Package org.tribuo.json

Class JsonFileIterator

java.lang.Object

com.oracle.labs.mlrg.olcut.util.IOSpliterator<ColumnarIterator.Row>

org.tribuo.data.columnar.ColumnarIterator

org.tribuo.json.JsonFileIterator

All Implemented Interfaces:

AutoCloseable, Iterator<ColumnarIterator.Row>, Spliterator<ColumnarIterator.Row>

public class JsonFileIterator
extends ColumnarIterator
implements AutoCloseable

An iterator for JSON format files converting them into a format suitable for RowProcessor.

Nested Class Summary

Nested classes/interfaces inherited from class org.tribuo.data.columnar.ColumnarIterator

ColumnarIterator.Row

Nested classes/interfaces inherited from interface java.util.Spliterator

Spliterator.OfDouble, Spliterator.OfInt, Spliterator.OfLong, Spliterator.OfPrimitive<T extends Object,T_CONS extends Object,T_SPLITR extends Spliterator.OfPrimitive<T,T_CONS,T_SPLITR>>

Field Summary

Fields inherited from class org.tribuo.data.columnar.ColumnarIterator

currentRow, fields

Fields inherited from class com.oracle.labs.mlrg.olcut.util.IOSpliterator

DEFAULT_BATCH_SIZE, DEFAULT_CHARACTERISTICS

Fields inherited from interface java.util.Spliterator

CONCURRENT, DISTINCT, IMMUTABLE, NONNULL, ORDERED, SIZED, SORTED, SUBSIZED

Constructor Summary

Constructors

Constructor	Description
JsonFileIterator(Reader reader)	Builds a JsonFileIterator for the supplied Reader.
JsonFileIterator(URI dataFile)	Builds a CSVIterator for the supplied URI.

Method Summary

Modifier and Type	Method	Description
void	close()
protected Optional<ColumnarIterator.Row>	getRow()	Returns the next row of data based on internal state stored by the implementor, or Optional.empty() if there is no more data.

Methods inherited from class org.tribuo.data.columnar.ColumnarIterator

forEachRemaining, getFields, hasNext, next, tryAdvance

Methods inherited from class com.oracle.labs.mlrg.olcut.util.IOSpliterator

characteristics, estimateSize, trySplit

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

remove

Methods inherited from interface java.util.Spliterator

getComparator, getExactSizeIfKnown, hasCharacteristics

Constructor Details

JsonFileIterator

public JsonFileIterator(Reader reader)

Builds a JsonFileIterator for the supplied Reader.

Parameters:

reader - The source to read.

JsonFileIterator

public JsonFileIterator(URI dataFile)
                 throws IOException

Builds a CSVIterator for the supplied URI.

Parameters:

dataFile - The source to read.

Throws:

IOException - thrown if the file is not readable in some way.

Method Details

getRow

protected Optional<ColumnarIterator.Row> getRow()

Description copied from class: ColumnarIterator

Returns the next row of data based on internal state stored by the implementor, or Optional.empty() if there is no more data.

Specified by:

getRow in class ColumnarIterator

Returns:

The next row of data or None.

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Throws:

IOException