1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.myfaces.renderkit.html.util;
20
21 import javax.servlet.ServletContext;
22 import java.io.IOException;
23 import java.io.InputStream;
24
25 /**
26 * A class which can provide the resource itself
27 *
28 * @author imario (latest modification by $Author: skitching $)
29 * @version $Revision: 673833 $ $Date: 2008-07-03 16:58:05 -0500 (Thu, 03 Jul 2008) $
30 */
31 public interface ResourceProvider
32 {
33 /**
34 * check if the resource exists
35 */
36 public boolean exists(ServletContext context, String resource);
37
38 /**
39 * get the content length of the resource
40 */
41 public int getContentLength(ServletContext context, String resource) throws IOException;
42
43 /**
44 * get the last modified time of the resource
45 */
46 public long getLastModified(ServletContext context, String resource) throws IOException;
47
48 /**
49 * get the input stream of the resource
50 */
51 public InputStream getInputStream(ServletContext context, String resource) throws IOException;
52
53 /**
54 * get resource encoding
55 */
56 public String getEncoding(ServletContext context, String resource) throws IOException;
57 }