net.sf.joafip.btreeplus.entity

Class DataBlockPage

java.lang.Object

net.sf.joafip.btreeplus.entity.AbstractElement

net.sf.joafip.btreeplus.entity.DataBlockPage

All Implemented Interfaces:

IPageRecordable, IStateStored

@NotStorableClass
public class DataBlockPage
extends AbstractElement

Author:

luc peuvrier

Field Summary

Fields

Modifier and Type	Field and Description
static int	HEAD_SIZE
static int	HEAD_TAIL_SIZE

Constructor Summary

Constructors

Constructor and Description
DataBlockPage(byte bits)

Method Summary

Methods

Modifier and Type	Method and Description
static byte	bitsForLength(int length)
byte[]	getAllData()
byte	getBits()
int	getByteSize()
byte[]	getData(int indexInDataBlockPage)
IDataBlock	getDataBlock(int index)
IDataBlock	getDataBlock(long dataBlockPosition)
int	getInParentIndex()
long	getNextFreeDataBlockPositionOfFree(int indexInDataBlockPage)
int	getNumberOfBlock()
int	getNumberOfPage() the number of pages take is fix
IPageRecordable	getParentPage()
long	getPositionInFile(int index)
EnumRecordType	getRecordType()
protected byte	readByte()
protected void	readBytes(byte[] destination)
protected int	readInteger()
protected long	readLong()
void	setAllFree()
void	setData(int indexInDataBlockPage, byte[] data)
void	setNextFreeDataBlockPositionOfFree(int indexInDataBlockPage, long nextFreeDataBlockPosition)
void	setParentPage(IPageRecordable parentPage, int inParentIndex)
void	updateByteSize()
protected void	writeBytes(byte[] dataByteArray)
protected void	writeInteger(int value)
protected void	writeLong(long value)

Methods inherited from class net.sf.joafip.btreeplus.entity.AbstractElement

getPageRecord, getPositionInFile, getPreviousRecordPositionInFile, setPageRecord, setValueIsChangedValueToSave, setValueIsNotChanged

Methods inherited from class java.lang.Object

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

Field Detail

HEAD_SIZE

public static final int HEAD_SIZE

See Also:

Constant Field Values

HEAD_TAIL_SIZE

public static final int HEAD_TAIL_SIZE

See Also:

Constant Field Values

Constructor Detail

DataBlockPage

public DataBlockPage(byte bits)

Method Detail

bitsForLength

public static byte bitsForLength(int length)
                          throws HeapException

Throws:

HeapException

getRecordType

public EnumRecordType getRecordType()

getNumberOfPage

public int getNumberOfPage()

Description copied from interface: IPageRecordable

the number of pages take is fix

Returns:

number of page take by the record

getBits

public byte getBits()

updateByteSize

public void updateByteSize()

getByteSize

public int getByteSize()

Returns:

byte size of the element

getNumberOfBlock

public int getNumberOfBlock()

getAllData

public byte[] getAllData()

getDataBlock

public IDataBlock getDataBlock(int index)

getDataBlock

public IDataBlock getDataBlock(long dataBlockPosition)

getPositionInFile

public long getPositionInFile(int index)

setAllFree

public void setAllFree()
                throws HeapException

Throws:

HeapException

setParentPage

public void setParentPage(IPageRecordable parentPage,
                 int inParentIndex)
                   throws HeapException

Throws:

HeapException

getParentPage

public IPageRecordable getParentPage()
                              throws HeapException

Throws:

HeapException

getInParentIndex

public int getInParentIndex()
                     throws HeapException

Throws:

HeapException

setData

public void setData(int indexInDataBlockPage,
           byte[] data)
             throws HeapException

Throws:

HeapException

getData

public byte[] getData(int indexInDataBlockPage)
               throws HeapException

Throws:

HeapException

setNextFreeDataBlockPositionOfFree

public void setNextFreeDataBlockPositionOfFree(int indexInDataBlockPage,
                                      long nextFreeDataBlockPosition)
                                        throws HeapException

Throws:

HeapException

getNextFreeDataBlockPositionOfFree

public long getNextFreeDataBlockPositionOfFree(int indexInDataBlockPage)
                                        throws HeapException

Throws:

HeapException

readInteger

protected int readInteger()
                   throws HeapException

Throws:

HeapException

readByte

protected byte readByte()
                 throws HeapException

Throws:

HeapException

readBytes

protected void readBytes(byte[] destination)
                  throws HeapException

Throws:

HeapException

readLong

protected long readLong()
                 throws HeapException

Throws:

HeapException

writeBytes

protected void writeBytes(byte[] dataByteArray)
                   throws HeapException

Throws:

HeapException

writeLong

protected void writeLong(long value)
                  throws HeapException

Throws:

HeapException

writeInteger

protected void writeInteger(int value)
                     throws HeapException

Throws:

HeapException