156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson/* 256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Copyright (C) 2010 Google Inc. 356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Licensed under the Apache License, Version 2.0 (the "License"); 556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * you may not use this file except in compliance with the License. 656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * You may obtain a copy of the License at 756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * http://www.apache.org/licenses/LICENSE-2.0 956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 1056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Unless required by applicable law or agreed to in writing, software 1156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * distributed under the License is distributed on an "AS IS" BASIS, 1256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * See the License for the specific language governing permissions and 1456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * limitations under the License. 1556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson */ 1656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 1756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonpackage com.google.clearsilver.jsilver.resourceloader; 1856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 1956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonimport java.io.IOException; 2056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonimport java.io.Reader; 2156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 2256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson/** 2356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Implementations of ResourceLoader should extend this class rather than directly implement the 2456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * ResourceLoader interface - this allows changes to be made to the ResourceLoader interface whilst 2556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * retaining backwards compatibility with existing implementations. 2656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 2756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * @see ResourceLoader 2856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson */ 2956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonpublic abstract class BaseResourceLoader implements ResourceLoader { 3056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 3156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson @Override 3256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public void close(Reader reader) throws IOException { 3356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson reader.close(); 3456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 3556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 3656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson /** 3756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Default implementation returns the filename as the ResourceLoaders that subclass this class 3856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * tend to assume they are the only ResourceLoader in use. Or at least that the filename is the 3956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * only necessary form of uniqueness between two instances of this same ResourceLoader. 4056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson */ 4156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson @Override 4256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public Object getKey(String filename) { 4356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson return filename; 4456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 4556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 4656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson /** 4756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Default implementation does not check whether the resource has changed. 4856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson */ 4956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson @Override 5056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public Object getResourceVersionId(String filename) { 5156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson return filename; 5256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 5356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson} 54