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

Class DataStoreUtil

java.lang.Object

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

public final class DataStoreUtil
extends Object

Storage utility class. Mostly a shorthand for DataStoreFactory.FACTORY.

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DataStoreUtil.AscendingByDoubleDataStore Sort objects by a double relation
static class	DataStoreUtil.DescendingByDoubleDataStore Sort objects by a double relation

Constructor Summary

Constructors

Constructor and Description
DataStoreUtil()

Method Summary

Methods

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

Methods inherited from class java.lang.Object

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

Constructor Detail

DataStoreUtil

public DataStoreUtil()

Method Detail

makeStorage

public static <T> WritableDataStore<T> makeStorage(DBIDs ids,
                                   int hints,
                                   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

public static 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

public static 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

public static 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

public static 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

public static 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

public static WritableRecordStore makeRecordStorage(DBIDs ids,
                                    int hints,
                                    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