HL7: A Package of Decorators

"Implementation of org.hl7.rim.Role as an abstract decorator, i.e., a class that returns NULL/NA or nothing for all property accessprs (sic) amd (sic [indeed many times sic]) that raises UnsupportedOperationExceptions for all mutators. This is used to adapt custom application classes to the RIM class interfaces and only bother about mapping those properties that actually apply to the application class. This can be done in one of two ways: (1) the client class can extend the decorator directly, and implement the applicable properties, or (2) the abstract decorator can be extend (sic) to a concrete decorator, which would hold a reference to the client object and method bodies to delegate and adapt the applicable properties."

Update: July 9, 2009
The quoted package, now here, was originally posted here, where it remained for almost two years before being taken down in 2009. The misprints which it contains (including misspellings of 'and') are of interest only because they are repeated over 6o times in a single document, suggesting that the document itself was never (proof)read by any human being.