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1
24 package org.jresearch.gossip.filters.cache;
25
26 import java.io.IOException  ;
27 import java.io.OutputStream ;
28
29 import javax.servlet.ServletOutputStream ;
30 import javax.servlet.http.HttpServletResponse ;
31
32 public class CacheResponseStream extends ServletOutputStream {
33
34 protected boolean closed = false;
35
36 protected HttpServletResponse response = null;
37
38 protected ServletOutputStream output = null;
39
40 protected OutputStream cache = null;
41
42 public CacheResponseStream(HttpServletResponse response, OutputStream cache)
43 throws IOException {
44 super();
45 closed = false;
46 this.response = response;
47 this.cache = cache;
48 }
49
50 public void close() throws IOException {
51 if (closed) {
52 throw new IOException ("This output stream has already been closed");
53 }
54 cache.close();
55 closed = true;
56 }
57
58 public void flush() throws IOException {
59 if (closed) {
60 throw new IOException ("Cannot flush a closed output stream");
61 }
62 cache.flush();
63 }
64
65 public void write(int b) throws IOException {
66 if (closed) {
67 throw new IOException ("Cannot write to a closed output stream");
68 }
69 cache.write((byte) b);
70 }
71
72 public void write(byte b[]) throws IOException {
73 write(b, 0, b.length);
74 }
75
76 public void write(byte b[], int off, int len) throws IOException {
77 if (closed) {
78 throw new IOException ("Cannot write to a closed output stream");
79 }
80 cache.write(b, off, len);
81 }
82
83 public boolean closed() {
84 return (this.closed);
85 }
86
87 public void reset() {
88 }
90 } |
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