001: /*
002: * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/connector/ResponseFacade.java,v 1.6 2002/05/15 04:24:17 remm Exp $
003: * $Revision: 1.6 $
004: * $Date: 2002/05/15 04:24:17 $
005: *
006: * ====================================================================
007: *
008: * The Apache Software License, Version 1.1
009: *
010: * Copyright (c) 1999 The Apache Software Foundation. All rights
011: * reserved.
012: *
013: * Redistribution and use in source and binary forms, with or without
014: * modification, are permitted provided that the following conditions
015: * are met:
016: *
017: * 1. Redistributions of source code must retain the above copyright
018: * notice, this list of conditions and the following disclaimer.
019: *
020: * 2. Redistributions in binary form must reproduce the above copyright
021: * notice, this list of conditions and the following disclaimer in
022: * the documentation and/or other materials provided with the
023: * distribution.
024: *
025: * 3. The end-user documentation included with the redistribution, if
026: * any, must include the following acknowlegement:
027: * "This product includes software developed by the
028: * Apache Software Foundation (http://www.apache.org/)."
029: * Alternately, this acknowlegement may appear in the software itself,
030: * if and wherever such third-party acknowlegements normally appear.
031: *
032: * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
033: * Foundation" must not be used to endorse or promote products derived
034: * from this software without prior written permission. For written
035: * permission, please contact apache@apache.org.
036: *
037: * 5. Products derived from this software may not be called "Apache"
038: * nor may "Apache" appear in their names without prior written
039: * permission of the Apache Group.
040: *
041: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
042: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
043: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
044: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
045: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
046: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
047: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
048: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
049: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
050: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
051: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
052: * SUCH DAMAGE.
053: * ====================================================================
054: *
055: * This software consists of voluntary contributions made by many
056: * individuals on behalf of the Apache Software Foundation. For more
057: * information on the Apache Software Foundation, please see
058: * <http://www.apache.org/>.
059: *
060: * [Additional notices, if required by prior licensing conditions]
061: *
062: */
063:
064: package org.apache.catalina.connector;
065:
066: import java.io.IOException;
067: import java.io.OutputStream;
068: import java.io.PrintWriter;
069: import java.util.Locale;
070: import javax.servlet.ServletException;
071: import javax.servlet.ServletOutputStream;
072: import javax.servlet.ServletResponse;
073: import org.apache.catalina.Response;
074:
075: /**
076: * Facade class that wraps a Catalina-internal <b>Response</b>
077: * object. All methods are delegated to the wrapped response.
078: *
079: * @author Remy Maucherat
080: * @version $Revision: 1.6 $ $Date: 2002/05/15 04:24:17 $
081: */
082:
083: public class ResponseFacade implements ServletResponse {
084:
085: // ----------------------------------------------------------- Constructors
086:
087: /**
088: * Construct a wrapper for the specified response.
089: *
090: * @param response The response to be wrapped
091: */
092: public ResponseFacade(Response response) {
093: this .resp = response;
094: this .response = (ServletResponse) response;
095: }
096:
097: // ----------------------------------------------------- Instance Variables
098:
099: /**
100: * The wrapped response.
101: */
102: protected ServletResponse response = null;
103:
104: /**
105: * The wrapped response.
106: */
107: protected Response resp = null;
108:
109: // --------------------------------------------------------- Public Methods
110:
111: /**
112: * Clear facade.
113: */
114: public void clear() {
115: response = null;
116: resp = null;
117: }
118:
119: public void finish() {
120:
121: resp.setSuspended(true);
122:
123: }
124:
125: public boolean isFinished() {
126:
127: return resp.isSuspended();
128:
129: }
130:
131: // ------------------------------------------------ ServletResponse Methods
132:
133: public String getCharacterEncoding() {
134: return response.getCharacterEncoding();
135: }
136:
137: public ServletOutputStream getOutputStream() throws IOException {
138:
139: // if (isFinished())
140: // throw new IllegalStateException
141: // (/*sm.getString("responseFacade.finished")*/);
142:
143: ServletOutputStream sos = response.getOutputStream();
144: if (isFinished())
145: resp.setSuspended(true);
146: return (sos);
147:
148: }
149:
150: public PrintWriter getWriter() throws IOException {
151:
152: // if (isFinished())
153: // throw new IllegalStateException
154: // (/*sm.getString("responseFacade.finished")*/);
155:
156: PrintWriter writer = response.getWriter();
157: if (isFinished())
158: resp.setSuspended(true);
159: return (writer);
160:
161: }
162:
163: public void setContentLength(int len) {
164:
165: if (isCommitted())
166: return;
167:
168: response.setContentLength(len);
169:
170: }
171:
172: public void setContentType(String type) {
173:
174: if (isCommitted())
175: return;
176:
177: response.setContentType(type);
178:
179: }
180:
181: public void setBufferSize(int size) {
182:
183: if (isCommitted())
184: throw new IllegalStateException(/*sm.getString("responseBase.reset.ise")*/);
185:
186: response.setBufferSize(size);
187:
188: }
189:
190: public int getBufferSize() {
191: return response.getBufferSize();
192: }
193:
194: public void flushBuffer() throws IOException {
195:
196: if (isFinished())
197: // throw new IllegalStateException
198: // (/*sm.getString("responseFacade.finished")*/);
199: return;
200:
201: resp.setAppCommitted(true);
202:
203: response.flushBuffer();
204:
205: }
206:
207: public void resetBuffer() {
208:
209: if (isCommitted())
210: throw new IllegalStateException(/*sm.getString("responseBase.reset.ise")*/);
211:
212: response.resetBuffer();
213:
214: }
215:
216: public boolean isCommitted() {
217: return (resp.isAppCommitted());
218: }
219:
220: public void reset() {
221:
222: if (isCommitted())
223: throw new IllegalStateException(/*sm.getString("responseBase.reset.ise")*/);
224:
225: response.reset();
226:
227: }
228:
229: public void setLocale(Locale loc) {
230:
231: if (isCommitted())
232: return;
233:
234: response.setLocale(loc);
235: }
236:
237: public Locale getLocale() {
238: return response.getLocale();
239: }
240:
241: }
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