Package db

Class DatabaseUtils

java.lang.Object

db.DatabaseUtils

public class DatabaseUtils
extends Object

DatabaseUtils provides a collection of database related utilities.

Method Summary

Modifier and Type	Method	Description
static void	moveRecords(Table table, long oldStart, long newStart, long size)	Reassign the long key assigned to a contiguous group of records within a table.

Methods inherited from class java.lang.Object

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

Method Details

moveRecords

public static void moveRecords(Table table,
 long oldStart,
 long newStart,
 long size)
                        throws IOException

Reassign the long key assigned to a contiguous group of records within a table. A shift in the key value is computed as the difference of oldStart and newStart. Existing records whose keys lie within the new range will be removed prior to moving the target set of records.

Parameters:

table - table within which records should be moved.

oldStart - old key value for start of range

newStart - new key value for start of range

size - determines the range of keys to be moved (oldStart to oldStart+size-1, inclusive)

Throws:

IOException - if there is an error moving the records