/// <summary> Method for testing filters ability to process multiple batches.
///
/// </summary>
/// <param name="argv">should contain the following arguments:<br>
/// -i (first) input file <br>
/// -o (first) output file <br>
/// -r (second) input file <br>
/// -s (second) output file <br>
/// -c class_index <br>
/// or -h for help on options
/// </param>
/// <exception cref="Exception">if something goes wrong or the user requests help on
/// command options
/// </exception>
public static void batchFilterFile(Filter filter, System.String[] options)
{
Instances firstData = null;
Instances secondData = null;
//UPGRADE_ISSUE: Class hierarchy differences between 'java.io.Reader' and 'System.IO.StreamReader' may cause compilation errors. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1186'"
System.IO.StreamReader firstInput = null;
//UPGRADE_ISSUE: Class hierarchy differences between 'java.io.Reader' and 'System.IO.StreamReader' may cause compilation errors. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1186'"
System.IO.StreamReader secondInput = null;
System.IO.StreamWriter firstOutput = null;
System.IO.StreamWriter secondOutput = null;
bool helpRequest;
try
{
helpRequest = Utils.getFlag('h', options);
System.String fileName = Utils.getOption('i', options);
if (fileName.Length != 0)
{
//UPGRADE_TODO: The differences in the expected value of parameters for constructor 'java.io.BufferedReader.BufferedReader' may cause compilation errors. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1092'"
//UPGRADE_WARNING: At least one expression was used more than once in the target code. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1181'"
//UPGRADE_TODO: Constructor 'java.io.FileReader.FileReader' was converted to 'System.IO.StreamReader' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073'"
firstInput = new System.IO.StreamReader(new System.IO.StreamReader(fileName, System.Text.Encoding.Default).BaseStream, new System.IO.StreamReader(fileName, System.Text.Encoding.Default).CurrentEncoding);
}
else
{
throw new System.Exception("No first input file given.\n");
}
fileName = Utils.getOption('r', options);
if (fileName.Length != 0)
{
//UPGRADE_TODO: The differences in the expected value of parameters for constructor 'java.io.BufferedReader.BufferedReader' may cause compilation errors. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1092'"
//UPGRADE_WARNING: At least one expression was used more than once in the target code. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1181'"
//UPGRADE_TODO: Constructor 'java.io.FileReader.FileReader' was converted to 'System.IO.StreamReader' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073'"
secondInput = new System.IO.StreamReader(new System.IO.StreamReader(fileName, System.Text.Encoding.Default).BaseStream, new System.IO.StreamReader(fileName, System.Text.Encoding.Default).CurrentEncoding);
}
else
{
throw new System.Exception("No second input file given.\n");
}
fileName = Utils.getOption('o', options);
if (fileName.Length != 0)
{
//UPGRADE_TODO: Constructor 'java.io.FileOutputStream.FileOutputStream' was converted to 'System.IO.FileStream.FileStream' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioFileOutputStreamFileOutputStream_javalangString'"
firstOutput = new System.IO.StreamWriter(new System.IO.FileStream(fileName, System.IO.FileMode.Create), System.Text.Encoding.Default);
}
else
{
firstOutput = new System.IO.StreamWriter(System.Console.OpenStandardOutput(), System.Text.Encoding.Default);
}
fileName = Utils.getOption('s', options);
if (fileName.Length != 0)
{
//UPGRADE_TODO: Constructor 'java.io.FileOutputStream.FileOutputStream' was converted to 'System.IO.FileStream.FileStream' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioFileOutputStreamFileOutputStream_javalangString'"
secondOutput = new System.IO.StreamWriter(new System.IO.FileStream(fileName, System.IO.FileMode.Create), System.Text.Encoding.Default);
}
else
{
secondOutput = new System.IO.StreamWriter(System.Console.OpenStandardOutput(), System.Text.Encoding.Default);
}
System.String classIndex = Utils.getOption('c', options);
// if (filter instanceof OptionHandler)
// {
// ((OptionHandler)filter).setOptions(options);
// }
Utils.checkForRemainingOptions(options);
if (helpRequest)
{
throw new System.Exception("Help requested.\n");
}
firstData = new Instances(firstInput, 1);
secondData = new Instances(secondInput, 1);
if (!secondData.equalHeaders(firstData))
{
throw new System.Exception("Input file formats differ.\n");
}
if (classIndex.Length != 0)
{
if (classIndex.Equals("first"))
{
firstData.ClassIndex = 0;
secondData.ClassIndex = 0;
}
else if (classIndex.Equals("last"))
{
firstData.ClassIndex = firstData.numAttributes() - 1;
secondData.ClassIndex = secondData.numAttributes() - 1;
}
else
{
firstData.ClassIndex = System.Int32.Parse(classIndex) - 1;
secondData.ClassIndex = System.Int32.Parse(classIndex) - 1;
}
}
}
catch (System.Exception ex)
{
System.String filterOptions = "";
// Output the error and also the valid options
// if (filter instanceof OptionHandler)
// {
// filterOptions += "\nFilter options:\n\n";
// Enumeration enu = ((OptionHandler)filter).listOptions();
// while (enu.hasMoreElements())
// {
// Option option = (Option) enu.nextElement();
// filterOptions += option.synopsis() + '\n'
