com.amazon.redshift.core

Class Tuple

java.lang.Object

com.amazon.redshift.core.Tuple

public class Tuple
extends Object

Class representing a row in a ResultSet.

Constructor Summary

Constructors

Constructor and Description
Tuple(byte[][] data) Construct a populated tuple.
Tuple(byte[][] data, int rowSize)
Tuple(int length) Construct an empty tuple.

Method Summary

Modifier and Type	Method and Description
int	fieldCount() Number of fields in the tuple
byte[]	get(int index) Get the data for the given field
int	getTupleSize() Total size in bytes (including overheads) of this Tuple instance on the heap (estimated)
int	length() Total length in bytes of the tuple data.
Tuple	readOnlyCopy() Create a read-only copy of the tuple
void	set(int index, byte[] fieldData) Set the given field to the given data.
Tuple	updateableCopy() Create a copy of the tuple for updating.

Methods inherited from class java.lang.Object

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

Constructor Detail

Tuple

public Tuple(int length)

Construct an empty tuple. Used in updatable result sets.

Parameters:

length - the number of fields in the tuple.

Tuple

public Tuple(byte[][] data)

Construct a populated tuple. Used when returning results.

Parameters:

data - the tuple data

Tuple

public Tuple(byte[][] data,
             int rowSize)

Method Detail

fieldCount

public int fieldCount()

Number of fields in the tuple

Returns:

number of fields

length

public int length()

Total length in bytes of the tuple data.

Returns:

the number of bytes in this tuple

getTupleSize

public int getTupleSize()

Total size in bytes (including overheads) of this Tuple instance on the heap (estimated)

Returns:

the estimated number of bytes of heap memory used by this tuple.

get

public byte[] get(int index)

Get the data for the given field

Parameters:

index - 0-based field position in the tuple

Returns:

byte array of the data

updateableCopy

public Tuple updateableCopy()

Create a copy of the tuple for updating.

Returns:

a copy of the tuple that allows updates

readOnlyCopy

public Tuple readOnlyCopy()

Create a read-only copy of the tuple

Returns:

a copy of the tuple that does not allow updates

set

public void set(int index,
                byte[] fieldData)

Set the given field to the given data.

Parameters:

index - 0-based field position

fieldData - the data to set