Package weka.core.converters
Class XRFFLoader
java.lang.Object
weka.core.converters.AbstractLoader
weka.core.converters.AbstractFileLoader
weka.core.converters.XRFFLoader
- All Implemented Interfaces:
Serializable,BatchConverter,FileSourcedConverter,Loader,URLSourcedLoader,EnvironmentHandler,RevisionHandler
Reads a source that is in the XML version of the ARFF format. It automatically decompresses the data if the extension is '.xrff.gz'.
- Version:
- $Revision: 8034 $
- Author:
- FracPete (fracpete at waikato dot ac dot nz)
- See Also:
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Nested Class Summary
Nested classes/interfaces inherited from interface weka.core.converters.Loader
Loader.StructureNotReadyException -
Field Summary
FieldsModifier and TypeFieldDescriptionstatic Stringthe file extensionstatic Stringthe extension for compressed filesFields inherited from interface weka.core.converters.Loader
BATCH, INCREMENTAL, NONE -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionReturn the full data set.Returns a description of the file type.Get the file extension used for libsvm filesString[]Gets all the file extensions used for this type of filegetNextInstance(Instances structure) XRFFLoader is unable to process a data set incrementally.Returns the revision string.Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.Returns a string describing this Loaderstatic voidMain method.voidreset()Resets the Loader ready to read a new data setReturn the current urlvoidResets the Loader object and sets the source of the data set to be the supplied File object.voidsetSource(InputStream in) Resets the Loader object and sets the source of the data set to be the supplied InputStream.voidResets the Loader object and sets the source of the data set to be the supplied url.voidSet the url to load fromMethods inherited from class weka.core.converters.AbstractFileLoader
getUseRelativePath, retrieveFile, runFileLoader, setEnvironment, setFile, setUseRelativePath, useRelativePathTipTextMethods inherited from class weka.core.converters.AbstractLoader
setRetrieval
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Field Details
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FILE_EXTENSION
the file extension -
FILE_EXTENSION_COMPRESSED
the extension for compressed files
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Constructor Details
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XRFFLoader
public XRFFLoader()
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Method Details
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globalInfo
Returns a string describing this Loader- Returns:
- a description of the Loader suitable for displaying in the explorer/experimenter gui
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getFileExtension
Get the file extension used for libsvm files- Specified by:
getFileExtensionin interfaceFileSourcedConverter- Returns:
- the file extension
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getFileExtensions
Gets all the file extensions used for this type of file- Specified by:
getFileExtensionsin interfaceFileSourcedConverter- Returns:
- the file extensions
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getFileDescription
Returns a description of the file type.- Specified by:
getFileDescriptionin interfaceFileSourcedConverter- Returns:
- a short file description
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reset
Resets the Loader ready to read a new data set- Specified by:
resetin interfaceLoader- Overrides:
resetin classAbstractFileLoader- Throws:
IOException- if something goes wrong
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setSource
Resets the Loader object and sets the source of the data set to be the supplied File object.- Specified by:
setSourcein interfaceLoader- Overrides:
setSourcein classAbstractFileLoader- Parameters:
file- the source file.- Throws:
IOException- if an error occurs
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setSource
Resets the Loader object and sets the source of the data set to be the supplied url.- Parameters:
url- the source url.- Throws:
IOException- if an error occurs
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setURL
Set the url to load from- Specified by:
setURLin interfaceURLSourcedLoader- Parameters:
url- the url to load from- Throws:
IOException- if the url can't be set.
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retrieveURL
Return the current url- Specified by:
retrieveURLin interfaceURLSourcedLoader- Returns:
- the current url
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setSource
Resets the Loader object and sets the source of the data set to be the supplied InputStream.- Specified by:
setSourcein interfaceLoader- Overrides:
setSourcein classAbstractLoader- Parameters:
in- the source InputStream.- Throws:
IOException- if initialization of reader fails.
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getStructure
Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.- Specified by:
getStructurein interfaceLoader- Specified by:
getStructurein classAbstractLoader- Returns:
- the structure of the data set as an empty set of Instances
- Throws:
IOException- if an error occurs
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getDataSet
Return the full data set. If the structure hasn't yet been determined by a call to getStructure then method should do so before processing the rest of the data set.- Specified by:
getDataSetin interfaceLoader- Specified by:
getDataSetin classAbstractLoader- Returns:
- the structure of the data set as an empty set of Instances
- Throws:
IOException- if there is no source or parsing fails
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getNextInstance
XRFFLoader is unable to process a data set incrementally.- Specified by:
getNextInstancein interfaceLoader- Specified by:
getNextInstancein classAbstractLoader- Parameters:
structure- ignored- Returns:
- never returns without throwing an exception
- Throws:
IOException- always. XRFFLoader is unable to process a data set incrementally.
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getRevision
Returns the revision string.- Specified by:
getRevisionin interfaceRevisionHandler- Returns:
- the revision
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main
Main method.- Parameters:
args- should contain the name of an input file.
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