org.gcube.common.searchservice.searchlibrary.GarbageCollector

Class GCHelper

java.lang.Object

org.gcube.common.searchservice.searchlibrary.GarbageCollector.GCHelper

public class GCHelper
extends Object

Helper class providing methods to navigate through a ResultSet chain and for retrieving properties that are interesting to the GarbageCollect

Author:

UoA

Constructor Summary

Constructors

Constructor and Description
GCHelper()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	alreadyChecked(String filename, MessageDigest algorithm, Set<String> checked) Checks if a file has already been checked for deletion either it sel or as part of a travered chain and if it hasn't makes it us checked
static String	goToHead(String filename, GCProperties props) Goes to the head part of the ResultSet whose member is the part that is stored in the provided filename and populates the properties
static String	goToLast(String filename, GCProperties props) Goes to the last part of the ResultSet whose member is the part that is stored in the provided filename and populates the properties
static void	headPoperties(String filename, GCProperties props) Populates the properties of the ResultSet whose head part is stored in the provided filename
static void	tailPoperties(String filename, GCProperties props) Populates the properties of the ResultSet whose last part is stored in the provided filename

Methods inherited from class java.lang.Object

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

Constructor Detail

GCHelper

public GCHelper()

Method Detail

goToLast

public static String goToLast(String filename,
              GCProperties props)

Goes to the last part of the ResultSet whose member is the part that is stored in the provided filename and populates the properties

Parameters:

filename - The filename that stores the part whose end must be reached

props - The properties of the ResultSet that must be populated

Returns:

The filename of the last part

goToHead

public static String goToHead(String filename,
              GCProperties props)

Goes to the head part of the ResultSet whose member is the part that is stored in the provided filename and populates the properties

Parameters:

filename - The filename that stores the part whose head must be reached

props - The properties of the ResultSet that must be populated

Returns:

The filename of the head part

headPoperties

public static void headPoperties(String filename,
                 GCProperties props)

Populates the properties of the ResultSet whose head part is stored in the provided filename

Parameters:

filename - The filename storing the head part of the ResultSet

props - The properties of the ResultSet

tailPoperties

public static void tailPoperties(String filename,
                 GCProperties props)

Populates the properties of the ResultSet whose last part is stored in the provided filename

Parameters:

filename - The filename storing the last part of the ResultSet

props - The properties of the ResultSet

alreadyChecked

public static boolean alreadyChecked(String filename,
                     MessageDigest algorithm,
                     Set<String> checked)

Checks if a file has already been checked for deletion either it sel or as part of a travered chain and if it hasn't makes it us checked

Parameters:

filename - The file to check

algorithm - The encription algorithm used to create a hash of the filename name

checked - The set of checked files

Returns:

true if the file has been checked, false otherwise