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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| SplitServletOutputStream.java | - | 0% | 0% | 0% |
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| 1 | /* | |
| 2 | * Copyright (c) 2002-2003 by OpenSymphony | |
| 3 | * All rights reserved. | |
| 4 | */ | |
| 5 | package com.opensymphony.oscache.web.filter; | |
| 6 | ||
| 7 | import java.io.IOException; | |
| 8 | import java.io.OutputStream; | |
| 9 | ||
| 10 | import javax.servlet.ServletOutputStream; | |
| 11 | ||
| 12 | /** | |
| 13 | * Extends the base <code>ServletOutputStream</code> class so that | |
| 14 | * the stream can be captured as it gets written. This is achieved | |
| 15 | * by overriding the <code>write()</code> methods and outputting | |
| 16 | * the data to two streams - the original stream and a secondary stream | |
| 17 | * that is designed to capture the written data. | |
| 18 | * | |
| 19 | * @version $Revision: 1.1 $ | |
| 20 | * @author <a href="mailto:sergek@lokitech.com">Serge Knystautas</a> | |
| 21 | */ | |
| 22 | public class SplitServletOutputStream extends ServletOutputStream { | |
| 23 | OutputStream captureStream = null; | |
| 24 | OutputStream passThroughStream = null; | |
| 25 | ||
| 26 | /** | |
| 27 | * Constructs a split output stream that both captures and passes through | |
| 28 | * the servlet response. | |
| 29 | * | |
| 30 | * @param captureStream The stream that will be used to capture the data. | |
| 31 | * @param passThroughStream The pass-through <code>ServletOutputStream</code> | |
| 32 | * that will write the response to the client as originally intended. | |
| 33 | */ | |
| 34 | 0 | public SplitServletOutputStream(OutputStream captureStream, OutputStream passThroughStream) { |
| 35 | 0 | this.captureStream = captureStream; |
| 36 | 0 | this.passThroughStream = passThroughStream; |
| 37 | } | |
| 38 | ||
| 39 | /** | |
| 40 | * Writes the incoming data to both the output streams. | |
| 41 | * | |
| 42 | * @param value The int data to write. | |
| 43 | * @throws IOException | |
| 44 | */ | |
| 45 | 0 | public void write(int value) throws IOException { |
| 46 | 0 | captureStream.write(value); |
| 47 | 0 | passThroughStream.write(value); |
| 48 | } | |
| 49 | ||
| 50 | /** | |
| 51 | * Writes the incoming data to both the output streams. | |
| 52 | * | |
| 53 | * @param value The bytes to write to the streams. | |
| 54 | * @throws IOException | |
| 55 | */ | |
| 56 | 0 | public void write(byte[] value) throws IOException { |
| 57 | 0 | captureStream.write(value); |
| 58 | 0 | passThroughStream.write(value); |
| 59 | } | |
| 60 | ||
| 61 | /** | |
| 62 | * Writes the incoming data to both the output streams. | |
| 63 | * | |
| 64 | * @param b The bytes to write out to the streams. | |
| 65 | * @param off The offset into the byte data where writing should begin. | |
| 66 | * @param len The number of bytes to write. | |
| 67 | * @throws IOException | |
| 68 | */ | |
| 69 | 0 | public void write(byte[] b, int off, int len) throws IOException { |
| 70 | 0 | captureStream.write(b, off, len); |
| 71 | 0 | passThroughStream.write(b, off, len); |
| 72 | } | |
| 73 | } |
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