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.processor;
018    
019    import org.apache.camel.AsyncProcessor;
020    import org.apache.camel.Exchange;
021    import org.apache.camel.Processor;
022    import org.apache.camel.spi.RouteContext;
023    import org.apache.camel.spi.UnitOfWork;
024    
025    /**
026     * An {@link UnitOfWorkProcessor} that creates a child {@link UnitOfWork} that is
027     * associated to a parent {@link UnitOfWork}.
028     *
029     * @see SubUnitOfWorkProcessor
030     */
031    public class ChildUnitOfWorkProcessor extends UnitOfWorkProcessor {
032    
033        private final UnitOfWork parent;
034    
035        public ChildUnitOfWorkProcessor(UnitOfWork parent, Processor processor) {
036            super(processor);
037            this.parent = parent;
038        }
039    
040        public ChildUnitOfWorkProcessor(UnitOfWork parent, AsyncProcessor processor) {
041            super(processor);
042            this.parent = parent;
043        }
044    
045        public ChildUnitOfWorkProcessor(UnitOfWork parent, RouteContext routeContext, Processor processor) {
046            super(routeContext, processor);
047            this.parent = parent;
048        }
049    
050        public ChildUnitOfWorkProcessor(UnitOfWork parent, RouteContext routeContext, AsyncProcessor processor) {
051            super(routeContext, processor);
052            this.parent = parent;
053        }
054    
055        @Override
056        protected UnitOfWork createUnitOfWork(Exchange exchange) {
057            // let the parent create a child unit of work to be used
058            return parent.createChildUnitOfWork(exchange);
059        }
060    
061    }