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1 package org.sapia.resource;
2
3 import java.io.FileNotFoundException  ;
4 import java.io.IOException ;
5 import java.io.InputStream ;
6 import java.net.URI ;
7 import java.net.URL ;
8
9
16 public class UrlResource implements Resource {
17 static final long UNDEFINED = -1;
18 private URL _url;
19
20 public UrlResource(URL url) {
21 _url = url;
22 }
23
24 public long lastModified() {
25 return UNDEFINED;
26 }
27
28 public InputStream getInputStream() throws IOException {
29 try{
30 return _url.openStream();
31 }catch(FileNotFoundException e){
32 throw new ResourceNotFoundException(e.getMessage());
33 }
34 }
35
36 public String getURI() {
37 return _url.toExternalForm();
38 }
39
40 public String toString() {
41 return _url.toExternalForm();
42 }
43
44 public Resource getRelative(String uri) throws IOException {
45 URI u = Utils.toURIObject(uri);
46 if(u.isAbsolute()){
47 throw new IOException ("URI is absolute: " + uri + "; must be relative");
48 }
49 if(_url != null){
50 return new UrlResource(new URL (Utils.getRelativePath(_url.toExternalForm(), uri, true)));
51 }
52 else{
53 return new UrlResource(new URL (uri));
54 }
55 }
56
57 }
58 |
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