weka.core.converters

Class AbstractFileSaver

java.lang.Object

weka.core.converters.AbstractSaver

weka.core.converters.AbstractFileSaver

All Implemented Interfaces:

java.io.Serializable, CapabilitiesHandler, CapabilitiesIgnorer, FileSourcedConverter, Saver, EnvironmentHandler, OptionHandler, RevisionHandler

Direct Known Subclasses:

ArffSaver, C45Saver, CSVSaver, DictionarySaver, JSONSaver, LibSVMSaver, MatlabSaver, SerializedInstancesSaver, SVMLightSaver, XRFFSaver

public abstract class AbstractFileSaver
extends AbstractSaver
implements OptionHandler, FileSourcedConverter, EnvironmentHandler

Abstract class for Savers that save to a file Valid options are: -i input arff file
The input filw in arff format.

-o the output file
The output file. The prefix of the output file is sufficient. If no output file is given, Saver tries to use standard out.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Environment	m_env Environment variables
protected int	m_incrementalCounter Counter.
protected boolean	m_useRelativePath use relative file paths

Fields inherited from class weka.core.converters.AbstractSaver

CANCEL, m_DoNotCheckCapabilities, m_retrieval, STRUCTURE_READY, WAIT, WRITE

Fields inherited from interface weka.core.converters.Saver

BATCH, INCREMENTAL, NONE

Constructor Summary

Constructors

Constructor and Description
AbstractFileSaver()

Method Summary

Modifier and Type	Method and Description
void	cancel() Cancels the incremental saving process.
java.lang.String	filePrefix() Gets the file name prefix
abstract java.lang.String	getFileDescription() to be pverridden
java.lang.String	getFileExtension() Gets ihe file extension.
java.lang.String[]	getFileExtensions() Gets all the file extensions used for this type of file
java.lang.String[]	getOptions() Gets the current settings of the Saver object.
boolean	getUseRelativePath() Gets whether relative paths are to be used
java.io.BufferedWriter	getWriter() Gets the writer
java.util.Enumeration<Option>	listOptions() Returns an enumeration describing the available options.
protected static java.lang.String	makeOptionStr(AbstractFileSaver saver) generates a string suitable for output on the command line displaying all available options.
void	resetOptions() resets the options
void	resetWriter() Sets the writer to null.
java.lang.String	retrieveDir() Gets the directory
java.io.File	retrieveFile() Gets the destination file.
static void	runFileSaver(AbstractFileSaver saver, java.lang.String[] options) runs the given saver with the specified options
void	setDestination(java.io.File file) Sets the destination file (and directories if necessary).
void	setDestination(java.io.OutputStream output) Sets the destination output stream.
void	setDir(java.lang.String dir) Sets the directory where the instances should be stored
void	setDirAndPrefix(java.lang.String relationName, java.lang.String add) Sets the directory and the file prefix.
void	setEnvironment(Environment env) Set the environment variables to use.
void	setFile(java.io.File outputFile) Sets the destination file.
protected void	setFileExtension(java.lang.String ext) Sets ihe file extension.
void	setFilePrefix(java.lang.String prefix) Sets the file name prefix
void	setOptions(java.lang.String[] options) Parses a given list of options.
void	setUseRelativePath(boolean rp) Set whether to use relative rather than absolute paths
java.lang.String	useRelativePathTipText() Tip text suitable for displaying int the GUI

Methods inherited from class weka.core.converters.AbstractSaver

doNotCheckCapabilitiesTipText, getCapabilities, getDoNotCheckCapabilities, getInstances, getRetrieval, getWriteMode, resetStructure, setDoNotCheckCapabilities, setInstances, setRetrieval, setStructure, setWriteMode, writeBatch, writeIncremental

Methods inherited from class java.lang.Object

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

Methods inherited from interface weka.core.RevisionHandler

getRevision

Field Detail

m_incrementalCounter

protected int m_incrementalCounter

Counter. In incremental mode after reading 100 instances they will be written to a file.

m_useRelativePath

protected boolean m_useRelativePath

use relative file paths

m_env

protected transient Environment m_env

Environment variables

Constructor Detail

AbstractFileSaver

public AbstractFileSaver()

Method Detail

resetOptions

public void resetOptions()

resets the options

Overrides:

resetOptions in class AbstractSaver

getWriter

public java.io.BufferedWriter getWriter()

Gets the writer

Returns:

the BufferedWriter

resetWriter

public void resetWriter()

Sets the writer to null.

getFileExtension

public java.lang.String getFileExtension()

Gets ihe file extension.

Specified by:

getFileExtension in interface FileSourcedConverter

Specified by:

getFileExtension in interface Saver

Overrides:

getFileExtension in class AbstractSaver

Returns:

the file extension as a string.

getFileExtensions

public java.lang.String[] getFileExtensions()

Gets all the file extensions used for this type of file

Specified by:

getFileExtensions in interface FileSourcedConverter

Returns:

the file extensions

setFileExtension

protected void setFileExtension(java.lang.String ext)

Sets ihe file extension.

