edu.sdsc.inca.depot.persistent
Class ReportDAO

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

public class ReportDAO
extends DAO

This class transfers Report objects between memory and the DB.

Field Summary

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

logger

Constructor Summary

ReportDAO()

Method Summary

static Report	load(java.lang.Long id) Returns a Report object from the DB with the id specified, null if no such object appears in the DB.
static Report	load(Report r) Returns a Report object from the DB with the same field values as one specified, null if no such object appears in the DB.
static Report	loadOrSave(Report r) Returns a Report 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 Report	update(Report r) 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

ReportDAO

public ReportDAO()

Method Detail

load

public static Report load(Report r)
                   throws PersistenceException

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

Parameters:

r - 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

load

public static Report load(java.lang.Long id)
                   throws PersistenceException

Returns a Report object from the DB with the id specified, null if no such object appears in the DB.

Parameters:

id - the id of the object to be retrieved

Returns:

an object from the DB marked with the given id

Throws:

PersistenceException - on err

loadOrSave

public static Report loadOrSave(Report r)
                         throws PersistenceException

Returns a Report 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:

r - 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 Report update(Report r)
                     throws PersistenceException

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

Parameters:

r - the object to update

Returns:

r, for convenience

Throws:

PersistenceException - on error