001/*
002 *  Copyright 2024 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.core.source;
017
018/**
019 * Interface to provide optional fallbacks for sources
020 */
021public interface OptionalSourceFallback
022{
023    /**
024     * Fallback to a default value if the uri is not supported
025     * @param uri The uri that is not supported
026     * @return The fallback url if any or null otherwise
027     */
028    public String fallback(String uri);
029}