Package ai.rapids.cudf

Class TableWriter

java.lang.Object

ai.rapids.cudf.TableWriter

All Implemented Interfaces:

AutoCloseable

public abstract class TableWriter
extends Object
implements AutoCloseable

Provides an interface for writing out Table information in multiple steps. A TableWriter will be returned from one of various factory functions in the Table class that let you set the format of the data and its destination. After that write can be called one or more times. When you are done writing call close to finish.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TableWriter.WriteStatistics

Field Summary

Fields

Modifier and Type	Field	Description
protected long	writerHandle

Method Summary

Modifier and Type	Method	Description
abstract void	close()
TableWriter.WriteStatistics	getWriteStatistics()	Get the write statistics for the writer up to the last write call.
abstract void	write(Table table)	Write out a table.

Methods inherited from class java.lang.Object

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

Field Details

writerHandle

protected long writerHandle

Method Details

write

public abstract void write(Table table)
                    throws CudfException

Write out a table. Note that all columns must be in the same order each time this is called and the format of each table cannot change.

Parameters:

table - what to write out.

Throws:

CudfException

close

public abstract void close()
                    throws CudfException

Specified by:

close in interface AutoCloseable

Throws:

CudfException

getWriteStatistics

public TableWriter.WriteStatistics getWriteStatistics()

Get the write statistics for the writer up to the last write call. Currently, only ORC and Parquet writers support write statistics. Calling this method on other writers will return null.

Returns:

The write statistics.