com.db4o.internal.fileheader

Class FileHeader

java.lang.Object

com.db4o.internal.fileheader.FileHeader

Direct Known Subclasses:

NewFileHeaderBase

public abstract class FileHeader
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	TRANSACTION_POINTER_LENGTH

Constructor Summary

Constructors

Constructor and Description
FileHeader()

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	close()
abstract java.lang.Runnable	commit(boolean shuttingDown)
abstract void	completeInterruptedTransaction(LocalObjectContainer container)
FileHeader	convert(LocalObjectContainer file)
abstract void	initNew(LocalObjectContainer file)
abstract int	length()
static boolean	lockedByOtherSession(LocalObjectContainer container, long lastAccessTime)
static NewFileHeaderBase	newCurrentFileHeader()
protected abstract FileHeader	newOnSignatureMatch(LocalObjectContainer file, ByteArrayBuffer reader)
static FileHeader	read(LocalObjectContainer file)
protected abstract void	read(LocalObjectContainer file, ByteArrayBuffer reader)
abstract void	readIdentity(LocalObjectContainer container)
protected boolean	signatureMatches(ByteArrayBuffer reader, byte[] signature, byte version)
protected long	timeToWrite(long time, boolean shuttingDown)
abstract void	writeFixedPart(LocalObjectContainer file, boolean startFileLockingThread, boolean shuttingDown, StatefulBuffer writer, int blockSize)
abstract void	writeTransactionPointer(Transaction systemTransaction, int transactionPointer)
protected void	writeTransactionPointer(Transaction systemTransaction, int transactionPointer, int address, int offset)
void	writeVariablePart(LocalObjectContainer file)
abstract void	writeVariablePart(LocalObjectContainer file, boolean shuttingDown)

Methods inherited from class java.lang.Object

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

Field Detail

TRANSACTION_POINTER_LENGTH

public static final int TRANSACTION_POINTER_LENGTH

See Also:

Constant Field Values

Constructor Detail

FileHeader

public FileHeader()

Method Detail

newCurrentFileHeader

public static NewFileHeaderBase newCurrentFileHeader()

read

public static FileHeader read(LocalObjectContainer file)
                       throws OldFormatException

Throws:

OldFormatException

convert

public FileHeader convert(LocalObjectContainer file)

close

public abstract void close()
                    throws Db4oIOException

Throws:

Db4oIOException

initNew

public abstract void initNew(LocalObjectContainer file)
                      throws Db4oIOException

Throws:

Db4oIOException

completeInterruptedTransaction

public abstract void completeInterruptedTransaction(LocalObjectContainer container)

length

public abstract int length()

newOnSignatureMatch

protected abstract FileHeader newOnSignatureMatch(LocalObjectContainer file,
                             ByteArrayBuffer reader)

timeToWrite

protected long timeToWrite(long time,
               boolean shuttingDown)

read

protected abstract void read(LocalObjectContainer file,
        ByteArrayBuffer reader)

signatureMatches

protected boolean signatureMatches(ByteArrayBuffer reader,
                       byte[] signature,
                       byte version)

writeFixedPart

public abstract void writeFixedPart(LocalObjectContainer file,
                  boolean startFileLockingThread,
                  boolean shuttingDown,
                  StatefulBuffer writer,
                  int blockSize)

writeTransactionPointer

public abstract void writeTransactionPointer(Transaction systemTransaction,
                           int transactionPointer)

writeTransactionPointer

protected void writeTransactionPointer(Transaction systemTransaction,
                           int transactionPointer,
                           int address,
                           int offset)

writeVariablePart

public void writeVariablePart(LocalObjectContainer file)

writeVariablePart

public abstract void writeVariablePart(LocalObjectContainer file,
                     boolean shuttingDown)

lockedByOtherSession

public static boolean lockedByOtherSession(LocalObjectContainer container,
                           long lastAccessTime)

readIdentity

public abstract void readIdentity(LocalObjectContainer container)

commit

public abstract java.lang.Runnable commit(boolean shuttingDown)