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.Map;
020
021 import org.apache.camel.Expression;
022 import org.apache.camel.component.file.FileProcessStrategy;
023
024 /**
025 * Factory to provide the {@link org.apache.camel.component.file.FileProcessStrategy} to use.
026 */
027 public final class FileProcessStrategyFactory {
028
029 private FileProcessStrategyFactory() {
030 // Factory class
031 }
032
033 /**
034 * A strategy method to lazily create the file strategy to use.
035 */
036 public static FileProcessStrategy createFileProcessStrategy(Map<String, Object> params) {
037
038 // We assume a value is present only if its value not null for String and 'true' for boolean
039 boolean isDelete = params.get("delete") != null;
040 boolean isLock = params.get("lock") != null;
041 String moveNamePrefix = (String) params.get("moveNamePrefix");
042 String moveNamePostfix = (String) params.get("moveNamePostfix");
043 String preMoveNamePrefix = (String) params.get("preMoveNamePrefix");
044 String preMoveNamePostfix = (String) params.get("preMoveNamePostfix");
045 Expression expression = (Expression) params.get("expression");
046 Expression preMoveExpression = (Expression) params.get("preMoveExpression");
047 boolean move = moveNamePrefix != null || moveNamePostfix != null;
048 boolean preMove = preMoveNamePrefix != null || preMoveNamePostfix != null;
049
050 if (params.containsKey("noop")) {
051 return new NoOpFileProcessStrategy(isLock);
052 } else if (move || preMove) {
053 RenameFileProcessStrategy strategy = new RenameFileProcessStrategy(isLock);
054 if (move) {
055 strategy.setCommitRenamer(new DefaultFileRenamer(moveNamePrefix, moveNamePostfix));
056 }
057 if (preMove) {
058 strategy.setBeginRenamer(new DefaultFileRenamer(preMoveNamePrefix, preMoveNamePostfix));
059 }
060 return strategy;
061 } else if (expression != null || preMoveExpression != null) {
062 RenameFileProcessStrategy strategy = new RenameFileProcessStrategy(isLock);
063 if (expression != null) {
064 FileExpressionRenamer renamer = new FileExpressionRenamer();
065 renamer.setExpression(expression);
066 strategy.setCommitRenamer(renamer);
067 }
068 if (preMoveExpression != null) {
069 FileExpressionRenamer renamer = new FileExpressionRenamer();
070 renamer.setExpression(preMoveExpression);
071 strategy.setBeginRenamer(renamer);
072 }
073 return strategy;
074 } else if (isDelete) {
075 return new DeleteFileProcessStrategy(isLock);
076 } else {
077 // default strategy will move to .camel subfolder
078 return new RenameFileProcessStrategy(isLock);
079 }
080 }
081 }