Package elki.database.datastore.memory

Class ArrayRecordStore

java.lang.Object

elki.database.datastore.memory.ArrayRecordStore

All Implemented Interfaces:

RecordStore, WritableRecordStore

public class ArrayRecordStore
extends java.lang.Object
implements WritableRecordStore

A class to answer representation queries using the stored Array.

Since:

0.4.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	ArrayRecordStore.StorageAccessor<T>	Access a single record in the given data.

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor	Description
ArrayRecordStore(java.lang.Object[][] data, DataStoreIDMap idmap)	Constructor with existing data

Method Summary

Modifier and Type	Method	Description
protected <T> T	get(DBIDRef id, int index)	Actual getter
<T> WritableDataStore<T>	getStorage(int col, java.lang.Class<? super T> datatype)	Get a WritableDataStore instance for a particular record column.
boolean	remove(DBIDRef id)	Remove an object from the store, all columns.
protected <T> T	set(DBIDRef id, int index, T value)	Actual setter

Methods inherited from class java.lang.Object

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

Field Detail

data

private final java.lang.Object[][] data

Data array

idmap

private final DataStoreIDMap idmap

DBID to index map

Constructor Detail

ArrayRecordStore

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

Constructor with existing data

Parameters:

data - Existing data

idmap - Map for array offsets

Method Detail

getStorage

public <T> WritableDataStore<T> getStorage(int col,
                                           java.lang.Class<? super T> datatype)

Description copied from interface: WritableRecordStore

Get a WritableDataStore instance for a particular record column.

Specified by:

getStorage in interface RecordStore

Specified by:

getStorage in interface WritableRecordStore

Type Parameters:

T - Data type

Parameters:

col - Column number

datatype - data class

Returns:

writable storage

get

protected <T> T get(DBIDRef id,
                    int index)

Actual getter

Parameters:

id - Database ID

index - column index

Returns:

current value

set

protected <T> T set(DBIDRef id,
                    int index,
                    T value)

Actual setter

Parameters:

id - Database ID

index - column index

value - New value

Returns:

old value

remove

public boolean remove(DBIDRef id)

Description copied from interface: WritableRecordStore

Remove an object from the store, all columns.

Specified by:

remove in interface WritableRecordStore

Parameters:

id - object ID to remove

Returns:

success code