Package com.sleepycat.db

Class LogSequenceNumber

java.lang.Object
com.sleepycat.db.LogSequenceNumber
public class LogSequenceNumber extends Object
The LogSequenceNumber object is a log sequence number which specifies a unique location in a log file. A LogSequenceNumber consists of two unsigned 32-bit integers -- one specifies the log file number, and the other specifies the offset in the log file.

  • Constructor Details

    • LogSequenceNumber

      public LogSequenceNumber(int file, int offset)
      Construct a LogSequenceNumber with the specified file and offset.

      Parameters:
      file - The log file number.

      offset - The log file offset.

    • LogSequenceNumber

      public LogSequenceNumber()
      Construct an uninitialized LogSequenceNumber.

  • Method Details

    • getFile

      public int getFile()
      Return the file number component of the LogSequenceNumber.

      Returns:
      The file number component of the LogSequenceNumber.

    • getOffset

      public int getOffset()
      Return the file offset component of the LogSequenceNumber.

      Returns:
      The file offset component of the LogSequenceNumber.

    • compare

      public static int compare(LogSequenceNumber lsn1, LogSequenceNumber lsn2)
      Compare two LogSequenceNumber objects.

      This method returns 0 if the two LogSequenceNumber objects are equal, 1 if lsn0 is greater than lsn1, and -1 if lsn0 is less than lsn1.

      Parameters:
      lsn1 - The first LogSequenceNumber object to be compared.

      lsn2 - The second LogSequenceNumber object to be compared.

      Returns:
      0 if the two LogSequenceNumber objects are equal, 1 if lsn1 is greater than lsn2, and -1 if lsn1 is less than lsn2.