| /** |
| * |
| * Copyright 2003-2004 The Apache Software Foundation |
| * |
| * Licensed 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 javax.activation; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.net.URL; |
| import java.net.URLConnection; |
| |
| /** |
| * @version $Rev$ $Date$ |
| */ |
| public class URLDataSource implements DataSource { |
| private final static String DEFAULT_CONTENT_TYPE = "application/octet-stream"; |
| |
| private final URL url; |
| |
| /** |
| * Creates a URLDataSource from a URL object. |
| */ |
| public URLDataSource(URL url) { |
| this.url = url; |
| } |
| |
| /** |
| * Returns the value of the URL content-type header field. |
| * This method calls URL.openConnection() to obtain a connection |
| * from which to obtain the content type. If this fails or |
| * a getContentType() returns null then "application/octet-stream" |
| * is returned. |
| */ |
| public String getContentType() { |
| try { |
| URLConnection connection = url.openConnection(); |
| String type = connection.getContentType(); |
| return type == null ? DEFAULT_CONTENT_TYPE : type; |
| } catch (IOException e) { |
| return DEFAULT_CONTENT_TYPE; |
| } |
| } |
| |
| /** |
| * Returns the file name of the URL object. |
| * @return the name as returned by URL.getFile() |
| */ |
| public String getName() { |
| return url.getFile(); |
| } |
| |
| /** |
| * Returns an InputStream obtained from the URL. |
| * @return the InputStream from URL.openStream() |
| */ |
| public InputStream getInputStream() throws IOException { |
| return url.openStream(); |
| } |
| |
| /** |
| * Returns an OutputStream obtained from the URL. |
| */ |
| public OutputStream getOutputStream() throws IOException { |
| URLConnection connection = url.openConnection(); |
| connection.setDoOutput(true); |
| return connection.getOutputStream(); |
| } |
| |
| /** |
| * Returns the URL of the data source. |
| */ |
| public URL getURL() { |
| return url; |
| } |
| } |