Package se.swedenconnect.security.algorithms

Class AlgorithmRegistrySingleton

java.lang.Object

se.swedenconnect.security.algorithms.AlgorithmRegistrySingleton

All Implemented Interfaces:

AlgorithmRegistry

public class AlgorithmRegistrySingleton
extends Object
implements AlgorithmRegistry

An singleton for easy access to the AlgorithmRegistry.

Author:

Martin Lindström (martin@idsec.se), Stefan Santesson (stefan@idsec.se)

Method Summary

Modifier and Type	Method	Description
Algorithm	getAlgorithm(String algorithmUri)	Gets the algorithm based on its URI.
<T extends Algorithm> T	getAlgorithm(String algorithmUri, Class<T> clazz)	Gets an algorithm based on its URI and type.
Algorithm	getAlgorithm(Predicate<Algorithm> predicate)	Gets the first algorithm that matches the supplied predicate.
<T extends Algorithm> T	getAlgorithm(Predicate<Algorithm> predicate, Class<T> clazz)	Gets the first algorithm that matches the given type and supplied predicate.
List<Algorithm>	getAlgorithms(Predicate<Algorithm> predicate)	Gets all algorithms that matches the supplied predicate.
<T extends Algorithm> List<T>	getAlgorithms(Predicate<Algorithm> predicate, Class<T> clazz)	Gets all algorithms that matches the given type and the supplied predicate.
static AlgorithmRegistrySingleton	getInstance()	Gets the singleton instance.
static void	setAlgorithmRegistry(AlgorithmRegistry algorithmRegistry)	Assigns the AlgorithmRegistry instance to be used by this singleton.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static AlgorithmRegistrySingleton getInstance()

Gets the singleton instance.

Returns:

the singleton instance

setAlgorithmRegistry

public static void setAlgorithmRegistry(AlgorithmRegistry algorithmRegistry)

Assigns the AlgorithmRegistry instance to be used by this singleton. If no instance is assigned, a default implementation of the registry will be used.

Parameters:

algorithmRegistry - the registry to be used by the singleton

getAlgorithm

public Algorithm getAlgorithm(String algorithmUri)

Gets the algorithm based on its URI.

Specified by:

getAlgorithm in interface AlgorithmRegistry

Parameters:

algorithmUri - the algorithm URI

Returns:

the algorithm, or null if none is found

getAlgorithm

public <T extends Algorithm> T getAlgorithm(String algorithmUri,
                                            Class<T> clazz)

Gets an algorithm based on its URI and type.

Specified by:

getAlgorithm in interface AlgorithmRegistry

Type Parameters:

T - the algorithm type

Parameters:

algorithmUri - the algorithm URI

clazz - the type representing the algorithm

Returns:

the algorithm, or null if none is found

getAlgorithm

public Algorithm getAlgorithm(Predicate<Algorithm> predicate)

Gets the first algorithm that matches the supplied predicate.

If more than one algorithm matches the supplied predicate, the one with the lowest order is returned.

Specified by:

getAlgorithm in interface AlgorithmRegistry

Parameters:

predicate - the predicate to apply

Returns:

an Algorithm or null if no algorithms in the registry matches

See Also:

AlgorithmPredicates

getAlgorithm

public <T extends Algorithm> T getAlgorithm(Predicate<Algorithm> predicate,
                                            Class<T> clazz)

Gets the first algorithm that matches the given type and supplied predicate.

If more than one algorithm matches the supplied predicate, the one with the lowest order is returned.

Specified by:

getAlgorithm in interface AlgorithmRegistry

Parameters:

predicate - the predicate to apply

clazz - the type representing the algorithm

Returns:

an Algorithm or null if no algorithms in the registry matches

See Also:

AlgorithmPredicates

getAlgorithms

public List<Algorithm> getAlgorithms(Predicate<Algorithm> predicate)

Gets all algorithms that matches the supplied predicate.

The list is sorted with the lowest algorithms with the lowest order index first.

Specified by:

getAlgorithms in interface AlgorithmRegistry

Parameters:

predicate - the predicate to apply

Returns:

a (possibly empty) list of Algorithm objects

getAlgorithms

public <T extends Algorithm> List<T> getAlgorithms(Predicate<Algorithm> predicate,
                                                   Class<T> clazz)

Gets all algorithms that matches the given type and the supplied predicate.

The list is sorted with the lowest algorithms with the lowest order index first.

Specified by:

getAlgorithms in interface AlgorithmRegistry

Parameters:

predicate - the predicate to apply

clazz - the type representing the algorithm

Returns:

a (possibly empty) list of Algorithm objects