org.dspace.checker
Class ChecksumHistoryDAO

java.lang.Object
  org.dspace.checker.DAOSupport
      org.dspace.checker.ChecksumHistoryDAO

public class ChecksumHistoryDAO
extends DAOSupport

This is the data access for the checksum history information. All update,insert and delete database operations should go through this class for checksum history operations.

Author:

Jim Downing, Grace Carpenter, Nathan Sarr

Constructor Summary

ChecksumHistoryDAO()

Method Summary

protected int	deleteHistoryByDateAndCode(Date retentionDate, String result, Connection conn) Delete the history records from the database.
protected int	deleteHistoryForBitstreamInfo(int id, Connection conn) Deletes the bitstream from the bitstream_history table if it exist.
void	insertHistory(BitstreamInfo info) Inserts results of checksum check into checksum_history table for a given bitstream.
int	prune(Map<String,Long> interests) Prune the history records from the database.
protected void	updateMissingBitstreams(Connection conn)

Methods inherited from class org.dspace.checker.DAOSupport

cleanup, cleanup, cleanup, cleanup

Methods inherited from class java.lang.Object

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

Constructor Detail

ChecksumHistoryDAO

public ChecksumHistoryDAO()

Method Detail

insertHistory

public void insertHistory(BitstreamInfo info)

Inserts results of checksum check into checksum_history table for a given bitstream.

Parameters:

info - the BitstreamInfo representing a checksum check.

Throws:

IllegalArgumentException - if the BitstreamInfo is null.

deleteHistoryForBitstreamInfo

protected int deleteHistoryForBitstreamInfo(int id,
                                            Connection conn)

Deletes the bitstream from the bitstream_history table if it exist.

Parameters:

id - the bitstream id.

Returns:

number of records deleted

updateMissingBitstreams

protected void updateMissingBitstreams(Connection conn)
                                throws SQLException

Parameters:

conn -

Throws:

SQLException

deleteHistoryByDateAndCode

protected int deleteHistoryByDateAndCode(Date retentionDate,
                                         String result,
                                         Connection conn)
                                  throws SQLException

Delete the history records from the database.

Parameters:

retentionDate - any records older than this data are deleted.

result - result code records must have for them to be deleted.

conn - database connection.

Returns:

number of records deleted.

Throws:

SQLException - if database error occurs.

prune

public int prune(Map<String,Long> interests)

Prune the history records from the database.

Parameters:

interests - set of results and the duration of time before they are removed from the database

Returns:

number of bitstreams deleted