org.datavec.api.records.reader.impl.misc

Class LibSvmRecordReader

java.lang.Object

org.datavec.api.records.reader.BaseRecordReader

org.datavec.api.records.reader.impl.LineRecordReader

org.datavec.api.records.reader.impl.misc.LibSvmRecordReader

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable, Configurable, RecordReader

public class LibSvmRecordReader
extends LineRecordReader

Author:

Adam Gibson

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	CLASSIFICATION
static String	NAME_SPACE
static String	NUM_FEATURES

Fields inherited from class org.datavec.api.records.reader.impl.LineRecordReader

conf, inputSplit, lineIndex, locations, splitIndex

Fields inherited from class org.datavec.api.records.reader.BaseRecordReader

listeners

Fields inherited from interface org.datavec.api.records.reader.RecordReader

APPEND_LABEL, LABELS

Constructor Summary

Constructors

Constructor and Description
LibSvmRecordReader()

Method Summary

Modifier and Type	Method and Description
void	close()
Configuration	getConf() Return the configuration used by this object.
boolean	hasNext() Whether there are anymore records
void	initialize(Configuration conf, InputSplit split) Called once at initialization.
void	initialize(InputSplit split) Called once at initialization.
List<Writable>	next() Get the next record
List<Writable>	record(URI uri, DataInputStream dataInputStream) Load the record from the given DataInputStream Unlike RecordReader.next() the internal state of the RecordReader is not modified Implementations of this method should not close the DataInputStream
void	setConf(Configuration conf) Set the configuration to be used by this object.

Methods inherited from class org.datavec.api.records.reader.impl.LineRecordReader

closeIfRequired, getIterator, getLabels, loadFromMetaData, loadFromMetaData, nextRecord, onLocationOpen, reset

Methods inherited from class org.datavec.api.records.reader.BaseRecordReader

getListeners, invokeListeners, setListeners, setListeners

Methods inherited from class java.lang.Object

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

Field Detail

CLASSIFICATION

public static final String CLASSIFICATION

See Also:

Constant Field Values

NAME_SPACE

public static final String NAME_SPACE

NUM_FEATURES

public static final String NUM_FEATURES

Constructor Detail

LibSvmRecordReader

public LibSvmRecordReader()

Method Detail

initialize

public void initialize(InputSplit split)
                throws IOException,
                       InterruptedException

Description copied from interface: RecordReader

Called once at initialization.

Specified by:

initialize in interface RecordReader

Overrides:

initialize in class LineRecordReader

Parameters:

split - the split that defines the range of records to read

Throws:

IOException

InterruptedException

initialize

public void initialize(Configuration conf,
                       InputSplit split)
                throws IOException,
                       InterruptedException

Description copied from interface: RecordReader

Called once at initialization.

Specified by:

initialize in interface RecordReader

Overrides:

initialize in class LineRecordReader

Parameters:

conf - a configuration for initialization

split - the split that defines the range of records to read

Throws:

IOException

InterruptedException

next

public List<Writable> next()

Description copied from interface: RecordReader

Get the next record

Specified by:

next in interface RecordReader

Overrides:

next in class LineRecordReader

Returns:

hasNext

public boolean hasNext()

Description copied from interface: RecordReader

Whether there are anymore records

Specified by:

hasNext in interface RecordReader

Overrides:

hasNext in class LineRecordReader

Returns:

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class LineRecordReader

Throws:

IOException

setConf

public void setConf(Configuration conf)

Description copied from interface: Configurable

Set the configuration to be used by this object.

Specified by:

setConf in interface Configurable

Overrides:

setConf in class LineRecordReader

getConf

public Configuration getConf()

Description copied from interface: Configurable

Return the configuration used by this object.

Specified by:

getConf in interface Configurable

Overrides:

getConf in class LineRecordReader

record

public List<Writable> record(URI uri,
                             DataInputStream dataInputStream)
                      throws IOException

Description copied from interface: RecordReader

Load the record from the given DataInputStream Unlike RecordReader.next() the internal state of the RecordReader is not modified Implementations of this method should not close the DataInputStream

Specified by:

record in interface RecordReader

Overrides:

record in class LineRecordReader

Throws:

IOException - if error occurs during reading from the input stream