1 /*
2 * $Source$
3 * $Revision$
4 *
5 * Copyright (C) 2000 Tim Joyce
6 *
7 * Part of Melati (http://melati.org), a framework for the rapid
8 * development of clean, maintainable web applications.
9 *
10 * Melati is free software; Permission is granted to copy, distribute
11 * and/or modify this software under the terms either:
12 *
13 * a) the GNU General Public License as published by the Free Software
14 * Foundation; either version 2 of the License, or (at your option)
15 * any later version,
16 *
17 * or
18 *
19 * b) any version of the Melati Software License, as published
20 * at http://melati.org
21 *
22 * You should have received a copy of the GNU General Public License and
23 * the Melati Software License along with this program;
24 * if not, write to the Free Software Foundation, Inc.,
25 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26 * GNU General Public License and visit http://melati.org to obtain the
27 * Melati Software License.
28 *
29 * Feel free to contact the Developers of Melati (http://melati.org),
30 * if you would like to work out a different arrangement than the options
31 * outlined here. It is our intention to allow Melati to be used by as
32 * wide an audience as possible.
33 *
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
38 *
39 * Contact details for copyright holder:
40 *
41 * Tim Joyce <timj@paneris.org>
42 */
43
44 package org.melati.template.webmacro;
45
46 import java.io.IOException;
47 import java.io.OutputStream;
48 import java.io.UnsupportedEncodingException;
49
50 import javax.servlet.http.HttpServletResponse;
51
52 import org.melati.template.TemplateEngine;
53 import org.melati.template.TemplateIOException;
54 import org.melati.util.MelatiWriter;
55 import org.webmacro.Broker;
56
57 /**
58 * Writes to an output object.
59 */
60
61 public class MelatiFastWriter extends MelatiWriter
62 implements MelatiWebmacroWriter {
63
64 protected OutputStream outputStream;
65
66 /**
67 * Constructor.
68 */
69 public MelatiFastWriter(Broker broker, HttpServletResponse response)
70 throws IOException {
71 this(broker, response.getOutputStream(), response.getCharacterEncoding());
72 }
73 /**
74 * Constructor.
75 */
76 public MelatiFastWriter(Broker broker, OutputStream output, String encoding) {
77 // need to make this accessible to subclasses
78 outputStream = output;
79 try {
80 out = org.webmacro.FastWriter.getInstance(broker, output, encoding);
81 } catch (UnsupportedEncodingException e) {
82 throw new TemplateIOException(e);
83 }
84 }
85
86 /**
87 * Return a <code>FastWriter</code> that can be used for a while instead.
88 *
89 * @see #stopUsingFastWriter
90 */
91 public org.webmacro.FastWriter getFastWriter() {
92 // as we can write to the underlying peer, the Flusher may not get started
93 // so we should start it here
94 startFlushing();
95 return (org.webmacro.FastWriter)out;
96 }
97
98
99 /**
100 * Stop using the given <code>FastWriter</code> obtained from
101 * this object.
102 *
103 * @see #getFastWriter
104 */
105 public void stopUsingFastWriter(org.webmacro.FastWriter fw) {
106 // Do nothing
107 }
108
109
110 }