001// Copyright 2009, 2010 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry5.internal.services; 016 017import java.io.IOException; 018 019import org.apache.tapestry5.ioc.Resource; 020 021/** 022 * Responsible for converting a path into a {@link org.apache.tapestry5.ioc.Resource} that can be 023 * {@linkplain org.apache.tapestry5.internal.services.ResourceStreamer 024 * streamed to the client}. The path is on the classpath, but may have been changed to include a checksum (in 025 * certain cases). 026 * 027 * @since 5.1.0.2 028 */ 029public interface AssetResourceLocator 030{ 031 /** 032 * For a complete classpath path, returns the Resource for the path. This include checking for a 033 * digest for protected files. 034 * 035 * @return 036 * resource corresponding to path (may be for a non-existent resource), or null if path is invalid (i.e., 037 * incorrect digest) 038 */ 039 Resource findClasspathResourceForPath(String path) throws IOException; 040}