ants.jxtagnutant
Class UrlStorage

java.lang.Object
  |
  +--anthill.storage.impl.LRUKeyStorage
        |
        +--anthill.storage.impl.LRUQueryStorage
              |
              +--ants.jxtagnutant.UrlStorage

All Implemented Interfaces:

Clearable, GenericStorage, QueryStorage, ResourceManager, Storage

public class UrlStorage

extends LRUQueryStorage

implements QueryStorage

Implementation of an Least Recently Used (LRU) based URL storage.

Version:

$Revision: 1.3 $

Author:

Hein Meling

Field Summary

Fields inherited from class anthill.storage.impl.LRUQueryStorage

PAR_CONTROLLERNAME

Fields inherited from class anthill.storage.impl.LRUKeyStorage

factory, list, name, PAR_STORAGENAME, storage

Fields inherited from interface anthill.storage.Storage

DOC_STORAGE, PHR_STORAGE, URL_STORAGE

Constructor Summary

UrlStorage(Factory factory, String name)

Method Summary

void	addResource(Object resourceKey, Resource urlResource) Adds a resource to the storage and associates it to the specified key.
Resource[]	getResources(Object query) Return the resource associated with the specified query.

Methods inherited from class anthill.storage.impl.LRUQueryStorage

clear

Methods inherited from class anthill.storage.impl.LRUKeyStorage

containsResource, getCapacity, getRemainingCapacity, getResource, iterator, removeResource

Methods inherited from class java.lang.Object

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

Methods inherited from interface anthill.storage.GenericStorage

containsResource, getCapacity, getRemainingCapacity, getResource, iterator, removeResource

Methods inherited from interface anthill.util.Clearable

clear

Constructor Detail

UrlStorage

public UrlStorage(Factory factory,
                  String name)

Method Detail

addResource

public void addResource(Object resourceKey,
                        Resource urlResource)
                 throws CapacityException

Adds a resource to the storage and associates it to the specified key. If the remaining capacity of the storage is not sufficient to store the resource, a CapacityException is thrown containing information about the remaining capacity. Method size() may be invoked on the resource to determine the amount of space required by the resource. In order to be stored on persistent storage, resource must implement the Serializable interface. This is a specialized implementation that will add URLs pointing to a file with the same resourceKey to a URL resource set before adding that URL set to the storage.

Specified by:

addResource in interface GenericStorage

Overrides:

addResource in class LRUKeyStorage

Parameters:

resourceKey - the key identifying the URL resource

urlResource - the URL resource to be added

Throws:

CapacityException - raised if the given resource object exceeds the total available capacity for this storage.

getResources

public Resource[] getResources(Object query)

Description copied from interface: QueryStorage

Return the resource associated with the specified query.

Specified by:

getResources in interface QueryStorage

Overrides:

getResources in class LRUQueryStorage

Parameters:

query - whose associated resource to retreive.

Returns:

resources found in the storage with which the specified query matched.