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 */
017package org.apache.camel.component.dataset;
018
019import java.io.File;
020import java.io.IOException;
021import java.util.LinkedList;
022import java.util.List;
023
024import org.apache.camel.util.Scanner;
025
026/**
027 * A DataSet that reads payloads from a file that are used to create each message exchange
028 * along with using a pluggable transformer to customize the messages.  The file contents may optionally
029 * be split using a supplied token.
030 *
031 * @version
032 */
033public class FileDataSet extends ListDataSet {
034    private File sourceFile;
035    private String delimiter = "\\z";
036
037    private List<Object> defaultBodies;
038
039    public FileDataSet(String sourceFileName) throws IOException {
040        this(new File(sourceFileName));
041    }
042
043    public FileDataSet(File sourceFile) throws IOException {
044        this(sourceFile, "\\z");
045    }
046
047    public FileDataSet(String sourceFileName, String delimiter) throws IOException {
048        this(new File(sourceFileName), delimiter);
049    }
050
051    public FileDataSet(File sourceFile, String delimiter) throws IOException {
052        setSourceFile(sourceFile, delimiter);
053    }
054
055    // Properties
056    //-------------------------------------------------------------------------
057
058    public File getSourceFile() {
059        return sourceFile;
060    }
061
062    public void setSourceFile(File sourceFile) throws IOException {
063        this.sourceFile = sourceFile;
064        readSourceFile();
065    }
066
067    public void setSourceFile(File sourceFile, String delimiter) throws IOException {
068        this.sourceFile = sourceFile;
069        this.delimiter = delimiter;
070        readSourceFile();
071    }
072
073    public String getDelimiter() {
074        return delimiter;
075    }
076
077    // Implementation methods
078    //-------------------------------------------------------------------------
079
080    private void readSourceFile() throws IOException {
081        List<Object> bodies = new LinkedList<>();
082        try (Scanner scanner = new Scanner(sourceFile, null, delimiter)) {
083            while (scanner.hasNext()) {
084                String nextPayload = scanner.next();
085                if ((nextPayload != null)  &&  (nextPayload.length() > 0)) {
086                    bodies.add(nextPayload);
087                }
088            }
089            setDefaultBodies(bodies);
090        }
091    }
092}