DDS — Naming_of_attribute_getter_operations

Naming_of_attribute_getter_operations

DataWriter class table, and DataReader class table operations
get_liveliness_lost_status, get_offered_deadline_missed_status and
get_offered_incompatible_qos_status.

In the IDL file, these getter methods are specified as readonly
attributes with the same names, but without the preceeding
"get_". This leads to getter methods with different names in different
languages (In C++ the"get_" part will disappear, in Java only the "_"
will disappear).

These IDL-to-language mappings would invalidate the PIM. To avoid
this kinds of issues we should avoid using attributes in either the
PIM or the PSM. The use of explicit operations will make the PIM more
easily mappede to different PSMs.

**PROPOSAL**

Replace the readonly attributes in the PIM or PSM with explicit
get_xxx operations. Replace any read-write attributes attributes in
the PIM or PSM with explicit get_xxx and set_xxx operations.

see below