org.datavec.api.records.writer

Interface RecordWriter

All Superinterfaces:

AutoCloseable, Closeable, Configurable

All Known Implementing Classes:

CSVRecordWriter, FileRecordWriter, LibSvmRecordWriter, LineRecordWriter, MatlabRecordWriter, SVMLightRecordWriter

public interface RecordWriter
extends Closeable, Configurable

Record writer

Author:

Adam Gibson

Field Summary

Fields

Modifier and Type	Field and Description
static String	APPEND

Method Summary

Modifier and Type	Method and Description
void	close() Close the recod reader
void	initialize(Configuration configuration, InputSplit split, Partitioner partitioner) Initialize the record reader with the given configuration and InputSplit
void	initialize(InputSplit inputSplit, Partitioner partitioner) Initialize a record writer with the given input split
boolean	supportsBatch() Returns true if this record writer supports efficient batch writing using writeBatch(List)
PartitionMetaData	write(List<Writable> record) Write a record
PartitionMetaData	writeBatch(List<List<Writable>> batch) Write a batch of records

Methods inherited from interface org.datavec.api.conf.Configurable

getConf, setConf

Field Detail

APPEND

static final String APPEND

See Also:

Constant Field Values

Method Detail

supportsBatch

boolean supportsBatch()

Returns true if this record writer supports efficient batch writing using writeBatch(List)

Returns:

initialize

void initialize(InputSplit inputSplit,
                Partitioner partitioner)
         throws Exception

Initialize a record writer with the given input split

Parameters:

inputSplit - the input split to initialize with

partitioner -

Throws:

Exception

initialize

void initialize(Configuration configuration,
                InputSplit split,
                Partitioner partitioner)
         throws Exception

Initialize the record reader with the given configuration and InputSplit

Parameters:

configuration - the configuration to iniailize with

split - the split to use

partitioner -

Throws:

Exception

write

PartitionMetaData write(List<Writable> record)
                 throws IOException

Write a record

Parameters:

record - the record to write

Throws:

IOException

writeBatch

PartitionMetaData writeBatch(List<List<Writable>> batch)
                      throws IOException

Write a batch of records

Parameters:

batch - the batch to write

Throws:

IOException

close

void close()

Close the recod reader

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable