1 /* 2 * Copyright 2013 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.jimfs; 18 19 import static com.google.common.base.Preconditions.checkNotNull; 20 21 import java.io.IOException; 22 import java.nio.file.attribute.FileAttributeView; 23 24 /** 25 * Abstract base class for {@link FileAttributeView} implementations. 26 * 27 * @author Colin Decker 28 */ 29 abstract class AbstractAttributeView implements FileAttributeView { 30 31 private final FileLookup lookup; 32 AbstractAttributeView(FileLookup lookup)33 protected AbstractAttributeView(FileLookup lookup) { 34 this.lookup = checkNotNull(lookup); 35 } 36 37 /** Looks up the file to get or set attributes on. */ lookupFile()38 protected final File lookupFile() throws IOException { 39 return lookup.lookup(); 40 } 41 } 42