org.tentackle.db
Class TableSerialExpirationBacklog

java.lang.Object
  org.tentackle.db.TableSerialExpirationBacklog

public class TableSerialExpirationBacklog
extends Object

Keeps a backlog of expiration sets.
Used in RMI-servers to reduce database roundtrips for clients requesting the expiration info for their local caches.

Author:

harald

Constructor Summary

TableSerialExpirationBacklog()
Creates a backlog with a default size.

TableSerialExpirationBacklog(int size)
Creates a backlog.

Method Summary

void	addExpiration(long minSerial, long maxSerial, long[] idSer) Adds an expiration set to the backlog.
long[]	getExpiration(long minSerial, long maxSerial) Gets the expiration backlog for a given range of tableserials.

Methods inherited from class java.lang.Object

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

Constructor Detail

TableSerialExpirationBacklog

public TableSerialExpirationBacklog(int size)

Creates a backlog.

Parameters:

size - the size of the backlog

TableSerialExpirationBacklog

public TableSerialExpirationBacklog()

Creates a backlog with a default size.

Method Detail

addExpiration

public void addExpiration(long minSerial,
                          long maxSerial,
                          long[] idSer)

Adds an expiration set to the backlog.

Parameters:

minSerial - the lower serial bound of the query (minSerial < tableSerial)

maxSerial - the upper serial bound of the query (tableSerial <= maxSerial)

idSer - the expiration info as pairs of id/tableserial.

getExpiration

public long[] getExpiration(long minSerial,
                            long maxSerial)

Gets the expiration backlog for a given range of tableserials.

Parameters:

minSerial - the lower serial bound of the query (minSerial < tableSerial)

maxSerial - the upper serial bound of the query (tableSerial <= maxSerial)

Returns:

the expiration info as pairs of id/tableserial, null if given range was not found in the backlog