org.xerial.db
Class TupleImpl

java.lang.Object
  org.xerial.db.AbstractTuple
      org.xerial.db.TupleImpl

All Implemented Interfaces:

Tuple

public class TupleImpl
extends AbstractTuple

A simple implementation of the Tuple interface

Author:

leo

Constructor Summary

TupleImpl(Relation relation, String[] value)

Method Summary

int	getByteSize() Gets the byte size of this tuple
Object	getValue(int relationIndex) Gets the column value
int	load(BufferReader reader) Loads the tuple from the buffer
int	save(BufferWriter writer) Saves the tuple to the buffer
void	setValue(int relationIndex, Object value) Sets the tuple value of the specified column

Methods inherited from class org.xerial.db.AbstractTuple

getRelation, getValue, setValue

Methods inherited from class java.lang.Object

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

Constructor Detail

TupleImpl

public TupleImpl(Relation relation,
                 String[] value)

Method Detail

getValue

public Object getValue(int relationIndex)

Description copied from interface: Tuple

Gets the column value

Specified by:

getValue in interface Tuple

Specified by:

getValue in class AbstractTuple

Parameters:

relationIndex - the column index from which the value is read

Returns:

the column value of the specfied column index

setValue

public void setValue(int relationIndex,
                     Object value)

Description copied from interface: Tuple

Sets the tuple value of the specified column

Specified by:

setValue in interface Tuple

Specified by:

setValue in class AbstractTuple

Parameters:

relationIndex - the column index to which the value is set

value - the column value to set

getByteSize

public int getByteSize()

Description copied from interface: Tuple

Gets the byte size of this tuple

Returns:

the byte size of this tuple

load

public int load(BufferReader reader)

Description copied from interface: Tuple

Loads the tuple from the buffer

Parameters:

reader - the BufferReader

Returns:

the byte size read (tuple size)

save

public int save(BufferWriter writer)

Description copied from interface: Tuple

Saves the tuple to the buffer

Parameters:

writer - the BufferWriter

Returns:

the byte size wrote (tuple size)