org.dspace.checker

Class ResultsPruner

java.lang.Object

org.dspace.checker.ResultsPruner

public final class ResultsPruner
extends Object

Manages the deletion of results from the checksum history. It uses the dspace.cfg file as the default configuration file for the deletion settings and can use a different configuration file if it is passed in.

Author:

Jim Downing, Grace Carpenter, Nathan Sarr

Constructor Summary

Constructors

Constructor and Description
ResultsPruner(Context context) Default Constructor

Method Summary

Modifier and Type	Method and Description
void	addInterested(ChecksumResultCode result, long duration) Add a result and the length of time before the history with this type of result is removed from the database.
void	addInterested(ChecksumResultCode result, String duration) Add a result and the length of time before it is removed from the checksum history table.
long	getDefaultDuration() The default amount of time before a result is removed.
static ResultsPruner	getDefaultPruner(Context context) Factory method for the default results pruner configuration using dspace.cfg
static ResultsPruner	getPruner(Context context, Properties props) Factory method for ResultsPruners (used to load ConfigurationManager properties.
static ResultsPruner	getPruner(Context context, String propsFile) Factory method for ResultsPruners
int	prune() Prunes the results retaining results as configured by the interests registered with this object.
void	setDefaultDuration(long defaultDuration) The default duration before records are removed from the checksum history table.

Methods inherited from class java.lang.Object

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

Constructor Detail

ResultsPruner

public ResultsPruner(Context context)

Default Constructor

Parameters:

context - Context

Method Detail

getDefaultPruner

public static ResultsPruner getDefaultPruner(Context context)

Factory method for the default results pruner configuration using dspace.cfg

Parameters:

context - Context

Returns:

a ResultsPruner that represent the default retention policy

getPruner

public static ResultsPruner getPruner(Context context,
                                      String propsFile)
                               throws FileNotFoundException

Factory method for ResultsPruners

Parameters:

context - Context

propsFile - to configure the results pruner.

Returns:

the configured results pruner.

Throws:

FileNotFoundException - if file doesn't exist it the configuration file cannot be found.

getPruner

public static ResultsPruner getPruner(Context context,
                                      Properties props)
                               throws FileNotFoundException

Factory method for ResultsPruners (used to load ConfigurationManager properties.

Parameters:

context - Context

props - Properties

Returns:

pruner

Throws:

FileNotFoundException - if file doesn't exist

addInterested

public void addInterested(ChecksumResultCode result,
                          long duration)

Add a result and the length of time before the history with this type of result is removed from the database.

Parameters:

result - code in the database.

duration - before bitstreams with the specified result type in the checksum history is removed.

addInterested

public void addInterested(ChecksumResultCode result,
                          String duration)
                   throws ParseException

Add a result and the length of time before it is removed from the checksum history table.

Parameters:

result - code in the database.

duration - before bitstreams with the specified result type in the checksum history is removed.

Throws:

ParseException - if the duration cannot be parsed into a long value.

getDefaultDuration

public long getDefaultDuration()

The default amount of time before a result is removed.

Returns:

the default duration.

prune

public int prune()
          throws SQLException

Prunes the results retaining results as configured by the interests registered with this object.

Returns:

number of results removed.

Throws:

SQLException - if database error

setDefaultDuration

public void setDefaultDuration(long defaultDuration)

The default duration before records are removed from the checksum history table.

Parameters:

defaultDuration - used before records are removed from the checksum history.