Quadcap Embeddable Database

com.quadcap.sql.file.Logger Interface Reference

Inheritance diagram for com.quadcap.sql.file.Logger:

List of all members.

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Detailed Description

Author:

Stan Bailes

Definition at line 52 of file Logger.java.

Public Member Functions
void	init (Log log, boolean create, Properties props) throws IOException
	Initialization.
Package Functions
void	sync () throws IOException
	Make it so.
void	checkpoint () throws IOException
	Checkpoint.
void	close () throws IOException
	Dismissed.
void	reset () throws IOException
	Reset the entire log to be empty.
long	getOldestTransaction ()
	Return the id of the oldest active transaction.
int	getActiveTransactionCount ()
	Return the number of active transactions.
LongMap	getActiveTransactions ()
	Return a map containing the active transaction ids as keys.
void	put (LogEntry op) throws IOException
	Write a single op to the buffer.
void	setRedoState (LogEntry op, int state) throws IOException
	Set the 'redo' value for the most recently read LogEntry.
LogEntry	getLastOp (long t) throws IOException
	Return the last op in the log for the specified transaction.
LogEntry	getPrevOp (LogEntry op) throws IOException
	Return the preceding op (of the same transaction).
LogEntry	getFirstOp () throws IOException
	Return the first op in the log.
LogEntry	getNextOp () throws IOException
	Return the next op.
int	getCheckpoint ()
	Return the position of the last checkpoint.
int	getEnd ()
	Return the end position of the log buffer.

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Member Function Documentation

void com.quadcap.sql.file.Logger.checkpoint (   )  throws IOException [package]

Checkpoint. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyCheckpoint().

void com.quadcap.sql.file.Logger.close (   )  throws IOException [package]

Dismissed. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log2.close().

int com.quadcap.sql.file.Logger.getActiveTransactionCount (   )  [package]

Return the number of active transactions. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.maybeCheckpoint(), and com.quadcap.sql.file.Log1.reallyCheckpoint().

LongMap com.quadcap.sql.file.Logger.getActiveTransactions (   )  [package]

Return a map containing the active transaction ids as keys. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyCheckpoint().

int com.quadcap.sql.file.Logger.getCheckpoint (   )  [package]

Return the position of the last checkpoint. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyRestart().

int com.quadcap.sql.file.Logger.getEnd (   )  [package]

Return the end position of the log buffer. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyRestart().

LogEntry com.quadcap.sql.file.Logger.getFirstOp (   )  throws IOException [package]

Return the first op in the log. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyRestart(), and com.quadcap.sql.file.Log1.scanLog().

LogEntry com.quadcap.sql.file.Logger.getLastOp (  long  t  )  throws IOException [package]

Return the last op in the log for the specified transaction. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyRollbackStatement(), and com.quadcap.sql.file.Log1.reallyRollbackTransaction().

LogEntry com.quadcap.sql.file.Logger.getNextOp (   )  throws IOException [package]

Return the next op. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyRestart(), and com.quadcap.sql.file.Log1.scanLog().

long com.quadcap.sql.file.Logger.getOldestTransaction (   )  [package]

Return the id of the oldest active transaction. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.abortOldestTransaction().

LogEntry com.quadcap.sql.file.Logger.getPrevOp (  LogEntry  op  )  throws IOException [package]

Return the preceding op (of the same transaction). Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyRestart(), com.quadcap.sql.file.Log1.reallyRollbackStatement(), and com.quadcap.sql.file.Log1.reallyRollbackTransaction().

void com.quadcap.sql.file.Logger.init (  Log  log, boolean  create, Properties  props )  throws IOException

Initialization. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.init().

void com.quadcap.sql.file.Logger.put (  LogEntry  op  )  throws IOException [package]

Write a single op to the buffer. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyAddEntry().

void com.quadcap.sql.file.Logger.reset (   )  throws IOException [package]

Reset the entire log to be empty. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.abortOldestTransaction(), com.quadcap.sql.file.Log1.reallyCheckpoint(), and com.quadcap.sql.file.Log1.reallyRestart().

void com.quadcap.sql.file.Logger.setRedoState (  LogEntry  op, int  state )  throws IOException [package]

Set the 'redo' value for the most recently read LogEntry. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyRollbackStatement(), and com.quadcap.sql.file.Log1.reallyRollbackTransaction().

void com.quadcap.sql.file.Logger.sync (   )  throws IOException [package]

Make it so. Implemented in com.quadcap.sql.file.Logger1. Referenced by com.quadcap.sql.file.Log1.reallyCheckpoint(), com.quadcap.sql.file.Log1.reallyFlush(), and com.quadcap.sql.file.Log1.reallyRestart().