com.facebook.presto.spi

Interface ConnectorPageSource

All Superinterfaces:

AutoCloseable, Closeable

All Known Subinterfaces:

UpdatablePageSource

All Known Implementing Classes:

FixedPageSource, RecordPageSource

public interface ConnectorPageSource
extends Closeable

Method Summary

Modifier and Type	Method and Description
void	close() Immediately finishes this page source.
long	getCompletedBytes() Gets the number of input bytes processed by this page source so far.
Page	getNextPage() Gets the next page of data.
long	getReadTimeNanos() Gets the wall time this page source spent reading data from the input.
long	getTotalBytes() Gets the total input bytes that will be processed by this page source.
boolean	isFinished() Will this page source product more pages?

Method Detail

getTotalBytes

long getTotalBytes()

Gets the total input bytes that will be processed by this page source. This is normally the same size as the split. If size is not available, this method should return zero.

getCompletedBytes

long getCompletedBytes()

Gets the number of input bytes processed by this page source so far. If size is not available, this method should return zero.

getReadTimeNanos

long getReadTimeNanos()

Gets the wall time this page source spent reading data from the input. If read time is not available, this method should return zero.

isFinished

boolean isFinished()

Will this page source product more pages?

getNextPage

Page getNextPage()

Gets the next page of data. This method is allowed to return null.

close

void close()
    throws IOException

Immediately finishes this page source. Presto will always call this method.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException