Source Code Cross Referenced for NamedPipeSocketFactory.java in  » Database-JDBC-Connection-Pool » mysql-connector-java-5.1.3 » com » mysql » jdbc » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database JDBC Connection Pool » mysql connector java 5.1.3 » com.mysql.jdbc 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         Copyright (C) 2002-2004 MySQL AB
003:
004:         This program is free software; you can redistribute it and/or modify
005:         it under the terms of version 2 of the GNU General Public License as 
006:         published by the Free Software Foundation.
007:
008:         There are special exceptions to the terms and conditions of the GPL 
009:         as it is applied to this software. View the full text of the 
010:         exception in file EXCEPTIONS-CONNECTOR-J in the directory of this 
011:         software distribution.
012:
013:         This program is distributed in the hope that it will be useful,
014:         but WITHOUT ANY WARRANTY; without even the implied warranty of
015:         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
016:         GNU General Public License for more details.
017:
018:         You should have received a copy of the GNU General Public License
019:         along with this program; if not, write to the Free Software
020:         Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
021:
022:
023:
024:         */
025:        package com.mysql.jdbc;
026:
027:        import java.io.IOException;
028:        import java.io.InputStream;
029:        import java.io.OutputStream;
030:        import java.io.RandomAccessFile;
031:
032:        import java.net.Socket;
033:        import java.net.SocketException;
034:
035:        import java.util.Properties;
036:
037:        /**
038:         * A socket factory for named pipes (on Windows)
039:         * 
040:         * @author Mark Matthews
041:         */
042:        public class NamedPipeSocketFactory implements  SocketFactory {
043:            /**
044:             * A socket that encapsulates named pipes on Windows
045:             */
046:            class NamedPipeSocket extends Socket {
047:                private boolean isClosed = false;
048:
049:                private RandomAccessFile namedPipeFile;
050:
051:                NamedPipeSocket(String filePath) throws IOException {
052:                    if ((filePath == null) || (filePath.length() == 0)) {
053:                        throw new IOException(Messages
054:                                .getString("NamedPipeSocketFactory.4")); //$NON-NLS-1$
055:                    }
056:
057:                    this .namedPipeFile = new RandomAccessFile(filePath, "rw"); //$NON-NLS-1$
058:                }
059:
060:                /**
061:                 * @see java.net.Socket#close()
062:                 */
063:                public synchronized void close() throws IOException {
064:                    this .namedPipeFile.close();
065:                    this .isClosed = true;
066:                }
067:
068:                /**
069:                 * @see java.net.Socket#getInputStream()
070:                 */
071:                public InputStream getInputStream() throws IOException {
072:                    return new RandomAccessFileInputStream(this .namedPipeFile);
073:                }
074:
075:                /**
076:                 * @see java.net.Socket#getOutputStream()
077:                 */
078:                public OutputStream getOutputStream() throws IOException {
079:                    return new RandomAccessFileOutputStream(this .namedPipeFile);
080:                }
081:
082:                /**
083:                 * @see java.net.Socket#isClosed()
084:                 */
085:                public boolean isClosed() {
086:                    return this .isClosed;
087:                }
088:            }
089:
090:            /**
091:             * Enables OutputStream-type functionality for a RandomAccessFile
092:             */
093:            class RandomAccessFileInputStream extends InputStream {
094:                RandomAccessFile raFile;
095:
096:                RandomAccessFileInputStream(RandomAccessFile file) {
097:                    this .raFile = file;
098:                }
099:
100:                /**
101:                 * @see java.io.InputStream#available()
102:                 */
103:                public int available() throws IOException {
104:                    return -1;
105:                }
106:
107:                /**
108:                 * @see java.io.InputStream#close()
109:                 */
110:                public void close() throws IOException {
111:                    this .raFile.close();
112:                }
113:
114:                /**
115:                 * @see java.io.InputStream#read()
116:                 */
117:                public int read() throws IOException {
118:                    return this .raFile.read();
119:                }
120:
121:                /**
122:                 * @see java.io.InputStream#read(byte[])
123:                 */
124:                public int read(byte[] b) throws IOException {
125:                    return this .raFile.read(b);
126:                }
127:
128:                /**
129:                 * @see java.io.InputStream#read(byte[], int, int)
130:                 */
131:                public int read(byte[] b, int off, int len) throws IOException {
132:                    return this .raFile.read(b, off, len);
133:                }
134:            }
135:
136:            /**
137:             * Enables OutputStream-type functionality for a RandomAccessFile
138:             */
139:            class RandomAccessFileOutputStream extends OutputStream {
140:                RandomAccessFile raFile;
141:
142:                RandomAccessFileOutputStream(RandomAccessFile file) {
143:                    this .raFile = file;
144:                }
145:
146:                /**
147:                 * @see java.io.OutputStream#close()
148:                 */
149:                public void close() throws IOException {
150:                    this .raFile.close();
151:                }
152:
153:                /**
154:                 * @see java.io.OutputStream#write(byte[])
155:                 */
156:                public void write(byte[] b) throws IOException {
157:                    this .raFile.write(b);
158:                }
159:
160:                /**
161:                 * @see java.io.OutputStream#write(byte[], int, int)
162:                 */
163:                public void write(byte[] b, int off, int len)
164:                        throws IOException {
165:                    this .raFile.write(b, off, len);
166:                }
167:
168:                /**
169:                 * @see java.io.OutputStream#write(int)
170:                 */
171:                public void write(int b) throws IOException {
172:                }
173:            }
174:
175:            private static final String NAMED_PIPE_PROP_NAME = "namedPipePath"; //$NON-NLS-1$
176:
177:            private Socket namedPipeSocket;
178:
179:            /**
180:             * Constructor for NamedPipeSocketFactory.
181:             */
182:            public NamedPipeSocketFactory() {
183:                super ();
184:            }
185:
186:            /**
187:             * @see com.mysql.jdbc.SocketFactory#afterHandshake()
188:             */
189:            public Socket afterHandshake() throws SocketException, IOException {
190:                return this .namedPipeSocket;
191:            }
192:
193:            /**
194:             * @see com.mysql.jdbc.SocketFactory#beforeHandshake()
195:             */
196:            public Socket beforeHandshake() throws SocketException, IOException {
197:                return this .namedPipeSocket;
198:            }
199:
200:            /**
201:             * @see com.mysql.jdbc.SocketFactory#connect(String, Properties)
202:             */
203:            public Socket connect(String host, int portNumber /* ignored */,
204:                    Properties props) throws SocketException, IOException {
205:                String namedPipePath = props.getProperty(NAMED_PIPE_PROP_NAME);
206:
207:                if (namedPipePath == null) {
208:                    namedPipePath = "\\\\.\\pipe\\MySQL"; //$NON-NLS-1$
209:                } else if (namedPipePath.length() == 0) {
210:                    throw new SocketException(Messages
211:                            .getString("NamedPipeSocketFactory.2") //$NON-NLS-1$
212:                            + NAMED_PIPE_PROP_NAME
213:                            + Messages.getString("NamedPipeSocketFactory.3")); //$NON-NLS-1$
214:                }
215:
216:                this .namedPipeSocket = new NamedPipeSocket(namedPipePath);
217:
218:                return this.namedPipeSocket;
219:            }
220:        }
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