NamedPipeSocketFactory.java
资源名称:bookshop.zip [点击查看]
上传用户:sxlinghang
上传日期:2022-07-20
资源大小:1405k
文件大小:6k
源码类别:
数据库编程
开发平台:
Java
- /*
- Copyright (C) 2002 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- package com.mysql.jdbc;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.OutputStream;
- import java.io.RandomAccessFile;
- import java.net.Socket;
- import java.net.SocketException;
- import java.util.Properties;
- /**
- * A socket factory for named pipes (on Windows)
- *
- * @author Mark Matthews
- */
- public class NamedPipeSocketFactory implements SocketFactory {
- private static final String NAMED_PIPE_PROP_NAME = "namedPipePath";
- private Socket namedPipeSocket;
- /**
- * Constructor for NamedPipeSocketFactory.
- */
- public NamedPipeSocketFactory() {
- super();
- }
- /**
- * @see com.mysql.jdbc.SocketFactory#afterHandshake()
- */
- public Socket afterHandshake() throws SocketException, IOException {
- return this.namedPipeSocket;
- }
- /**
- * @see com.mysql.jdbc.SocketFactory#beforeHandshake()
- */
- public Socket beforeHandshake() throws SocketException, IOException {
- return this.namedPipeSocket;
- }
- /**
- * @see com.mysql.jdbc.SocketFactory#connect(String, Properties)
- */
- public Socket connect(String host, Properties props)
- throws SocketException, IOException {
- String namedPipePath = props.getProperty(NAMED_PIPE_PROP_NAME);
- if (namedPipePath == null) {
- namedPipePath = "\\.\pipe\MySQL";
- } else if (namedPipePath.length() == 0) {
- throw new SocketException(
- "Can not specify NULL or empty value for property '"
- + NAMED_PIPE_PROP_NAME + "'.");
- }
- this.namedPipeSocket = new NamedPipeSocket(namedPipePath);
- return this.namedPipeSocket;
- }
- /**
- * A socket that encapsulates named pipes on Windows
- */
- class NamedPipeSocket extends Socket {
- private RandomAccessFile namedPipeFile;
- private boolean isClosed = false;
- NamedPipeSocket(String filePath) throws IOException {
- if ((filePath == null) || (filePath.length() == 0)) {
- throw new IOException(
- "Named pipe path can not be null or empty");
- }
- this.namedPipeFile = new RandomAccessFile(filePath, "rw");
- }
- /**
- * @see java.net.Socket#isClosed()
- */
- public boolean isClosed() {
- return this.isClosed;
- }
- /**
- * @see java.net.Socket#getInputStream()
- */
- public InputStream getInputStream() throws IOException {
- return new RandomAccessFileInputStream(this.namedPipeFile);
- }
- /**
- * @see java.net.Socket#getOutputStream()
- */
- public OutputStream getOutputStream() throws IOException {
- return new RandomAccessFileOutputStream(this.namedPipeFile);
- }
- /**
- * @see java.net.Socket#close()
- */
- public synchronized void close() throws IOException {
- this.namedPipeFile.close();
- this.isClosed = true;
- }
- }
- /**
- * Enables OutputStream-type functionality for a RandomAccessFile
- */
- class RandomAccessFileInputStream extends InputStream {
- RandomAccessFile raFile;
- RandomAccessFileInputStream(RandomAccessFile file) {
- this.raFile = file;
- }
- /**
- * @see java.io.InputStream#available()
- */
- public int available() throws IOException {
- return -1;
- }
- /**
- * @see java.io.InputStream#close()
- */
- public void close() throws IOException {
- this.raFile.close();
- }
- /**
- * @see java.io.InputStream#read()
- */
- public int read() throws IOException {
- return this.raFile.read();
- }
- /**
- * @see java.io.InputStream#read(byte[], int, int)
- */
- public int read(byte[] b, int off, int len) throws IOException {
- return this.raFile.read(b, off, len);
- }
- /**
- * @see java.io.InputStream#read(byte[])
- */
- public int read(byte[] b) throws IOException {
- return this.raFile.read(b);
- }
- }
- /**
- * Enables OutputStream-type functionality for a RandomAccessFile
- */
- class RandomAccessFileOutputStream extends OutputStream {
- RandomAccessFile raFile;
- RandomAccessFileOutputStream(RandomAccessFile file) {
- this.raFile = file;
- }
- /**
- * @see java.io.OutputStream#close()
- */
- public void close() throws IOException {
- this.raFile.close();
- }
- /**
- * @see java.io.OutputStream#write(byte[], int, int)
- */
- public void write(byte[] b, int off, int len) throws IOException {
- this.raFile.write(b, off, len);
- }
- /**
- * @see java.io.OutputStream#write(byte[])
- */
- public void write(byte[] b) throws IOException {
- this.raFile.write(b);
- }
- /**
- * @see java.io.OutputStream#write(int)
- */
- public void write(int b) throws IOException {
- }
- }
- }