Package elki.database.datastore.memory

Class MapIntegerDBIDRecordStore

java.lang.Object

elki.database.datastore.memory.MapIntegerDBIDRecordStore

All Implemented Interfaces:

RecordStore, WritableRecordStore

public class MapIntegerDBIDRecordStore
extends java.lang.Object
implements WritableRecordStore

A class to answer representation queries using a map and an index within the record.

Since:

0.4.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

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

Field Summary

Fields

Modifier and Type	Field	Description
private it.unimi.dsi.fastutil.ints.Int2ObjectMap<java.lang.Object[]>	data	Storage Map.
private int	rlen	Record length.

Constructor Summary

Constructors

Constructor	Description
MapIntegerDBIDRecordStore(int rlen)	Constructor without existing data.
MapIntegerDBIDRecordStore(int size, int rlen)	Constructor without existing data.
MapIntegerDBIDRecordStore(int rlen, it.unimi.dsi.fastutil.ints.Int2ObjectMap<java.lang.Object[]> data)	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

rlen

private final int rlen

Record length.

data

private final it.unimi.dsi.fastutil.ints.Int2ObjectMap<java.lang.Object[]> data

Storage Map.

Constructor Detail

MapIntegerDBIDRecordStore

public MapIntegerDBIDRecordStore(int rlen,
                                 it.unimi.dsi.fastutil.ints.Int2ObjectMap<java.lang.Object[]> data)

Constructor with existing data.

Parameters:

rlen - Number of columns (record length)

data - Existing data map

MapIntegerDBIDRecordStore

public MapIntegerDBIDRecordStore(int rlen)

Constructor without existing data.

Parameters:

rlen - Number of columns (record length)

MapIntegerDBIDRecordStore

public MapIntegerDBIDRecordStore(int size,
                                 int rlen)

Constructor without existing data.

Parameters:

size - Expected size

rlen - Number of columns (record length)

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.

Type Parameters:

T - type

Parameters:

id - Database ID

index - column index

Returns:

current value

set

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

Actual setter.

Type Parameters:

T - type

Parameters:

id - Database ID

index - column index

value - new value

Returns:

previous 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