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The Waikato Environment for Knowledge Analysis (WEKA), a machine learning workbench. This version represents the developer version, the "bleeding edge" of development, you could say. New functionality gets added to this version.

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/*
 *   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 3 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, see .
 */

/*
 *    SerializedInstancesSaver.java
 *    Copyright (C) 2004-2012 University of Waikato, Hamilton, New Zealand
 *
 */

package weka.core.converters;

import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.OutputStream;

import weka.core.Capabilities;
import weka.core.Capabilities.Capability;
import weka.core.RevisionUtils;

/**
 
 * Serializes the instances to a file with extension bsi.
 * 

* * Valid options are:

* *

 -i <the input file>
 * The input file
* *
 -o <the output file>
 * The output file
* * * @author Stefan Mutter ([email protected]) * @version $Revision: 8034 $ * @see Saver */ public class SerializedInstancesSaver extends AbstractFileSaver implements BatchConverter { /** for serialization. */ static final long serialVersionUID = -7717010648500658872L; /** the output stream. */ protected ObjectOutputStream m_objectstream; /** Constructor. */ public SerializedInstancesSaver(){ resetOptions(); } /** * Returns a string describing this Saver. * * @return a description of the Saver suitable for * displaying in the explorer/experimenter gui */ public String globalInfo() { return "Serializes the instances to a file with extension bsi."; } /** * Returns a description of the file type. * * @return a short file description */ public String getFileDescription() { return "Binary serialized instances"; } /** * Resets the Saver. */ public void resetOptions() { super.resetOptions(); setFileExtension(".bsi"); } /** * Returns the Capabilities of this saver. * * @return the capabilities of this object * @see Capabilities */ public Capabilities getCapabilities() { Capabilities result = super.getCapabilities(); // attributes result.enableAllAttributes(); result.enable(Capability.MISSING_VALUES); // class result.enableAllClasses(); result.enable(Capability.MISSING_CLASS_VALUES); result.enable(Capability.NO_CLASS); return result; } /** * Resets the writer, setting writer and objectstream to null. */ public void resetWriter() { super.resetWriter(); m_objectstream = null; } /** * Sets the destination output stream. * * @param output the output stream. * @throws IOException throws an IOException if destination cannot be set */ public void setDestination(OutputStream output) throws IOException { super.setDestination(output); m_objectstream = new ObjectOutputStream(output); } /** * Writes a Batch of instances. * * @throws IOException throws IOException if saving in batch mode is not possible */ public void writeBatch() throws IOException { if(getRetrieval() == INCREMENTAL) throw new IOException("Batch and incremental saving cannot be mixed."); if(getInstances() == null) throw new IOException("No instances to save"); setRetrieval(BATCH); if (m_objectstream == null) throw new IOException("No output for serialization."); setWriteMode(WRITE); m_objectstream.writeObject(getInstances()); m_objectstream.flush(); m_objectstream.close(); setWriteMode(WAIT); resetWriter(); setWriteMode(CANCEL); } /** * Returns the revision string. * * @return the revision */ public String getRevision() { return RevisionUtils.extract("$Revision: 8034 $"); } /** * Main method. * * @param args should contain the options of a Saver. */ public static void main(String[] args) { runFileSaver(new SerializedInstancesSaver(), args); } }




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