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

General data store layer API (along the lines of Map<DBID, T> - use everywhere!)

See:
Description

Interface Summary

DataStore<T>	Generic storage interface for objects indexed by DBID.
DataStoreFactory	API for a storage factory used for producing larger storage maps.
DataStoreIDMap	Interface to map DBIDs to integer record ids for use in storage.
DataStoreListener	Defines the interface for an object that listens to changes in a DataStore.
RecordStore	Represents a storage which stores multiple values per object in a record fashion.
WritableDataStore<T>	Writable data store.
WritableRecordStore	Represents a storage which stores multiple values per object in a record fashion.

Class Summary

DataStoreEvent	Encapsulates information describing changes, i.e. updates, insertions, and / or deletions in a DataStore, and used to notify all subscribed DataStoreListener of the change.
DataStoreUtil	Storage utility class.
RangeIDMap	Mapping a static DBID range to storage IDs.

Enum Summary

DataStoreEvent.Type

Available event types.

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

General data store layer API (along the lines of Map<DBID, T> - use everywhere!) for ELKI.

When to use:

Every time you need to associate a larger number of objects (in form of DBIDs) with any kind of value. This can be temporary values such as KNN lists, but also result values such as outlier scores.

Basically, DataStore<T> == Map<DBID, T>. But this API will allow extensions that can do on-disk maps.

How to use:

// Storage for the outlier score of each ID. 
 final WritableDataStore<Double> scores = DataStoreFactory.FACTORY.makeStorage(ids, DataStoreFactory.HINT_STATIC, Double.class);