#22 Support deserialization of enumerated values

[Eric Jain]

Consider the following example:

<status xsi:type="ns:Status">completed</status>

A look into the WSDL would show that 'Status' is an
enumeration of xsd:string (or some other simple type)
values.

<simpleType name="Status">
<restriction base="xsd:string">
<enumeration value="running" />
<enumeration value="completed" />
<enumeration value="failed" />
</restriction>
</simpleType>

Looking this up may be overkill, but instead of failing
because the type 'Status' is not known, the type could
simply be treated as a simple type! So instead of:

$res = $class ?
die "Unrecognized type '$type'\n" :
$value
unless defined $res;

one could do:

$res = $value ?
$value :
die "Unrecognized type '$type'\n"
unless defined $res;

or perhaps even:

$res = $value ?
bless(\$value, $class) :
die "Unrecognized type '$type'\n"
unless defined $res;

Note that using restrictions on simple types to express
enumerations is supported out-of-the-box automatically
by other toolkits such as Axis, Glue, and even the JAXB
specification.