ai.rapids.cudf

Class JCudfSerialization.SerializedTableHeader

java.lang.Object

ai.rapids.cudf.JCudfSerialization.SerializedTableHeader

Enclosing class:

JCudfSerialization

public static final class JCudfSerialization.SerializedTableHeader
extends Object

Holds the metadata about a serialized table. If this is being read from a stream isInitialized will return true if the metadata was read correctly from the stream. It will return false if an EOF was encountered at the beginning indicating that there was no data to be read.

Constructor Summary

Constructors

Constructor and Description
SerializedTableHeader(DataInputStream din)

Method Summary

Modifier and Type	Method and Description
DType	getColumnType(int columnIndex)
long	getDataLen() Returns the size of a buffer needed to read data into the stream.
int	getNumColumns() Returns the number of columns stored in this table
int	getNumRows() Returns the number of rows stored in this table.
boolean	wasDataRead() Set to true once data is successfully read from a stream by readTableIntoBuffer.
boolean	wasInitialized() Returns true if the metadata for this table was read, else false indicating an EOF was encountered.
void	writeTo(ai.rapids.cudf.JCudfSerialization.DataWriter dout)

Methods inherited from class java.lang.Object

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

Constructor Detail

SerializedTableHeader

public SerializedTableHeader(DataInputStream din)
                      throws IOException

Throws:

IOException

Method Detail

getColumnType

public DType getColumnType(int columnIndex)

wasDataRead

public boolean wasDataRead()

Set to true once data is successfully read from a stream by readTableIntoBuffer.

Returns:

true if data was read, else false.

getDataLen

public long getDataLen()

Returns the size of a buffer needed to read data into the stream.

getNumRows

public int getNumRows()

Returns the number of rows stored in this table.

getNumColumns

public int getNumColumns()

Returns the number of columns stored in this table

wasInitialized

public boolean wasInitialized()

Returns true if the metadata for this table was read, else false indicating an EOF was encountered.

writeTo

public void writeTo(ai.rapids.cudf.JCudfSerialization.DataWriter dout)
             throws IOException

Throws:

IOException