/*
This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2010 Servoy BV
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Affero General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your option) any
later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along
with this program; if not, see http://www.gnu.org/licenses or write to the Free
Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
*/
package com.servoy.j2db.persistence;
public class Sequence
{
protected long seq;
protected int seq_cache_size;
public Sequence(long start_seq, int seq_cache_size)
{
seq = start_seq;
this.seq_cache_size = seq_cache_size;
}
/**
* Warning all calls to this method needs to be synchronized by them selfs!!!
*/
public long getNextVal()
{
if (seq_cache_size > 0)
{
long retval = seq;
seq++;
seq_cache_size--;
return retval;
}
else
{
return -1;
}
}
}