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.scxml2;
018
019/**
020 * Interface for a component that may be used by the SCXML engines
021 * to resolve context sensitive paths.
022 *
023 */
024public interface PathResolver {
025
026    /**
027     * Resolve this context sensitive path to an absolute URL.
028     *
029     * @param ctxPath Context sensitive path, can be a relative URL
030     * @return Resolved path (an absolute URL) or <code>null</code>
031     */
032    String resolvePath(String ctxPath);
033
034    /**
035     * Get a PathResolver rooted at this context sensitive path.
036     *
037     * @param ctxPath Context sensitive path, can be a relative URL
038     * @return Returns a new resolver rooted at ctxPath
039     */
040    PathResolver getResolver(String ctxPath);
041
042}
043