com.sun.xacml.combine
Class BaseCombiningAlgFactory

java.lang.Object
  com.sun.xacml.combine.CombiningAlgFactory
      com.sun.xacml.combine.BaseCombiningAlgFactory

Direct Known Subclasses:

StandardCombiningAlgFactory

public class BaseCombiningAlgFactory

extends CombiningAlgFactory

This is a basic implementation of CombiningAlgFactory. It implements the insertion and retrieval methods, but doesn't actually setup the factory with any algorithms.

Note that while this class is thread-safe on all creation methods, it is not safe to add support for a new algorithm while creating an instance of an algorithm. This follows from the assumption that most people will initialize these factories up-front, and then start processing without ever modifying the factories. If you need these mutual operations to be thread-safe, then you should write a wrapper class that implements the right synchronization.

Since:

1.2

Constructor Summary

BaseCombiningAlgFactory()
Default constructor.

BaseCombiningAlgFactory(Set algorithms)
Constructor that configures this factory with an initial set of supported algorithms.

Method Summary

void	addAlgorithm(CombiningAlgorithm alg) Adds a combining algorithm to the factory.
CombiningAlgorithm	createAlgorithm(URI algId) Tries to return the correct combinging algorithm based on the given algorithm ID.
Set	getSupportedAlgorithms() Returns the algorithm identifiers supported by this factory.

Methods inherited from class com.sun.xacml.combine.CombiningAlgFactory

addCombiningAlg, createCombiningAlg, getInstance, setDefaultFactory

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseCombiningAlgFactory

public BaseCombiningAlgFactory()

Default constructor.

BaseCombiningAlgFactory

public BaseCombiningAlgFactory(Set algorithms)

Constructor that configures this factory with an initial set of supported algorithms.

Parameters:

algorithms - a Set of CombiningAlgorithms

Throws:

IllegalArgumentException - if any elements of the set are not CombiningAlgorithms

Method Detail

addAlgorithm

public void addAlgorithm(CombiningAlgorithm alg)

Adds a combining algorithm to the factory. This single instance will be returned to anyone who asks the factory for an algorithm with the id given here.

Specified by:

addAlgorithm in class CombiningAlgFactory

Parameters:

alg - the combining algorithm to add

Throws:

IllegalArgumentException - if the algId is already registered

getSupportedAlgorithms

public Set getSupportedAlgorithms()

Returns the algorithm identifiers supported by this factory.

Specified by:

getSupportedAlgorithms in class CombiningAlgFactory

Returns:

a Set of Strings

createAlgorithm

public CombiningAlgorithm createAlgorithm(URI algId)
                                   throws UnknownIdentifierException

Tries to return the correct combinging algorithm based on the given algorithm ID.

Specified by:

createAlgorithm in class CombiningAlgFactory

Parameters:

algId - the identifier by which the algorithm is known

Returns:

a combining algorithm

Throws:

UnknownIdentifierException - algId is unknown