
| } |
| |
| } |