Source Code Cross Referenced for PDAXWriter.java in  » Workflow-Engines » pegasus-2.1.0 » org » griphyn » cPlanner » partitioner » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » pegasus 2.1.0 » org.griphyn.cPlanner.partitioner 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * This file or a portion of this file is licensed under the terms of
003:         * the Globus Toolkit Public License, found in file GTPL, or at
004:         * http://www.globus.org/toolkit/download/license.html. This notice must
005:         * appear in redistributions of this file, with or without modification.
006:         *
007:         * Redistributions of this Software, with or without modification, must
008:         * reproduce the GTPL in: (1) the Software, or (2) the Documentation or
009:         * some other similar material which is provided with the Software (if
010:         * any).
011:         *
012:         * Copyright 1999-2004 University of Chicago and The University of
013:         * Southern California. All rights reserved.
014:         */
015:        package org.griphyn.cPlanner.partitioner;
016:
017:        import java.io.BufferedWriter;
018:        import java.io.File;
019:        import java.io.FileWriter;
020:        import java.io.IOException;
021:        import java.io.PrintWriter;
022:
023:        import org.griphyn.cPlanner.common.LogManager;
024:
025:        /**
026:         * It writes out the partition graph in xml form.
027:         *
028:         * @author Karan Vahi
029:         * @version $Revision: 124 $
030:         */
031:        public class PDAXWriter {
032:
033:            /**
034:             * The version of the associated xml schema, to which the pdax files being
035:             * written conform to.
036:             */
037:            public static final String XML_VERSION = "2.0";
038:
039:            public static final String XML_NAMESPACE = "http://pegasus.isi.edu/schema";
040:
041:            /**
042:             * The write handle to the xml file being written.
043:             */
044:            private PrintWriter mWriteHandle;
045:
046:            /**
047:             * The handle to the logging object.
048:             */
049:            private LogManager mLogger;
050:
051:            /**
052:             * The name assigned to the pdax file being written.
053:             */
054:            private String mName;
055:
056:            /**
057:             * The fully qaulified path to the file being written.
058:             */
059:            private String mFileName;
060:
061:            /**
062:             * The overloaded constructor.
063:             *
064:             * @param name      the name that is assigned to the pdax.
065:             * @param fileName  the path to the xml file that has to be written.
066:             */
067:            public PDAXWriter(String name, String fileName) {
068:                mLogger = LogManager.getInstance();
069:                mFileName = fileName;
070:                mName = name;
071:
072:                try {
073:                    mWriteHandle = new PrintWriter(new BufferedWriter(
074:                            new FileWriter(fileName)));
075:                } catch (IOException e) {
076:                    throw new RuntimeException("Unable to write to file "
077:                            + fileName + " :", e);
078:                }
079:            }
080:
081:            /**
082:             * Writes out the opening element of the xml document.
083:             */
084:            public void writeHeader() {
085:                String name = new File(mFileName).getName();
086:
087:                writeln("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
088:                writeln("<!-- generated: " + mLogger.getTimeStamp() + "-->");
089:                writeln("<pdag xmlns=\""
090:                        + XML_NAMESPACE
091:                        + "/PDAX\""
092:                        + " xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\""
093:                        + " xsi:schemaLocation=\"" + XML_NAMESPACE + "/PDAX "
094:                        + XML_NAMESPACE + "/pdax-" + XML_VERSION + ".xsd\" "
095:                        + "name=\"" + mName + "\" " + "index=\"0\" count=\"1\""
096:                        + " version=\"" + XML_VERSION + "\" " + ">");
097:
098:            }
099:
100:            /**
101:             * Writes out a partition to the associate XML stream.
102:             *
103:             * @param p  the partition to be written to the stream.
104:             *
105:             * @exception IOException if something fishy happens to the stream.
106:             */
107:            public void write(Partition p) throws IOException {
108:                p.toXML(mWriteHandle);
109:            }
110:
111:            /**
112:             * Writes out to the file.
113:             * @param st String
114:             */
115:            public void write(String st) {
116:                mWriteHandle.write(st);
117:            }
118:
119:            /**
120:             * Writes out to the file.
121:             * @param st String
122:             */
123:            public void writeln(String st) {
124:                mWriteHandle.println(st);
125:            }
126:
127:            /**
128:             * Close the xml file that is written.
129:             */
130:            public void close() {
131:                write("\n</pdag>");
132:                mWriteHandle.close();
133:            }
134:        }
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