de.lmu.ifi.dbs.elki.database
Class Associations

java.lang.Object
  de.lmu.ifi.dbs.elki.database.Associations

public class Associations
extends Object

A helper class to facilitate setting of global associations in a database.

Author:

Arthur Zimek

Field Summary

private AnyMap<AssociationID<?>>

associations Map to store the actual data.

Constructor Summary

Associations()
Provides an Associations object ready to set and get Objects for association.

Method Summary

<T> T	get(AssociationID<T> associationID) Retrieves the object associated under the given association id.
Set<AssociationID<?>>	keySet() Provides the set of all association ids pointing to objects within this Associations.
<T> void	put(AssociationID<T> associationID, T associationObject) Sets the specified object under the given AssociationID.
void	putAll(Associations associations) Adds all pairs of association ids and objects currently set in the given Associations object to this Associations object.
void	putUnchecked(AssociationID<?> associationID, Object associationObject) Sets the specified object under the given AssociationID.

Methods inherited from class java.lang.Object

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

Field Detail

associations

private AnyMap<AssociationID<?>> associations

Map to store the actual data.

Constructor Detail

Associations

public Associations()

Provides an Associations object ready to set and get Objects for association.

Method Detail

put

public <T> void put(AssociationID<T> associationID,
                    T associationObject)

Sets the specified object under the given AssociationID.

Type Parameters:

T - the type of the object to be associated and the AssociationID

Parameters:

associationID - the AssociationID to point to the object

associationObject - the object to be associated

putUnchecked

public void putUnchecked(AssociationID<?> associationID,
                         Object associationObject)

Sets the specified object under the given AssociationID. Untyped version.

Parameters:

associationID - the AssociationID to point to the object

associationObject - the object to be associated

get

public <T> T get(AssociationID<T> associationID)

Retrieves the object associated under the given association id.

Type Parameters:

T - the type of the object to retrieve conforms to the type of the association id

Parameters:

associationID - the association id pointing to the object to retrieve

Returns:

the object associated under the given association id

keySet

public Set<AssociationID<?>> keySet()

Provides the set of all association ids pointing to objects within this Associations.

Returns:

the set of all association ids pointing to objects within this Associations

putAll

public void putAll(Associations associations)

Adds all pairs of association ids and objects currently set in the given Associations object to this Associations object.

Parameters:

associations - an Associations object to copy the contained associations from