de.lmu.ifi.dbs.elki.database.datastore.memory

Class ArrayStore<T>

java.lang.Object

de.lmu.ifi.dbs.elki.database.datastore.memory.ArrayStore<T>

Type Parameters:

T - Representation object typ

All Implemented Interfaces:

DataStore<T>, WritableDataStore<T>

public class ArrayStore<T>
extends java.lang.Object
implements WritableDataStore<T>

A class to answer representation queries using the stored Array.

Since:

0.4.0

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.Object[]	data Data array.
private DataStoreIDMap	idmap DBID to index map.

Constructor Summary

Constructors

Constructor and Description
ArrayStore(java.lang.Object[] data, DataStoreIDMap idmap) Constructor.

Method Summary

Modifier and Type	Method and Description
void	clear() Clear the storage (resetting it to the default value).
void	delete(DBIDRef id) Delete the contents for a particular ID and notifies the registered listeners.
void	destroy() Deallocate the storage, freeing the memory and notifies the registered listeners.
T	get(DBIDRef id) Retrieves an object from the storage.
T	put(DBIDRef id, T value) Associates the specified value with the specified id in this storage.

Methods inherited from class java.lang.Object

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

Field Detail

data

private java.lang.Object[] data

Data array.

idmap

private DataStoreIDMap idmap

DBID to index map.

Constructor Detail

ArrayStore

public ArrayStore(java.lang.Object[] data,
                  DataStoreIDMap idmap)

Constructor.

Parameters:

data - Data array

idmap - DBID to offset mapping

Method Detail

get

public T get(DBIDRef id)

Description copied from interface: DataStore

Retrieves an object from the storage.

Specified by:

get in interface DataStore<T>

Parameters:

id - Database ID.

Returns:

Object or null

put

public T put(DBIDRef id,
             T value)

Description copied from interface: WritableDataStore

Associates the specified value with the specified id in this storage. If the storage previously contained a value for the id, the previous value is replaced by the specified value.

Specified by:

put in interface WritableDataStore<T>

Parameters:

id - Database ID.

value - Value to store.

Returns:

previous value

destroy

public void destroy()

Description copied from interface: WritableDataStore

Deallocate the storage, freeing the memory and notifies the registered listeners.

Specified by:

destroy in interface WritableDataStore<T>

delete

public void delete(DBIDRef id)

Description copied from interface: WritableDataStore

Delete the contents for a particular ID and notifies the registered listeners.

Specified by:

delete in interface WritableDataStore<T>

Parameters:

id - Database ID.

clear

public void clear()

Description copied from interface: WritableDataStore

Clear the storage (resetting it to the default value).

Specified by:

clear in interface WritableDataStore<T>