ai.rapids.cudf

Class ContiguousTable

java.lang.Object

ai.rapids.cudf.ContiguousTable

All Implemented Interfaces:

AutoCloseable

public final class ContiguousTable
extends Object
implements AutoCloseable

A table that is backed by a single contiguous device buffer. This makes transfers of the data much simpler.

Method Summary

Modifier and Type	Method and Description
void	close() Close the contiguous table instance and its underlying resources.
DeviceMemoryBuffer	getBuffer() Get the device buffer backing the contiguous table data.
ByteBuffer	getMetadataDirectBuffer() Get the byte buffer containing the host metadata describing the schema and layout of the contiguous table.
long	getRowCount() Returns the number of rows in the table.
Table	getTable() Get the table instance, reconstructing it from the metadata if necessary.

Methods inherited from class java.lang.Object

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

Method Detail

getRowCount

public long getRowCount()

Returns the number of rows in the table. This accessor avoids manifesting the Table instance if only the row count is needed.

getTable

public Table getTable()

Get the table instance, reconstructing it from the metadata if necessary.

getBuffer

public DeviceMemoryBuffer getBuffer()

Get the device buffer backing the contiguous table data.

getMetadataDirectBuffer

public ByteBuffer getMetadataDirectBuffer()

Get the byte buffer containing the host metadata describing the schema and layout of the contiguous table.

NOTE: This is a direct byte buffer that is backed by the underlying native metadata instance and therefore is only valid to be used while this contiguous table instance is valid. Attempts to cache and access the resulting buffer after this instance has been destroyed will result in undefined behavior including the possibility of segmentation faults or data corruption.

close

public void close()

Close the contiguous table instance and its underlying resources.

Specified by:

close in interface AutoCloseable