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

java.lang.Object
  de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      de.lmu.ifi.dbs.elki.database.AbstractDatabase<O>
          de.lmu.ifi.dbs.elki.database.IndexDatabase<O>

Type Parameters:

O - the type of DatabaseObject as element of the database

All Implemented Interfaces:

Database<O>, Result, Parameterizable, Iterable<Integer>

Direct Known Subclasses:

MetricalIndexDatabase, SpatialIndexDatabase

public abstract class IndexDatabase<O extends DatabaseObject>
extends AbstractDatabase<O>

IndexDatabase is a database implementation which is supported by an index structure.

Author:

Elke Achtert

Field Summary

Fields inherited from class de.lmu.ifi.dbs.elki.database.AbstractDatabase

listenerList

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

debug, logger

Constructor Summary

IndexDatabase()

Method Summary

O	delete(Integer id) Calls the super method and afterwards deletes the specified object from the underlying index structure.
void	delete(O object) Calls the super method and afterwards deletes the specified object from the underlying index structure.
abstract Index<O>	getIndex() Returns the underlying index structure.
long	getLogicalPageAccess() Returns the logical page access of this database.
long	getPhysicalReadAccess() Returns the physical read access of this database.
long	getPhysicalWriteReadAccess() Returns the physical write access of this database.
void	resetPageAccess() Resets the page -access of this database.

Methods inherited from class de.lmu.ifi.dbs.elki.database.AbstractDatabase

addDatabaseListener, associate, associateGlobally, deleteAssociations, dimensionality, fireObjectInserted, fireObjectRemoved, fireObjectsChanged, fireObjectsInserted, fireObjectsRemoved, get, getAssociation, getAssociations, getGlobalAssociation, getIDs, getName, getObjects, getParameters, insert, insert, isSet, isSetForAllObjects, isSetGlobally, iterator, partition, partition, partition, randomSample, removeDatabaseListener, restoreID, setAssociations, setNewID, size

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

Methods inherited from interface de.lmu.ifi.dbs.elki.database.Database

bulkKNNQueryForID, kNNQueryForID, kNNQueryForObject, rangeQuery, rangeQuery, reverseKNNQuery

Constructor Detail

IndexDatabase

public IndexDatabase()

Method Detail

delete

public O delete(Integer id)

Calls the super method and afterwards deletes the specified object from the underlying index structure.

Specified by:

delete in interface Database<O extends DatabaseObject>

Overrides:

delete in class AbstractDatabase<O extends DatabaseObject>

Parameters:

id - the id of an object to be removed from the database

Returns:

the object that has been removed

delete

public void delete(O object)

Calls the super method and afterwards deletes the specified object from the underlying index structure.

Specified by:

delete in interface Database<O extends DatabaseObject>

Overrides:

delete in class AbstractDatabase<O extends DatabaseObject>

Parameters:

object - the object to be removed from database

getPhysicalReadAccess

public long getPhysicalReadAccess()

Returns the physical read access of this database.

Returns:

the physical read access of this database.

getPhysicalWriteReadAccess

public long getPhysicalWriteReadAccess()

Returns the physical write access of this database.

Returns:

the physical write access of this database.

getLogicalPageAccess

public long getLogicalPageAccess()

Returns the logical page access of this database.

Returns:

the logical page access of this database.

resetPageAccess

public void resetPageAccess()

Resets the page -access of this database.

getIndex

public abstract Index<O> getIndex()

Returns the underlying index structure.

Returns:

the underlying index structure