Method Details

• register

  public void register(String clientSignalId, Signal<?> signal)

  Registers a signal instance and creates an association between the provided clientSignalId and signal.

  If the signal is already registered, signal instance registration is skipped. if the mapping between the provided clientSignalId and signal is already registered, the mapping is skipped, too.

  Parameters:

  clientSignalId - the client signal id, must not be null

  signal - the signal instance, must not be null

  Throws:

  NullPointerException - if clientSignalId or signal is null

• get

  public Signal<?> get(String clientSignalId)

  Get a signal instance by the provided clientSignalId.

  Parameters:

  clientSignalId - the client signal id, must not be null

  Returns:

  the signal instance, or null if no signal is found for the provided clientSignalId

  Throws:

  NullPointerException - if clientSignalId is null

• getBySignalId

  public Signal<?> getBySignalId(UUID signalId)

  Get a signal instance by the provided signalId.

  Parameters:

  signalId - the signal id, must not be null

  Returns:

  the signal instance, or null if no signal is found for the provided signalId

  Throws:

  NullPointerException - if signalId is null

• contains

  public boolean contains(String clientSignalId)

  Checks if a mapping exists between a registered signal instance and the provided clientSignalId.

  Parameters:

  clientSignalId - the client signal id, must not be null

  Returns:

  true if the signal instance is registered, false otherwise

  Throws:

  NullPointerException - if signalId is null

• unregister

  public void unregister(UUID signalId)

  Removes a signal instance by the provided signalId.

  It also removes all the possible associated client signals, too.

  Parameters:

  signalId - the signal id, must not be null

  Throws:

  NullPointerException - if signalId is null

• removeClientSignalToSignalMapping

  public void removeClientSignalToSignalMapping(String clientSignalId)

  Removes only the mapping between a signal instance and the provided clientSignalId.

  Parameters:

  clientSignalId - the client signal id, must not be null

  Throws:

  NullPointerException - if clientSignalId is null

• isEmpty

  public boolean isEmpty()

  Checks if the registry is empty.

  Returns:

  true if the registry is empty, false otherwise

• size

  public int size()

  Returns the number of registered signal instances.

  Returns:

  the number of registered signal instances

• getAllClientSubscriptionsSize

  public int getAllClientSubscriptionsSize()

  Returns the number of registered unique mappings between client signal ids and the signal instances.

  Returns:

  the number of registered client signals

• getAllClientSignalIdsFor

  public Set<String> getAllClientSignalIdsFor(UUID signalId)

  Returns the Set of registered client signal ids for the provided signalId.

  Parameters:

  signalId - the signal id, must not be null

  Returns:

  the Set of registered client signal ids

  Throws:

  NullPointerException - if signalId is null