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.strategy;
018    
019    import java.util.Properties;
020    
021    import org.apache.camel.component.file.FileProcessStrategy;
022    
023    /**
024     * Factory to provide the {@link org.apache.camel.component.file.FileProcessStrategy} to use.
025     */
026    public final class FileProcessStrategyFactory {
027    
028        private FileProcessStrategyFactory() {
029            // Factory class
030        }
031    
032        /**
033         * A strategy method to lazily create the file strategy to use.
034         */
035        public static FileProcessStrategy createFileProcessStrategy(Properties params) {
036    
037            // We assume a value is present only if its value not null for String and 'true' for boolean
038            boolean isDelete = params.getProperty("delete") != null;
039            boolean isLock = params.getProperty("lock") != null;
040            String moveNamePrefix = params.getProperty("moveNamePrefix");
041            String moveNamePostfix = params.getProperty("moveNamePostfix");
042    
043            if (params.getProperty("noop") != null) {
044                return new NoOpFileProcessStrategy(isLock);
045            } else if (moveNamePostfix != null || moveNamePrefix != null) {
046                if (isDelete) {
047                    throw new IllegalArgumentException("You cannot set the deleteFiles property "
048                        + "and a moveFilenamePostfix or moveFilenamePrefix");
049                }
050                return new RenameFileProcessStrategy(isLock, moveNamePrefix, moveNamePostfix);
051            } else if (isDelete) {
052                return new DeleteFileProcessStrategy(isLock);
053            } else {
054                return new RenameFileProcessStrategy(isLock);
055            }
056        }
057    }