Package com.sleepycat.db

## Class LogSequenceNumber

- java.lang.Object
- - com.sleepycat.db.LogSequenceNumber

    public class LogSequenceNumber
    extends java.lang.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 Summary

Constructors
`LogSequenceNumber()` Construct an uninitialized LogSequenceNumber.
`LogSequenceNumber​(int file, int offset)` Construct a LogSequenceNumber with the specified file and offset.

### Method Summary

All Methods Static Methods Instance Methods Concrete Methods
`static int` `compare​(LogSequenceNumber lsn1, LogSequenceNumber lsn2)` Compare two LogSequenceNumber objects.
`int` `getFile()` Return the file number component of the LogSequenceNumber.
`int` `getOffset()` Return the file offset component of the LogSequenceNumber.

### Methods inherited from class java.lang.Object

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

### Constructor Detail

#### 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 Detail

#### 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.