edu.sdsc.inca.depot.persistent
Class ArgSignatureDAO

java.lang.Object
  extended by edu.sdsc.inca.depot.persistent.DAO
      extended by edu.sdsc.inca.depot.persistent.ArgSignatureDAO

public class ArgSignatureDAO
extends DAO

This class transfers ArgSignature objects between memory and the DB.


Field Summary
 
Fields inherited from class edu.sdsc.inca.depot.persistent.DAO
logger
 
Constructor Summary
ArgSignatureDAO()
           
 
Method Summary
static ArgSignature load(ArgSignature as)
          Returns an ArgSignature object from the DB with the same field values as one specified, or null if no such object appears in the DB.
static ArgSignature loadOrSave(ArgSignature as)
          Returns an ArgSignature 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 ArgSignature update(ArgSignature as)
          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

ArgSignatureDAO

public ArgSignatureDAO()
Method Detail

load

public static ArgSignature load(ArgSignature as)
                         throws PersistenceException
Returns an ArgSignature object from the DB with the same field values as one specified, or null if no such object appears in the DB.

Parameters:
as - 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 ArgSignature loadOrSave(ArgSignature as)
                               throws PersistenceException
Returns an ArgSignature 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:
as - 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 ArgSignature update(ArgSignature as)
                           throws PersistenceException
A wrapper around DAO.update that handles the necessary casting.

Parameters:
as - the object to update
Returns:
as, for convenience
Throws:
PersistenceException - on error