Example usage for weka.core.converters SerializedInstancesLoader FILE_EXTENSION

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In this page you can find the example usage for weka.core.converters SerializedInstancesLoader FILE_EXTENSION.

Prototype

String FILE_EXTENSION

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the file extension

Usage

From source file:meka.gui.explorer.Explorer.java

License:Open Source License

/**
 * Adds an undo point./*from w w  w. j av  a2  s  . c o  m*/
 *
 * @return   true if successfully added
 */
public boolean addUndoPoint() {
    boolean result;
    File tempFile;
    ObjectOutputStream oos;
    ArrayList data;

    if (m_Data == null)
        return false;

    tempFile = null;
    try {
        // create temporary file
        tempFile = File.createTempFile("meka", SerializedInstancesLoader.FILE_EXTENSION);
        tempFile.deleteOnExit();

        data = new ArrayList();
        data.add(m_CurrentFile);
        data.add(m_Data);

        // save data
        oos = new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(tempFile)));
        oos.writeObject(data);
        oos.flush();
        oos.close();

        m_Undo.add(tempFile);
        result = true;
    } catch (Exception e) {
        result = false;
        handleException(null, "Failed to save undo data to '" + tempFile + "':", e);
        JOptionPane.showMessageDialog(this, "Failed to save undo data to '" + tempFile + "':\n" + e, "Error",
                JOptionPane.ERROR_MESSAGE);
    }

    updateMenu();

    return result;
}

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From source file:sirius.trainer.step3.SelectFeaturePane.java

License:Open Source License

/**
 * Backs up the current state of the dataset, so the changes can be undone.
 * //from   w  w  w.j av a  2 s  . c o m
 * @throws Exception    if an error occurs
 */
public void addUndoPoint() throws Exception {
    if (applicationData.getDataset1Instances() != null) {
        //create temporary file
        File tempFile = File.createTempFile("weka", SerializedInstancesLoader.FILE_EXTENSION);
        tempFile.deleteOnExit();
        ObjectOutputStream oos = new ObjectOutputStream(
                new BufferedOutputStream(new FileOutputStream(tempFile)));
        oos.writeObject(applicationData.getDataset1Instances());
        oos.flush();
        oos.close();
        //update undo file list
        if (m_tempUndoFiles[m_tempUndoIndex] != null)//remove undo points that are too old
            m_tempUndoFiles[m_tempUndoIndex].delete();
        m_tempUndoFiles[m_tempUndoIndex] = tempFile;
        if (++m_tempUndoIndex >= m_tempUndoFiles.length)//wrap pointer around
            m_tempUndoIndex = 0;
        undoButton.setEnabled(true);
    }
}

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