lifetime of a portletInstanceKey

[Subbu Allamaraju <subbu@bea.com>]

At the JSR286 EG F2F, the question of whether portletInstanceKey is 
required to be constant across the lifetime of consumer's usage is 
required to be a the same or not came up.

Our impression is that this key should be a constant, but there is no 
direct mention of this in the spec.

Should we add a statement like the following in Sec 6.1.3.

"The Consumer SHOULD supply the same value for the lifetime of its usage 
of a portlet in order to allow the producer to manage any state within 
Producer supplied mechanisms."

Similarly, for the namespacePrefix field, any reason not to make the 
following statement to use a conformance term like SHOULD?

"In order to support items that could become part of a URL activation, 
this token is required to be constant for the lifetime of the 
portletHandle and be the value used for both Consumer and Producer 
namespacing (see [Section 10.3])."

Subbu
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