org.apache.arrow.dataset.jni

Class NativeScanTask

java.lang.Object

org.apache.arrow.dataset.jni.NativeScanTask

All Implemented Interfaces:

AutoCloseable, ScanTask

public class NativeScanTask
extends Object
implements ScanTask

Native implementation of ScanTask. Currently RecordBatches are iterated directly by the scanner id via JniWrapper, thus we allow only one-time execution of method execute(). If a re-scan operation is expected, call NativeDataset.newScan(org.apache.arrow.dataset.scanner.ScanOptions) to create a new scanner instance.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.arrow.dataset.scanner.ScanTask

ScanTask.BatchIterator

Constructor Summary

Constructors

Constructor and Description
NativeScanTask(NativeScanner scanner) Constructor.

Method Summary

Modifier and Type	Method and Description
void	close()
ScanTask.BatchIterator	execute() Creates and returns a ScanTask.BatchIterator instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

NativeScanTask

public NativeScanTask(NativeScanner scanner)

Constructor.

Method Detail

execute

public ScanTask.BatchIterator execute()

Description copied from interface: ScanTask

Creates and returns a ScanTask.BatchIterator instance.

Specified by:

execute in interface ScanTask

close

public void close()

Specified by:

close in interface AutoCloseable