Source Code Cross Referenced for SVNInputStream.java in  » Source-Control » tmatesoft-SVN » org » tigris » subversion » javahl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Source Control » tmatesoft SVN » org.tigris.subversion.javahl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * @copyright
003:         * ====================================================================
004:         * Copyright (c) 2003 CollabNet.  All rights reserved.
005:         *
006:         * This software is licensed as described in the file COPYING, which
007:         * you should have received as part of this distribution.  The terms
008:         * are also available at http://subversion.tigris.org/license-1.html.
009:         * If newer versions of this license are posted there, you may use a
010:         * newer version instead, at your option.
011:         *
012:         * This software consists of voluntary contributions made by many
013:         * individuals.  For exact contribution history, see the revision
014:         * history and logs, available at http://subversion.tigris.org/.
015:         * ====================================================================
016:         * @endcopyright
017:         */package org.tigris.subversion.javahl;
018:
019:        import java.io.IOException;
020:        import java.io.PipedInputStream;
021:        import java.io.PipedOutputStream;
022:
023:        /**
024:         * This class connects a java.io.PipedInputStream to a OutputInterface.
025:         * The outherside of the Pipe must read by another thread, or deadlocks
026:         * will occure
027:         */
028:        public class SVNInputStream extends PipedInputStream {
029:            /**
030:             * my connection to put data into subversion
031:             */
032:            Outputer myOutputer;
033:
034:            /**
035:             * Creates a SVNInputStream so that it is connected with an internal
036:             * PipedOutputStream
037:             * @throws IOException
038:             */
039:            public SVNInputStream() throws IOException {
040:                myOutputer = new Outputer(this );
041:            }
042:
043:            /**
044:             * Get the Interface to connect to SVNAdmin
045:             * @return the connetion interface
046:             */
047:            public OutputInterface getOutputer() {
048:                return myOutputer;
049:            }
050:
051:            /**
052:             * Closes this input stream and releases any system resources associated
053:             * with the stream.
054:             *
055:             * <p> The <code>close</code> method of <code>InputStream</code> does
056:             * nothing.
057:             *
058:             * @exception  IOException  if an I/O error occurs.
059:             */
060:            public void close() throws IOException {
061:                myOutputer.closed = true;
062:                super .close();
063:            }
064:
065:            /**
066:             * this class implements the connection to SVNAdmin
067:             */
068:            public class Outputer implements  OutputInterface {
069:                /**
070:                 * my side of the pipe
071:                 */
072:                PipedOutputStream myStream;
073:                /**
074:                 * flag that the other side of the pipe has been closed
075:                 */
076:                boolean closed;
077:
078:                /**
079:                 * build a new connection object
080:                 * @param myMaster  the other side of the pipe
081:                 * @throws IOException
082:                 */
083:                Outputer(SVNInputStream myMaster) throws IOException {
084:                    myStream = new PipedOutputStream(myMaster);
085:                }
086:
087:                /**
088:                 * write the bytes in data to java
089:                 * @param data          the data to be writtem
090:                 * @throws IOException  throw in case of problems.
091:                 */
092:                public int write(byte[] data) throws IOException {
093:                    if (closed)
094:                        throw new IOException("stream has been closed");
095:                    myStream.write(data);
096:                    return data.length;
097:                }
098:
099:                /**
100:                 * close the output
101:                 * @throws IOException throw in case of problems.
102:                 */
103:                public void close() throws IOException {
104:                    myStream.close();
105:                }
106:            }
107:        }
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