Package elki.database

Class AbstractDatabase

java.lang.Object

elki.database.AbstractDatabase

All Implemented Interfaces:

elki.database.Database

Direct Known Subclasses:

HashmapDatabase, ProxyDatabase, StaticArrayDatabase

public abstract class AbstractDatabase
extends java.lang.Object
implements elki.database.Database

Abstract base class for database API implementations. Provides default management of relations, indexes and events as well as default query matching.

Note: when debugging index usage, set logging for this package to FINEST via -enableDebug elki.database=FINEST

Since:

0.1

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AbstractDatabase.Par	Parameterization class.

Field Summary

Fields

Modifier and Type	Field	Description
protected DatabaseEventManager	eventManager	The event manager, collects events and fires them on demand.
protected java.util.Collection<elki.index.IndexFactory<?>>	indexFactories	Index factories.
protected java.util.List<elki.database.relation.Relation<?>>	relations	The relations we manage.

Constructor Summary

Constructors

Constructor	Description
AbstractDatabase()	Constructor.

Method Summary

Modifier and Type	Method	Description
void	accumulateDataStoreEvents()
void	addDataStoreListener(elki.database.datastore.DataStoreListener l)
void	flushDataStoreEvents()
elki.datasource.bundle.SingleObjectBundle	getBundle(elki.database.ids.DBIDRef id)
protected abstract elki.logging.Logging	getLogger()	Get the class logger.
java.lang.String	getLongName()
<O> elki.database.relation.Relation<O>	getRelation(elki.data.type.TypeInformation restriction, java.lang.Object... hints)
java.util.Collection<elki.database.relation.Relation<?>>	getRelations()
java.lang.String	getShortName()
void	removeDataStoreListener(elki.database.datastore.DataStoreListener l)

Methods inherited from class java.lang.Object

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

Methods inherited from interface elki.database.Database

initialize

Field Detail

eventManager

protected final DatabaseEventManager eventManager

The event manager, collects events and fires them on demand.

relations

protected final java.util.List<elki.database.relation.Relation<?>> relations

The relations we manage.

indexFactories

protected final java.util.Collection<elki.index.IndexFactory<?>> indexFactories

Index factories.

Constructor Detail

AbstractDatabase

public AbstractDatabase()

Constructor.

Method Detail

getBundle

public elki.datasource.bundle.SingleObjectBundle getBundle(elki.database.ids.DBIDRef id)

Specified by:

getBundle in interface elki.database.Database

getRelations

public java.util.Collection<elki.database.relation.Relation<?>> getRelations()

Specified by:

getRelations in interface elki.database.Database

getRelation

public <O> elki.database.relation.Relation<O> getRelation(elki.data.type.TypeInformation restriction,
                                                          java.lang.Object... hints)
                                                   throws elki.data.type.NoSupportedDataTypeException

Specified by:

getRelation in interface elki.database.Database

Throws:

elki.data.type.NoSupportedDataTypeException

addDataStoreListener

public void addDataStoreListener(elki.database.datastore.DataStoreListener l)

Specified by:

addDataStoreListener in interface elki.database.Database

removeDataStoreListener

public void removeDataStoreListener(elki.database.datastore.DataStoreListener l)

Specified by:

removeDataStoreListener in interface elki.database.Database

accumulateDataStoreEvents

public void accumulateDataStoreEvents()

Specified by:

accumulateDataStoreEvents in interface elki.database.Database

flushDataStoreEvents

public void flushDataStoreEvents()

Specified by:

flushDataStoreEvents in interface elki.database.Database

getLongName

public java.lang.String getLongName()

getShortName

public java.lang.String getShortName()

getLogger

protected abstract elki.logging.Logging getLogger()

Get the class logger.

Returns:

Class logger