Proposal for minOccurs and maxOccurs attributes to Attachment

[YANO Keisuke (矢野啓介 ) <yano@jp.fujitsu.com>]

ebBP TC members,

I would like to propose to add the minOccurs and maxOccurs attributes
to the Attachment element of BPSS.  An example is following:

    <Attachment name="SpecificationAttachment" 
        businessDocument="BD:SpecAttachment" businessDocumentIDRef="att"
        mimeType="application/pdf"
        minOccurs="0" maxOccurs="5"/>  <!-- here -->

These attributes are similar to the same name attributes of the
Constituent element of ebXML CPPA.  The XML schema fragment for these
attributes in the Attachment element definition may be following.

    <xsd:attribute name="minOccurs" type="xsd:nonNegativeInteger"/>
    <xsd:attribute name="maxOccurs" type="xsd:nonNegativeInteger"/>

This proposal is based on the requirement of the ECALGA business
process specifications developed by JEITA [1].  They need to specify
that an attachment is optional (i.e., minOccurs="0" and
maxOccurs="1").  Also, it is likely that they will want to specify
that the number of attachments is arbitrary in the future.

FYI, ECALGA is a B2B electronic commerce specification that adopts
BPSS, CPA, and ebMS for electronics and IT industries.  You might be
insterested in my article [2] on JEITA's interoperability test using
ebXML.

[1] Japan Electronics and Information Technology Industries Association,
    http://ec.jeita.or.jp/
[2] Original Japanese version: 
     http://xml.fujitsu.com/jp/column/frontline/ebxml_2.html
    English translation:
     http://www.fujitsu.com/services/solutions/xml/frontline/XML_ebxml2.html

Regards,

Yano Keisuke