net.sf.spif
Class HashStore

java.lang.Object
  |
  +--net.sf.spif.StoreChain
        |
        +--net.sf.spif.HashStore

public class HashStore

extends StoreChain

A store backed by a plain HashMap. Put is always propagated, get is never propagated.

Version:

$Id: HashStore.java,v 1.2 2003/02/05 22:15:44 bratseth Exp $

Author:

Jon S Bratseth

Field Summary

Fields inherited from class net.sf.spif.StoreChain

chained

Constructor Summary

HashStore()

Method Summary

void	clear() Forgets everything
java.lang.Object	get(Id id, boolean writeable) Returns an object from the store.
Id	put(Id id, java.lang.Object object) Puts an object in the store.
boolean	remove(Id id) Removes and propagates

Methods inherited from class net.sf.spif.StoreChain

equals, getChained, getChained, getChained, hashCode, setChained

Methods inherited from class java.lang.Object

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

Constructor Detail

HashStore

public HashStore()

Method Detail

get

public java.lang.Object get(Id id,
                            boolean writeable)

Description copied from class: StoreChain

Returns an object from the store.

This default implementation just forwards to the chained. for (optional) use by subclasses.

Overrides:

get in class StoreChain

Parameters:

id - the id of the object to return

Returns:

the object, or null if the object could not be retrieved or if the input id was null

put

public Id put(Id id,
              java.lang.Object object)

Description copied from class: StoreChain

Puts an object in the store. The objects may be new, or previously acquired by getting writeable. It is an error to attempt to put an existing object not previously acquired by getting writeable.

This default implementation just forwards to the chained. for (optional) use by subclasses.

Overrides:

put in class StoreChain

Parameters:

id - the id of the object to put. May be null

object - the object to put. May be null

Returns:

the id of this object. This will usually be (and is in this default implementation) the input id, unless the given id is null and there is an id generating service on the store chain

remove

public boolean remove(Id id)

Removes and propagates

Overrides:

remove in class StoreChain

Parameters:

id - the id of the object to remove

Returns:

true if the object did not exists

clear

public void clear()

Forgets everything

Overrides:

clear in class StoreChain