Constructor Detail

• DefaultServiceSelector

  public DefaultServiceSelector()

  Create a DefaultServiceSelector with a default empty role.

• DefaultServiceSelector

  public DefaultServiceSelector(java.lang.String role)

  Create a DefaultServiceSelector with a role for debug purposes.

  Parameters:

  role - The role for this selector.

  Throws:

  java.lang.NullPointerException - if the role is null.

Method Detail

• select

  public java.lang.Object select(java.lang.Object hint)
                          throws ServiceException

  Select the desired object.

  Specified by:

  select in interface ServiceSelector

  Parameters:

  hint - the hint to retrieve Object

  Returns:

  the Object

  Throws:

  ServiceException - if an error occurs

• isSelectable

  public boolean isSelectable(java.lang.Object hint)

  Returns whether a Object exists or not

  Specified by:

  isSelectable in interface ServiceSelector

  Parameters:

  hint - the hint to retrieve Object

  Returns:

  true if the Object exists

• release

  public void release(java.lang.Object object)

  Release object.

  Specified by:

  release in interface ServiceSelector

  Parameters:

  object - the Object to release

• put

  public void put(java.lang.Object hint,
                  java.lang.Object object)

  Populate the ServiceSelector.

  Parameters:

  hint - the hint to be used to retrieve the Object later

  object - the Object to hold

• getObjectMap

  protected final java.util.Map getObjectMap()

  Helper method for subclasses to retrieve object map.

  Returns:

  the object map

• makeReadOnly

  public void makeReadOnly()

  Makes this service selector read-only.

• checkWriteable

  protected final void checkWriteable()
                               throws java.lang.IllegalStateException

  Checks if this service selector is writeable.

  Throws:

  java.lang.IllegalStateException - if this service selector is read-only