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

Interface	Description
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.
DBIDDataStore	DBID-valued data store (avoids boxing/unboxing).
DoubleDataStore	Double-valued data store (avoids boxing/unboxing).
IntegerDataStore	Integer-valued data store (avoids boxing/unboxing).
RecordStore	Represents a storage which stores multiple values per object in a record fashion.
WritableDataStore<T>	Writable data store.
WritableDBIDDataStore	Data store specialized for doubles.
WritableDoubleDataStore	Data store specialized for doubles.
WritableIntegerDataStore	Data store specialized for doubles.
WritableRecordStore	Represents a storage which stores multiple values per object in a record fashion.

Class Summary

Class	Description
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.
DataStoreUtil.AscendingByDoubleDataStore	Sort objects by a double relation
DataStoreUtil.AscendingByDoubleDataStoreAndId	Sort objects by a double relation
DataStoreUtil.AscendingByIntegerDataStore	Sort objects by a integer relation
DataStoreUtil.DescendingByDoubleDataStore	Sort objects by a double relation
DataStoreUtil.DescendingByDoubleDataStoreAndId	Sort objects by a double relation
DataStoreUtil.DescendingByIntegerDataStore	Sort objects by a integer relation

Exception Summary

Exception	Description
ObjectNotFoundException	Exception thrown when the requested object was not found in the database.

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 WritableDoubleDataStore scores = DataStoreFactory.FACTORY.makeDoubleStorage(ids, DataStoreFactory.HINT_STATIC);