net.sourceforge.neurosdbm.db
Class MDBRecord

java.lang.Object
  net.sourceforge.neurosdbm.db.MDBRecord

Direct Known Subclasses:

AdvAudioRecord, AlbumRecord, ArtistRecord, AudioRecord, FailedHiSiRecord, GenreRecord, IdedHiSiRecord, NullRecord, PlaylistRecord, RecordingRecord, UnidedHiSiRecord

public abstract class MDBRecord

extends java.lang.Object

Field Summary

protected java.util.ArrayList	accessKeyArrayList
private int	countedLength
protected boolean	deleted
protected java.util.ArrayList	extraInfoArrayList
protected int	key
protected WordString	primary
private int	recordLength

Constructor Summary

protected	MDBRecord(int key)
	MDBRecord(int key, java.nio.ByteBuffer bytes, int wordOffset, int numAccessKeys, int numExtraInfo)

Method Summary

private int	computeRecordLength() Computes the length of this record in bytes.
(package private) abstract void	generatePointers()
(package private) int	getCountedLength() This function returns the counted length of this record (the actual size in bytes of the record on disk when read.) This value is only valid if the MDBRecord has been loaded from disk.
(package private) int	getKey()
WordString	getPrimary()
(package private) int	getRecordLength() Returns the length of this record (in bytes.) Record lenghts are computed lazily, and are only computed when needed (a generatePointers by controling MDB file.)
(package private) void	invalidateRecordLength() This function invalidates the computed record length.
java.lang.String	toString()
(package private) void	write(NIOFile file) This function writes this record to the end of of the passed in NIOFile.

Methods inherited from class java.lang.Object

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

Field Detail

recordLength

private int recordLength

countedLength

private int countedLength

deleted

protected boolean deleted

primary

protected WordString primary

accessKeyArrayList

protected java.util.ArrayList accessKeyArrayList

extraInfoArrayList

protected java.util.ArrayList extraInfoArrayList

key

protected int key

Constructor Detail

MDBRecord

protected MDBRecord(int key)

MDBRecord

public MDBRecord(int key,
                 java.nio.ByteBuffer bytes,
                 int wordOffset,
                 int numAccessKeys,
                 int numExtraInfo)

Method Detail

generatePointers

abstract void generatePointers()

getCountedLength

int getCountedLength()

This function returns the counted length of this record (the actual size in bytes of the record on disk when read.) This value is only valid if the MDBRecord has been loaded from disk.

invalidateRecordLength

void invalidateRecordLength()

This function invalidates the computed record length. This function must be called if the record length is changed in any way. For example if a playlist is added to an audio record.

getRecordLength

int getRecordLength()

Returns the length of this record (in bytes.) Record lenghts are computed lazily, and are only computed when needed (a generatePointers by controling MDB file.)

computeRecordLength

private int computeRecordLength()

Computes the length of this record in bytes.

write

void write(NIOFile file)
     throws java.io.IOException,
            DatabaseInternalCorruptionException

This function writes this record to the end of of the passed in NIOFile.

Throws:

java.io.IOException

DatabaseInternalCorruptionException

getKey

int getKey()

toString

public java.lang.String toString()

getPrimary

public WordString getPrimary()