I2JAV12 — attribute exceptions

The CCM (ptc/01-11-03) has added exceptions to attributes.
The IDL to Java mapping needs to be updated to reflect this addition.
Also, the mapping currently says essentially nothing about the mapping of
exceptions
on operations or attributes in any context.

Proposed revised text:

In section 1.13.2, replace the paragraph

The mapped Java class contains abstract method definitions that correspond
to the operations and attributes defined on the value type in IDL.

with

The mapped Java class contains abstract method definitions that correspond
to the operations and attributes defined on the value type in IDL.
Attributes
are mapped in the same way as in interfaces, to modifer and accessor
methods.
Exceptions are mapped as follows:

1. If an operation raises exceptions, then the corresponding Java method
must throw
Java exceptions corresponding to the listed IDL exceptions.

2. If a readonly attribute raises exceptions, then the Java read accessor
method must throw
Java exceptions corresponding to the listed IDL exceptions.

3. If an attribute has a getRaises clause, the the Java accessor method must
throw Java exceptions corresponding to the listed IDL exceptions.

4. If an attribute has a setRaises clause, the the Java modifier method must
throw Java exceptions corresponding to the listed IDL exceptions.

In section 1.12.1, replace the third paragraph with the following two
paragraphs:

The Java operations interface contains the mapped operation signatures.
If an operation raises exceptions, then the corresponding Java method must
throw
Java exceptions corresponding to the listed IDL exceptions.

The Java signature interface extends the operations interface, the (mapped)
base org.omg.CORBA.Object, as well as org.omg.portable.IDLEntity.
Methods can be invoked on the signature interface. Interface inheritance
expressed in IDL is reflected in both the Java signature interface and
operations interface hierarchies.

In section 1.12.1, insert after the sixth paragraph:

Attribute exceptions are mapped as follows:

1. If a readonly attribute raises exceptions, then the Java read accessor
method must
throw Java exceptions corresponding to the listed IDL exceptions.

2. If an attribute has a getRaises clause, the the Java accessor method must
throw Java exceptions corresponding to the IDL exceptions listed in the
getRaises clause.

3. If an attribute has a setRaises clause, the the Java modifier method must
throw Java exceptions corresponding to the IDL exceptions listed in the
setRaises clause.

Incoporate the revised text and close the issue