Mapping of Singletons

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A new-style singleton of the form

  singleton Name: XIfc;

is mapped to a public Java class with the same name. The class has a single method

  public static XIfc get( context) { ... }

The semantics of such a singleton getter method in Java are as follows:

  • The singleton getter uses getValueByName to obtain the singleton instance (within the "/singletons/" name space).
  • If no singleton instance could be obtained, the singleton getter fails by throwing a The net effect is that a singleton getter either returns the requested non-null singleton instance, or throws an exception; a singleton getter will never return a null instance.

Old-style singletons are not mapped into the Java language binding.

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