CORBA24 — CCM Issue: How are standard EJB exceptions mapped into the CCM View

Chapter 8 of the spec specifies mappings between EJB operations and their
equivalents in the CCM view, but it leaves the mappings of standard EJB
exceptions unclear.

Issue:
Create methods on an EJB home interface all throw the standard
javax.ejb.CreateException; finder methods on the EJB home interface all
throw the javax.ejb.FinderException; and remove methods on both home and
remote interfaces all throw the javax.ejb.RemoveException. In a few cases
chapter 8 gives an implied mapping: for example, the FinderException on the
findByPrimaryKey method seems to map to either the
Components.UnknownKeyValue exception or to the Components.InvalidKey
exception on the equivalent find_by_primary_key CCM method. Even in these
cases the names are sometimes inappropriate. In the majority of cases,
however, there is simply no CCM equivalent to the EJB exception, and bridge
implementors are left to wonder whether they should attempt a non-standard
mapping.

Proposal:
(a) Add the new CCM standard exceptions Components.CreationFailure,
Components.NotFound, and Components.RemovalFailure
(b) Add Components.CreationFailure to the raises clause of all create
methods on implicit and explicit home interfaces
(c) Add Components.NotFound to the raises clause of
find_by_primary_key on implicit home interfaces, and to the raises clause
of all finder methods on explicit home interfaces
(d) Add Components.RemovalFailure to the raises clause on the remove
operation on implicit home interfaces, to the CCMObject.remove operation,
and to the CCMHome.remove_component operation
(e) Specify in chapter 8 that the EJB Finder exception is always
mapped to Components.CreationFailure; that the EJB CreateException is
always mapped to Components.CreationFailure; and that the EJB
RemoveException is always mapped to Components.RemovalFailure.
(f) Make explicit in chapter 8 the already implied mapping bewteen the
EJB DuplicateKeyException and the Components.DuplicateKeyValue exception

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