| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.configuration2.io; |
| |
| import java.io.File; |
| import java.net.URL; |
| |
| import org.apache.commons.lang3.StringUtils; |
| |
| /** |
| * <p> |
| * A specialized implementation of {@code FileLocationStrategy} which tries to |
| * construct a file path from the locator's base path and file name. |
| * </p> |
| * <p> |
| * This strategies ignores the URL stored in the passed in {@link FileLocator}. |
| * It generates a path by concatenating the base path (if present) and the file |
| * name. If the resulting path points to a valid file, the corresponding URL is |
| * returned. |
| * </p> |
| * |
| * @version $Id$ |
| * @since 2.0 |
| */ |
| public class BasePathLocationStrategy implements FileLocationStrategy |
| { |
| /** |
| * {@inheritDoc} This implementation uses utility methods from |
| * {@code FileLocatorUtils} to generate a {@code File} from the locator's |
| * base path and file name. If this {@code File} exists, its URL is |
| * returned. |
| */ |
| @Override |
| public URL locate(FileSystem fileSystem, FileLocator locator) |
| { |
| if (StringUtils.isNotEmpty(locator.getFileName())) |
| { |
| File file = |
| FileLocatorUtils.constructFile(locator.getBasePath(), |
| locator.getFileName()); |
| if (file.isFile()) |
| { |
| return FileLocatorUtils.convertFileToURL(file); |
| } |
| } |
| |
| return null; |
| } |
| } |