de.lmu.ifi.dbs.elki.database.connection
Class EmptyDatabaseConnection<O extends DatabaseObject>

java.lang.Object
  de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      de.lmu.ifi.dbs.elki.database.connection.AbstractDatabaseConnection<O>
          de.lmu.ifi.dbs.elki.database.connection.EmptyDatabaseConnection<O>

Type Parameters:

O - Object type

All Implemented Interfaces:

DatabaseConnection<O>, Parameterizable

@Title(value="Empty Database")
@Description(value="Dummy database implementation that cannot not contain any objects.")
public class EmptyDatabaseConnection<O extends DatabaseObject>
extends AbstractDatabaseConnection<O>
implements Parameterizable

Pseudo database that is empty. Ugly hack.

Author:

Erich Schubert

Field Summary

Fields inherited from class de.lmu.ifi.dbs.elki.database.connection.AbstractDatabaseConnection

CLASS_LABEL_CLASS_ID, CLASS_LABEL_INDEX_ID, classLabelIndex, database, DATABASE_ID, EXTERNAL_ID_INDEX_ID, LABEL_CONCATENATION

Fields inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debug, logger

Constructor Summary

EmptyDatabaseConnection(Parameterization config)
Constructor.

Method Summary

Database<O>

getDatabase(Normalization<O> normalization) Returns a Database according to parameter settings.

Methods inherited from class de.lmu.ifi.dbs.elki.database.connection.AbstractDatabaseConnection

normalizeAndTransformLabels

Methods inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debugFine, debugFiner, debugFinest, exception, progress, verbose, warning

Methods inherited from class java.lang.Object

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

Constructor Detail

EmptyDatabaseConnection

public EmptyDatabaseConnection(Parameterization config)

Constructor.

Parameters:

config - Configuration

Method Detail

getDatabase

public Database<O> getDatabase(Normalization<O> normalization)

Description copied from interface: DatabaseConnection

Returns a Database according to parameter settings.

Specified by:

getDatabase in interface DatabaseConnection<O extends DatabaseObject>

Parameters:

normalization - ignored for an empty database.

Returns:

a Database according to parameter settings