// + option.description() + "\n";
// }
// }
System.String genericOptions = "\nGeneral options:\n\n" + "-h\n" + "\tGet help on available options.\n" + "-i <filename>\n" + "\tThe file containing first input instances.\n" + "-o <filename>\n" + "\tThe file first output instances will be written to.\n" + "-r <filename>\n" + "\tThe file containing second input instances.\n" + "-s <filename>\n" + "\tThe file second output instances will be written to.\n" + "-c <class index>\n" + "\tThe number of the attribute to use as the class.\n" + "\t\"first\" and \"last\" are also valid entries.\n" + "\tIf not supplied then no class is assigned.\n";
//UPGRADE_TODO: The equivalent in .NET for method 'java.lang.Throwable.getMessage' may return a different value. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1043'"
throw new System.Exception('\n' + ex.Message + filterOptions + genericOptions);
}
bool printedHeader = false;
if (filter.setInputFormat(firstData))
{
//UPGRADE_TODO: Method 'java.io.PrintWriter.println' was converted to 'System.IO.TextWriter.WriteLine' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioPrintWriterprintln_javalangString'"
firstOutput.WriteLine(filter.getOutputFormat().ToString());
printedHeader = true;
}
// Pass all the instances to the filter
while (firstData.readInstance(firstInput))
{
if (filter.input(firstData.instance(0)))
{
if (!printedHeader)
{
throw new System.ApplicationException("Filter didn't return true from setInputFormat() " + "earlier!");
}
//UPGRADE_TODO: Method 'java.io.PrintWriter.println' was converted to 'System.IO.TextWriter.WriteLine' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioPrintWriterprintln_javalangString'"
firstOutput.WriteLine(filter.output().ToString());
}
firstData.delete(0);
}
// Say that input has finished, and print any pending output instances
if (filter.batchFinished())
{
if (!printedHeader)
{
//UPGRADE_TODO: Method 'java.io.PrintWriter.println' was converted to 'System.IO.TextWriter.WriteLine' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioPrintWriterprintln_javalangString'"
firstOutput.WriteLine(filter.getOutputFormat().ToString());
}
while (filter.numPendingOutput() > 0)
{
//UPGRADE_TODO: Method 'java.io.PrintWriter.println' was converted to 'System.IO.TextWriter.WriteLine' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioPrintWriterprintln_javalangString'"
firstOutput.WriteLine(filter.output().ToString());
}
}
if (firstOutput != null)
{
//UPGRADE_NOTE: Exceptions thrown by the equivalent in .NET of method 'java.io.PrintWriter.close' may be different. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1099'"
firstOutput.Close();
}
printedHeader = false;
if (filter.OutputFormatDefined)
{
//UPGRADE_TODO: Method 'java.io.PrintWriter.println' was converted to 'System.IO.TextWriter.WriteLine' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioPrintWriterprintln_javalangString'"
secondOutput.WriteLine(filter.getOutputFormat().ToString());
printedHeader = true;
}
// Pass all the second instances to the filter
while (secondData.readInstance(secondInput))
{
if (filter.input(secondData.instance(0)))
{
if (!printedHeader)
{
throw new System.ApplicationException("Filter didn't return true from" + " isOutputFormatDefined() earlier!");
}
//UPGRADE_TODO: Method 'java.io.PrintWriter.println' was converted to 'System.IO.TextWriter.WriteLine' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioPrintWriterprintln_javalangString'"
secondOutput.WriteLine(filter.output().ToString());
}
secondData.delete(0);
}
// Say that input has finished, and print any pending output instances
if (filter.batchFinished())
{
if (!printedHeader)
{
//UPGRADE_TODO: Method 'java.io.PrintWriter.println' was converted to 'System.IO.TextWriter.WriteLine' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioPrintWriterprintln_javalangString'"
secondOutput.WriteLine(filter.getOutputFormat().ToString());
}
while (filter.numPendingOutput() > 0)
{
//UPGRADE_TODO: Method 'java.io.PrintWriter.println' was converted to 'System.IO.TextWriter.WriteLine' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioPrintWriterprintln_javalangString'"
secondOutput.WriteLine(filter.output().ToString());
}
}
if (secondOutput != null)
{
//UPGRADE_NOTE: Exceptions thrown by the equivalent in .NET of method 'java.io.PrintWriter.close' may be different. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1099'"
secondOutput.Close();
}
}
/// <summary> Filters an entire set of instances through a filter and returns
/// the new set.
///
/// </summary>
/// <param name="data">the data to be filtered
/// </param>
/// <param name="filter">the filter to be used
/// </param>
/// <returns> the filtered set of data
/// </returns>
/// <exception cref="Exception">if the filter can't be used successfully
/// </exception>
public static Instances useFilter(Instances data, Filter filter)
{
/*
System.err.println(filter.getClass().getName()
+ " in:" + data.numInstances());
*/
for (int i = 0; i < data.numInstances(); i++)
{
filter.input(data.instance(i));
}
filter.batchFinished();
Instances newData = filter.getOutputFormat();
Instance processed;
while ((processed = filter.output()) != null)
{
newData.add(processed);
}
/*
System.err.println(filter.getClass().getName()
+ " out:" + newData.numInstances());
*/
return newData;
}