Examples of org.chaidb.db.log.Lsn

org.chaidb.db.log.Lsn
The log sequence number
A DB_LSN has two parts, a fileid which identifies a specific file, and an offset within that file. The fileid is an unsigned 4-byte quantity that uniquely identifies a file within the log directory -- currently a simple counter inside the log. The offset is also an unsigned 4-byte value. The log manager guarantees the offset is never more than 4 bytes by switching to a new log file before the maximum length imposed by an unsigned 4-byte offset is reached.

     */
    public Lsn getLastLsnOfChildTxn() {
        if (lastLsnOfChildTxn == null) {
            return null;
        }
        return new Lsn(lastLsnOfChildTxn);
    }

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     * user interface to add a log record and put it to buffer pool
     */
    public Lsn log() throws ChaiDBException {
        super.log();
        LogManager logMgr = Db.getLogManager();
        Lsn newLsn = logMgr.put(this, LogManager.LOG_CHILD_FLUSH);


        return newLsn;
    }

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    private final String filename; //name of current file
    private final Lsn firstLsn;


    public TxnQueue(Integer txnId, Lsn firstLsn, String path) {
        this.txnId = txnId;
        this.firstLsn = new Lsn(firstLsn);
        this.path = path;
        filename = path + File.separator + "txn_" + Integer.toHexString(txnId.intValue());
    }

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Related Classes of org.chaidb.db.log.Lsn

org.chaidb.db.log.logrecord.BTreeLogRecord

org.chaidb.db.log.logrecord.BTreeSpecLogRecord

org.chaidb.db.log.logrecord.FileOperationLogRecord

org.chaidb.db.log.logrecord.FilesDeleteLogRecord

org.chaidb.db.log.logrecord.TxnChildLogRecord

org.chaidb.db.log.logrecord.TxnCkpLogRecord

org.chaidb.db.log.logrecord.TxnFuzzyCkpLogRecord

org.chaidb.db.log.logrecord.TxnRegopLogRecord

org.chaidb.db.transaction.Checkpoint

org.chaidb.db.transaction.CheckpointThread

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