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.commons.transaction.file;
018
019/**
020 * Maps transaction ids to paths and back.
021 * 
022 * @version $Id: TransactionIdToPathMapper.java 493632 2007-01-07 01:57:31Z joerg $
023 * @since 1.2
024 */
025public interface TransactionIdToPathMapper {
026
027    /**
028     * Maps the transaction id object to a path string. 
029     * 
030     * @param txId the transaction id
031     * @return the path string
032     */
033    String getPathForId(Object txId);
034    
035    /**
036     * Maps the path string to a transaction id object. 
037     * 
038     * @param path the path
039     * @return the path string
040     */
041    Object getIdForPath(String path);
042    
043}