edu.sdsc.inca.depot.persistent
Class RunInfoDAO

java.lang.Object
  edu.sdsc.inca.depot.persistent.DAO
      edu.sdsc.inca.depot.persistent.RunInfoDAO

public class RunInfoDAO
extends DAO

This class transfers RunInfo objects between memory and the DB.

Field Summary

Fields inherited from class edu.sdsc.inca.depot.persistent.DAO

logger

Constructor Summary

RunInfoDAO()

Method Summary

static RunInfo	load(RunInfo ri) Returns a RunInfo from the DB with the same field values as one specified, null if no such RunInfo appears in the DB.
static RunInfo	loadOrSave(RunInfo ri) Returns a RunInfo object from the DB with the same field values as one specified, or the saved version of the specified object if no such object appears in the DB.
static RunInfo	update(RunInfo ri) A wrapper around DAO.update that handles the necessary casting.

Methods inherited from class edu.sdsc.inca.depot.persistent.DAO

save, selectMultiple, selectUnique, update

Methods inherited from class java.lang.Object

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

Constructor Detail

RunInfoDAO

public RunInfoDAO()

Method Detail

load

public static RunInfo load(RunInfo ri)
                    throws PersistenceException

Returns a RunInfo from the DB with the same field values as one specified, null if no such RunInfo appears in the DB.

Parameters:

ri - an object that contains field values used in the retrieval

Returns:

an object from the DB that contains the same values

Throws:

PersistenceException - on err

loadOrSave

public static RunInfo loadOrSave(RunInfo ri)
                          throws PersistenceException

Returns a RunInfo object from the DB with the same field values as one specified, or the saved version of the specified object if no such object appears in the DB. Synchronized to avoid race conditions that could result in DB duplicates.

Parameters:

ri - an object that contains field values used in the retrieval

Returns:

an object from the DB that contains the same values

Throws:

PersistenceException - on err

update

public static RunInfo update(RunInfo ri)
                      throws PersistenceException

A wrapper around DAO.update that handles the necessary casting.

Parameters:

ri - the object to update

Returns:

ri for convenience

Throws:

PersistenceException - on error