Parameters:

ext - the file extension as a string startin with '.'.

retrieveFile

public java.io.File retrieveFile()

Gets the destination file.

Specified by:

retrieveFile in interface FileSourcedConverter

Returns:

the destination file.

setFile

public void setFile(java.io.File outputFile)
             throws java.io.IOException

Sets the destination file.

Specified by:

setFile in interface FileSourcedConverter

Specified by:

setFile in interface Saver

Overrides:

setFile in class AbstractSaver

Parameters:

outputFile - the destination file.

Throws:

java.io.IOException - throws an IOException if file cannot be set

setFilePrefix

public void setFilePrefix(java.lang.String prefix)

Sets the file name prefix

Specified by:

setFilePrefix in interface Saver

Overrides:

setFilePrefix in class AbstractSaver

Parameters:

prefix - the file name prefix

filePrefix

public java.lang.String filePrefix()

Gets the file name prefix

Specified by:

filePrefix in interface Saver

Overrides:

filePrefix in class AbstractSaver

Returns:

the prefix of the filename

setDir

public void setDir(java.lang.String dir)

Sets the directory where the instances should be stored

Specified by:

setDir in interface Saver

Overrides:

setDir in class AbstractSaver

Parameters:

dir - a string containing the directory path and name

retrieveDir

public java.lang.String retrieveDir()

Gets the directory

Specified by:

retrieveDir in interface Saver

Overrides:

retrieveDir in class AbstractSaver

Returns:

a string with the file name

setEnvironment

public void setEnvironment(Environment env)

Set the environment variables to use.

Specified by:

setEnvironment in interface EnvironmentHandler

Parameters:

env - the environment variables to use

listOptions

public java.util.Enumeration<Option> listOptions()

Returns an enumeration describing the available options.

Specified by:

listOptions in interface OptionHandler

Returns:

an enumeration of all the available options.

setOptions

public void setOptions(java.lang.String[] options)
                throws java.lang.Exception

Parses a given list of options. Valid option is:

-i input arff file
The input filw in arff format.

-o the output file
The output file. The prefix of the output file is sufficient. If no output file is given, Saver tries to use standard out.

Specified by:

setOptions in interface OptionHandler

Parameters:

options - the list of options as an array of strings

Throws:

java.lang.Exception - if an option is not supported

getOptions

public java.lang.String[] getOptions()

Gets the current settings of the Saver object.

Specified by:

getOptions in interface OptionHandler

Returns:

an array of strings suitable for passing to setOptions

cancel

public void cancel()

Cancels the incremental saving process.

Overrides:

cancel in class AbstractSaver

setDestination

public void setDestination(java.io.File file)
                    throws java.io.IOException

Sets the destination file (and directories if necessary).

Specified by:

setDestination in interface Saver

Overrides:

setDestination in class AbstractSaver

Parameters:

file - the File

Throws:

java.io.IOException - always

setDestination

public void setDestination(java.io.OutputStream output)
                    throws java.io.IOException

Sets the destination output stream.

Specified by:

setDestination in interface Saver

Overrides:

setDestination in class AbstractSaver

Parameters:

output - the output stream.

Throws:

java.io.IOException - throws an IOException if destination cannot be set

setDirAndPrefix

public void setDirAndPrefix(java.lang.String relationName,
                            java.lang.String add)

Sets the directory and the file prefix. This method is used in the KnowledgeFlow GUI

Specified by:

setDirAndPrefix in interface Saver

Overrides:

setDirAndPrefix in class AbstractSaver

Parameters:

relationName - the name of the relation to save

add - additional string which should be part of the filename

getFileDescription

public abstract java.lang.String getFileDescription()

to be pverridden

Specified by:

getFileDescription in interface FileSourcedConverter

Returns:

the file type description.

useRelativePathTipText

public java.lang.String useRelativePathTipText()

Tip text suitable for displaying int the GUI

Returns:

a description of this property as a String

setUseRelativePath

public void setUseRelativePath(boolean rp)

Set whether to use relative rather than absolute paths

Specified by:

setUseRelativePath in interface FileSourcedConverter

Parameters:

rp - true if relative paths are to be used

getUseRelativePath

public boolean getUseRelativePath()

Gets whether relative paths are to be used

Specified by:

getUseRelativePath in interface FileSourcedConverter

Returns:

true if relative paths are to be used

makeOptionStr

protected static java.lang.String makeOptionStr(AbstractFileSaver saver)

generates a string suitable for output on the command line displaying all available options.

Parameters:

saver - the saver to create the option string for

Returns:

the option string

runFileSaver

public static void runFileSaver(AbstractFileSaver saver,
                                java.lang.String[] options)

runs the given saver with the specified options

Parameters:

saver - the saver to run

options - the commandline options