Package elki.database.datastore

Interface DataStoreFactory

All Known Implementing Classes:

MemoryDataStoreFactory

public interface DataStoreFactory

API for a storage factory used for producing larger storage maps. Use FACTORY for a static instance.

Since:

0.4.0

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field	Description
static DataStoreFactory	FACTORY	Static storage factory
static int	HINT_DB	Data that is the main database.
static int	HINT_HOT	"Hot" data, that will be used a lot, preferring memory storage.
static int	HINT_SORTED	Data that might require sorted access (so hashmaps are suboptimal)
static int	HINT_STATIC	"static" data, that will not change often
static int	HINT_TEMP	Storage will be used only temporary.

Method Summary

Modifier and Type	Method	Description
WritableDBIDDataStore	makeDBIDStorage(DBIDs ids, int hints)	Make a new storage, to associate the given ids with an object of class dataclass.
WritableDoubleDataStore	makeDoubleStorage(DBIDs ids, int hints)	Make a new storage, to associate the given ids with an object of class dataclass.
WritableDoubleDataStore	makeDoubleStorage(DBIDs ids, int hints, double def)	Make a new storage, to associate the given ids with an object of class dataclass.
WritableIntegerDataStore	makeIntegerStorage(DBIDs ids, int hints)	Make a new storage, to associate the given ids with an object of class dataclass.
WritableIntegerDataStore	makeIntegerStorage(DBIDs ids, int hints, int def)	Make a new storage, to associate the given ids with an object of class dataclass.
WritableRecordStore	makeRecordStorage(DBIDs ids, int hints, java.lang.Class<?>... dataclasses)	Make a new record storage, to associate the given ids with an object of class dataclass.
<T> WritableDataStore<T>	makeStorage(DBIDs ids, int hints, java.lang.Class<? super T> dataclass)	Make a new storage, to associate the given ids with an object of class dataclass.

Field Detail

FACTORY

static final DataStoreFactory FACTORY

Static storage factory

HINT_TEMP

static final int HINT_TEMP

Storage will be used only temporary.

See Also:

Constant Field Values

HINT_HOT

static final int HINT_HOT

"Hot" data, that will be used a lot, preferring memory storage.

See Also:

Constant Field Values

HINT_STATIC

static final int HINT_STATIC

"static" data, that will not change often

See Also:

Constant Field Values

HINT_SORTED

static final int HINT_SORTED

Data that might require sorted access (so hashmaps are suboptimal)

See Also:

Constant Field Values

HINT_DB

static final int HINT_DB

Data that is the main database. Includes HOT, STATIC, SORTED

See Also:

Constant Field Values

Method Detail

makeStorage

<T> WritableDataStore<T> makeStorage(DBIDs ids,
                                     int hints,
                                     java.lang.Class<? super T> dataclass)

Make a new storage, to associate the given ids with an object of class dataclass.

Type Parameters:

T - stored data type

Parameters:

ids - DBIDs to store data for

hints - Hints for the storage manager

dataclass - class to store

Returns:

new data store

makeDBIDStorage

WritableDBIDDataStore makeDBIDStorage(DBIDs ids,
                                      int hints)

Make a new storage, to associate the given ids with an object of class dataclass.

Parameters:

ids - DBIDs to store data for

hints - Hints for the storage manager

Returns:

new data store

makeDoubleStorage

WritableDoubleDataStore makeDoubleStorage(DBIDs ids,
                                          int hints)

Make a new storage, to associate the given ids with an object of class dataclass.

Parameters:

ids - DBIDs to store data for

hints - Hints for the storage manager

Returns:

new data store

makeDoubleStorage

WritableDoubleDataStore makeDoubleStorage(DBIDs ids,
                                          int hints,
                                          double def)

Make a new storage, to associate the given ids with an object of class dataclass.

Parameters:

ids - DBIDs to store data for

hints - Hints for the storage manager

def - Default value

Returns:

new data store

makeIntegerStorage

WritableIntegerDataStore makeIntegerStorage(DBIDs ids,
                                            int hints)

Make a new storage, to associate the given ids with an object of class dataclass.

Parameters:

ids - DBIDs to store data for

hints - Hints for the storage manager

Returns:

new data store

makeIntegerStorage

WritableIntegerDataStore makeIntegerStorage(DBIDs ids,
                                            int hints,
                                            int def)

Make a new storage, to associate the given ids with an object of class dataclass.

Parameters:

ids - DBIDs to store data for

hints - Hints for the storage manager

def - Default value

Returns:

new data store

makeRecordStorage

WritableRecordStore makeRecordStorage(DBIDs ids,
                                      int hints,
                                      java.lang.Class<?>... dataclasses)

Make a new record storage, to associate the given ids with an object of class dataclass.

Parameters:

ids - DBIDs to store data for

hints - Hints for the storage manager

dataclasses - classes to store

Returns:

new record store