[ebxml-cppa] "IMPLIED" keyword

[Martin W Sachs <mwsachs@us.ibm.com>]

We may have a problem with the use of the IMPLIED keyword to describe
attribute values in the text.  I ran into a specific case (below) which
makes me wonder whether it is correct to talk about IMPLIED for attributes
when the validating document is a schema rather than a DTD. Is there any
way of expressing the equivalent of IMPLIED in a schema?

The specific case is the invocationLimit and concurrentConversations
attributes of the ConversationConstraints element of the CPA.  The text in
section 9.5 is "an IMPLIED invocationLimit attribute" and "an IMPLIED
conversationConstraints attribute".

The CPPA Schema states:
      <attribute name="invocationLimit" type="int"/>
      <attribute name="concurrentConversations" type="int"/>

Since both minOccurs and maxOccurs default to the value "1", it seems to me
that these attributes are both REQUIRED, with no default stated.

If I am right, someone should go through the text, check for any attributes
described as IMPLIED, and correct the text to conform to the Schema.

Regards,
Marty



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Martin W. Sachs
IBM T. J. Watson Research Center
P. O. B. 704
Yorktown Hts, NY 10598
914-784-7287;  IBM tie line 863-7287
Notes address:  Martin W Sachs/Watson/IBM
Internet address:  mwsachs @ us.ibm.com
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