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.component.file;
018    
019    import java.io.File;
020    import java.io.IOException;
021    import java.util.Date;
022    
023    import org.apache.camel.CamelContext;
024    import org.apache.camel.Exchange;
025    import org.apache.camel.ExchangePattern;
026    import org.apache.camel.impl.DefaultExchange;
027    
028    /**
029     * A {@link Exchange} for File
030     *
031     * @version $Revision: 63947 $
032     */
033    public class FileExchange extends DefaultExchange {
034        private File file;
035    
036        public FileExchange(CamelContext camelContext, ExchangePattern pattern, File file) {
037            super(camelContext, pattern);
038            setFile(file);
039        }
040    
041        public FileExchange(DefaultExchange parent, File file) {
042            super(parent);
043            setFile(file);
044        }
045    
046        public File getFile() {
047            return this.file;
048        }
049    
050        public void setFile(File file) {
051            setIn(new FileMessage(file));
052            this.file = file;
053            populateHeaders(file);
054        }
055    
056        public Exchange newInstance() {
057            return new FileExchange(this, getFile());
058        }
059    
060        private void populateHeaders(File file) {
061            // set additional headers with file information
062            if (file != null) {
063                getIn().setHeader("CamelFileName", file.getName());
064                getIn().setHeader("CamelFileAbsolutePath", file.getAbsolutePath());
065                getIn().setHeader("CamelFileParent", file.getParent());
066                getIn().setHeader("CamelFilePath", file.getPath());
067                try {
068                    getIn().setHeader("CamelFileCanonicalPath", file.getCanonicalPath());
069                } catch (IOException e) {
070                    // ignore
071                }
072                if (file.length() > 0) {
073                    getIn().setHeader("CamelFileLength", new Long(file.length()));
074                }
075                if (file.lastModified() > 0) {
076                    getIn().setHeader("CamelFileLastModified", new Date(file.lastModified()));
077                }
078            }
079        }
080    
081    }