001/* 002 * Copyright 2002-2016 the original author or authors. 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 * https://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 */ 016 017package org.springframework.core.io; 018 019/** 020 * A resolution strategy for protocol-specific resource handles. 021 * 022 * <p>Used as an SPI for {@link DefaultResourceLoader}, allowing for 023 * custom protocols to be handled without subclassing the loader 024 * implementation (or application context implementation). 025 * 026 * @author Juergen Hoeller 027 * @since 4.3 028 * @see DefaultResourceLoader#addProtocolResolver 029 */ 030public interface ProtocolResolver { 031 032 /** 033 * Resolve the given location against the given resource loader 034 * if this implementation's protocol matches. 035 * @param location the user-specified resource location 036 * @param resourceLoader the associated resource loader 037 * @return a corresponding {@code Resource} handle if the given location 038 * matches this resolver's protocol, or {@code null} otherwise 039 */ 040 Resource resolve(String location, ResourceLoader resourceLoader); 041 042}