weka.core.converters
Class AbstractFileLoader

java.lang.Object
  weka.core.converters.AbstractLoader
      weka.core.converters.AbstractFileLoader

All Implemented Interfaces:

Serializable, FileSourcedConverter, Loader, EnvironmentHandler, RevisionHandler

Direct Known Subclasses:

ArffLoader, C45Loader, CSVLoader, JSONLoader, LibSVMLoader, MatlabLoader, SerializedInstancesLoader, SVMLightLoader, XRFFLoader

public abstract class AbstractFileLoader
extends AbstractLoader
implements FileSourcedConverter, EnvironmentHandler

Abstract superclass for all file loaders.

Version:

$Revision: 8034 $

Author:

fracpete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

static String

FILE_EXTENSION_COMPRESSED the extension for compressed files

Fields inherited from interface weka.core.converters.Loader

BATCH, INCREMENTAL, NONE

Constructor Summary

AbstractFileLoader()

Method Summary

boolean	getUseRelativePath() Gets whether relative paths are to be used
void	reset() Resets the loader ready to read a new data set
File	retrieveFile() get the File specified as the source
static void	runFileLoader(AbstractFileLoader loader, String[] options) runs the given loader with the provided options
void	setEnvironment(Environment env) Set the environment variables to use.
void	setFile(File file) sets the source File
void	setSource(File file) Resets the Loader object and sets the source of the data set to be the supplied File object.
void	setUseRelativePath(boolean rp) Set whether to use relative rather than absolute paths
String	useRelativePathTipText() Tip text suitable for displaying int the GUI

Methods inherited from class weka.core.converters.AbstractLoader

getDataSet, getNextInstance, getStructure, setRetrieval, setSource

Methods inherited from class java.lang.Object

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

Methods inherited from interface weka.core.converters.FileSourcedConverter

getFileDescription, getFileExtension, getFileExtensions

Methods inherited from interface weka.core.RevisionHandler

getRevision

Field Detail

FILE_EXTENSION_COMPRESSED

public static String FILE_EXTENSION_COMPRESSED

the extension for compressed files

Constructor Detail

AbstractFileLoader

public AbstractFileLoader()

Method Detail

retrieveFile

public File retrieveFile()

get the File specified as the source

Specified by:

retrieveFile in interface FileSourcedConverter

Returns:

the source file

setFile

public void setFile(File file)
             throws IOException

sets the source File

Specified by:

setFile in interface FileSourcedConverter

Parameters:

file - the source file

Throws:

IOException - if an error occurs

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

reset

public void reset()
           throws IOException

Resets the loader ready to read a new data set

Specified by:

reset in interface Loader

Overrides:

reset in class AbstractLoader

Throws:

IOException - if something goes wrong

setSource

public void setSource(File file)
               throws IOException

Resets the Loader object and sets the source of the data set to be the supplied File object.

Specified by:

setSource in interface Loader

Overrides:

setSource in class AbstractLoader

Parameters:

file - the source file.

Throws:

IOException - if an error occurs

useRelativePathTipText

public 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

runFileLoader

public static void runFileLoader(AbstractFileLoader loader,
                                 String[] options)

runs the given loader with the provided options

Parameters:

loader - the loader to run

options - the commandline options, first argument must be the file to load