net.sf.joafip.btreeplus.entity

Class DataBlock

java.lang.Object

net.sf.joafip.btreeplus.entity.DataBlock

All Implemented Interfaces:

IDataBlock

@NotStorableClass
public class DataBlock
extends Object
implements IDataBlock

Author:

luc peuvrier

Constructor Summary

Constructors

Constructor and Description
DataBlock(DataBlockPage dataBlockPage, int indexInDataBlockPage, byte bits, int minDataSize, int maxDataSize)

Method Summary

Methods

Modifier and Type	Method and Description
byte	getBits()
byte[]	getData()
DataBlockPage	getDataBlockPage()
int	getIndexInDataBlockPage()
int	getIndexInLeafPage()
int	getMaxDataSize()
int	getMinDataSize()
long	getNextFreeDataBlockPositionOfFree() make sense to be call only if this is a free data block
LeafPage	getParentLeafPage()
long	getPositionInFile()
void	setData(byte[] data)
void	setNextFreeDataBlockPositionOfFree(long nextFreeDataBlockPosition) the next free data block position is wrote on data, must be call only if this is a free data block
void	setParent(LeafPage parentLeafPage, int indexInLeafPage)

Methods inherited from class java.lang.Object

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

Constructor Detail

DataBlock

public DataBlock(DataBlockPage dataBlockPage,
         int indexInDataBlockPage,
         byte bits,
         int minDataSize,
         int maxDataSize)

Method Detail

getMinDataSize

public int getMinDataSize()

Specified by:

getMinDataSize in interface IDataBlock

getMaxDataSize

public int getMaxDataSize()

Specified by:

getMaxDataSize in interface IDataBlock

getBits

public byte getBits()

Specified by:

getBits in interface IDataBlock

getDataBlockPage

public DataBlockPage getDataBlockPage()

getIndexInDataBlockPage

public int getIndexInDataBlockPage()

Specified by:

getIndexInDataBlockPage in interface IDataBlock

setData

public void setData(byte[] data)
             throws HeapException

Specified by:

setData in interface IDataBlock

Throws:

HeapException

getData

public byte[] getData()
               throws HeapException

Specified by:

getData in interface IDataBlock

Throws:

HeapException

setNextFreeDataBlockPositionOfFree

public void setNextFreeDataBlockPositionOfFree(long nextFreeDataBlockPosition)
                                        throws HeapException

Description copied from interface: IDataBlock

the next free data block position is wrote on data, must be call only if this is a free data block

Specified by:

setNextFreeDataBlockPositionOfFree in interface IDataBlock

Throws:

HeapException

getNextFreeDataBlockPositionOfFree

public long getNextFreeDataBlockPositionOfFree()
                                        throws HeapException

Description copied from interface: IDataBlock

make sense to be call only if this is a free data block

Specified by:

getNextFreeDataBlockPositionOfFree in interface IDataBlock

Returns:

next free data block position

Throws:

HeapException

getPositionInFile

public long getPositionInFile()

Specified by:

getPositionInFile in interface IDataBlock

setParent

public void setParent(LeafPage parentLeafPage,
             int indexInLeafPage)

Specified by:

setParent in interface IDataBlock

getParentLeafPage

public LeafPage getParentLeafPage()

Specified by:

getParentLeafPage in interface IDataBlock

getIndexInLeafPage

public int getIndexInLeafPage()

Specified by:

getIndexInLeafPage in interface IDataBlock