CORBA35 — 69.8.2.8 The simple Element, page 69-538

2. 69.8.2.8 The simple Element, page 69-538
Simple Extensions and Changes
a) Enumerations - Add an optional enumerations element to the simple
definition.
This allows a simple enumeration property to be defined. Each enumeration
label
has an associated value. The values are all of the same simple type.

Change simple element to:

<!ELEMENT simple
( description?
, value
, choices?
, enumerations?
, defaultvalue?
) >

Define new enumerations element

<!ELEMENT enumerations
( enumeration+
)>
<!ELEMENT enumeration EMPTY>
<!ATTLIST enumeration
label CDATA #REQUIRED
value CDATA #IMPLIED>

b) Short appears twice in the simple type attribute definition. Remove
second
occurrence.
<!ELEMENT simple
( description?
, value
, choices?
, defaultvalue?
) >
<!ATTLIST simple
name CDATA #IMPLIED
type ( boolean

c) Units - add an optional units element to indicate the units of
measurement for
a simple property.

<!ELEMENT simple
( description?
, value
, choices?
, units?
, defaultvalue?
) >

<!ELEMENT units (#PCDATA)>

d) Property Kind - The properties file for a component should not be
restricted to
only initial configuration properties. A component has many different types
of
properties and when defining a component one should be able to define these
types of properties in a generic way. Add a kind element or attribute for a
property definition. A component has readonly, writeonly, and readwrite
properties. Simple properties can also be used for a component factory's
create
options parameter (home) or executable parameters/arguments. Only simple
properties can be used for executable parameters.

New simplekind element

<!ELEMENT simplekind EMPTY>
<!ATTLIST simplekind
kindtype (configure_writeonly | configure_readwrite | execparam |
query_readonly | factoryparam) "configure_readwrite">

Change simple definition to:

<!ELEMENT simple
( description?
, value
, choices?
, simplekind*
, defaultvalue?
) >

The propertykind can be an optional element or attribute for the stuct and
sequence elements.

New propertykind element

<!ELEMENT propertykind EMPTY>
<!ATTLIST propertykind
kindtype (configure_writeonly | configure_readwrite |
query_readonly | factoryparam) "configure">

Change Struct and Sequence to

<!ELEMENT struct
( description?
, ( simple

<!ELEMENT sequence
( description?
, ( simple*