weka.core.converters

Class ConverterUtils.DataSink

java.lang.Object

weka.core.converters.ConverterUtils.DataSink

All Implemented Interfaces:

java.io.Serializable, RevisionHandler

Enclosing class:

ConverterUtils

public static class ConverterUtils.DataSink
extends java.lang.Object
implements java.io.Serializable, RevisionHandler

Helper class for saving data to files. Via the ConverterUtils class it determines which converter to use for saving the data. It is the logical counterpart to DataSource.

Version:

$Revision: 6416 $

Author:

FracPete (fracpete at waikato dot ac dot nz)

See Also:

ConverterUtils.DataSource, Serialized Form

Constructor Summary

Constructors

Constructor and Description
DataSink(java.io.OutputStream stream) initializes the sink to save the data in the stream (always in ARFF format).
DataSink(Saver saver) initializes the sink to save the data to the given Saver (expected to be fully configured).
DataSink(java.lang.String filename) initializes the sink to save the data to the given file.

Method Summary

Modifier and Type	Method and Description
java.lang.String	getRevision() Returns the revision string.
static void	main(java.lang.String[] args) for testing only - takes a data file as input and a data file for the output.
void	write(Instances data) writes the given data either via the saver or to the defined output stream (depending on the constructor).
static void	write(java.io.OutputStream stream, Instances data) writes the data to the given stream (always in ARFF format).
static void	write(Saver saver, Instances data) writes the data via the given saver.
static void	write(java.lang.String filename, Instances data) writes the data to the given file.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataSink

public DataSink(java.lang.String filename)
         throws java.lang.Exception

initializes the sink to save the data to the given file.

Parameters:

filename - the file to save data to

Throws:

java.lang.Exception - if set of saver fails

DataSink

public DataSink(Saver saver)

initializes the sink to save the data to the given Saver (expected to be fully configured).

Parameters:

saver - the saver to use for saving the data

DataSink

public DataSink(java.io.OutputStream stream)

initializes the sink to save the data in the stream (always in ARFF format).

Parameters:

stream - the output stream to use for storing the data in ARFF format

Method Detail

write

public void write(Instances data)
           throws java.lang.Exception

writes the given data either via the saver or to the defined output stream (depending on the constructor). In case of the stream, the stream is only flushed, but not closed.

Parameters:

data - the data to save

Throws:

java.lang.Exception - if saving fails

write

public static void write(java.lang.String filename,
                         Instances data)
                  throws java.lang.Exception

writes the data to the given file.

Parameters:

filename - the file to write the data to

data - the data to store

Throws:

java.lang.Exception - if writing fails

write

public static void write(Saver saver,
                         Instances data)
                  throws java.lang.Exception

writes the data via the given saver.

Parameters:

saver - the saver to use for writing the data

data - the data to store

Throws:

java.lang.Exception - if writing fails

write

public static void write(java.io.OutputStream stream,
                         Instances data)
                  throws java.lang.Exception

writes the data to the given stream (always in ARFF format).

Parameters:

stream - the stream to write the data to (ARFF format)

data - the data to store

Throws:

java.lang.Exception - if writing fails

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

for testing only - takes a data file as input and a data file for the output.

Parameters:

args - the commandline arguments

Throws:

java.lang.Exception - if something goes wrong

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision