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Subject: Re: [wsrp-interop] Interpretation of minOccur=0 and nillable=tuein the envelope.
hard to see in plain text emails ;-)
Mit freundlichen Gruessen / best regards,
Richard Jacob
______________________________________________________
IBM Lab Boeblingen, Germany
Dept.8288, WebSphere Portal Server Development
WSRP Standardization Technical Lead
Phone: ++49 7031 16-3469 - Fax: ++49 7031 16-4888
Email: mailto:richard.jacob@de.ibm.com
Sharmila Jayaram
<sharmila.jayaram
@oracle.com> To
Richard Jacob/Germany/IBM@IBMDE
06/01/2004 01:16 cc
PM "Klein, Avi" <avi.klein@sap.com>,
wsrp-interop@lists.oasis-open.org
Subject
Re: [wsrp-interop] Interpretation
of minOccur=0 and nillable=tue in
the envelope.
Hi,
My comments in red :-
Thanks,
Sharmila
Richard Jacob wrote:
Hi Avi,
"Klein, Avi" <avi.klein@sap.com> wrote on 05/30/2004 08:45:02 AM:
Hi all,
This is an old issue we once had an E-mail thread on and is
still
unresolved for the SAP Consumer.
We had this discussion about minOccurs="0" and nillable="true" some
time
ago and found that none of the stacks dealt with these attributes
100%
correctly. However the problems which came up here were mostly
combinations
of these two on one element.
In general the various stack have differnet schema validation levels,
some
complain some not.
I would appreciate your input on how do you interpret the
following case:
In the WSDL, the specific data type contains an element which
is
“minOccur=0” and in runtime this element is in fact null. How
should
it be presented in the envelope:
a. <elementname xsi:nill=true/>
b. <elementname/>
c. omitted al together
a. is not valid as long as nillable="true" is not set in the schema.
b. is valid, however the mapping of e.g. xml to java prevents this.
For
example <element> could be a string. <element/> should be mapped to
an
empty string (which is different from a String=null.
c. is valid and has the correct mapping
In the WSDL, the specific data type contains an element which
is
“nillable="true" and in runtime this element is in fact null.
How
should it be presented in the envelope:
a. <elementname xsi:nill=true/>
b. <elementname/>
c. omitted al together
a. is valid and the correct mapping
b. is valid, because the minOccurs/maxOccurs rules apply (both
default to
1), however the same mapping rules apply here as above.
c. is not valid if minOccurs="0" is not set.
I experience different behavior from the IBM producer and the
Oracle
producer for these cases: for example IBM producer permits xsi:
nill=true for registration context in getMarkup while Oracle
don’t.
Did you really cross-check it? Is there a serialization fault or does
Oracle simply not allow a non-registered Consumer?
I assume Oracle has registrationRequired set to true, which means you
must
register first, and I could easily imagine in that case that
a getMarkup() with a nill registrationContext is rejected.
Mike, can you cross check?
The Oracle producer sets requiresRegistration to true and hence requires a registration context
for all operations taking this parameter other than getServiceDescription(). Hence getMarkup()
will not allow a non-registered consumer.
And Oracle allows omitting minOccur=0 elements while IBM don’t.
This statement makes me really nervous :-)
I would really be surprised if you experienced validation errors.
I think we have a lot of cases where minOccurs="0" elements are
ommitted by
other consumers.
Can you please provide a message trace of a case where an element is
minOccurs="0", you ommit it on the message and we fail because of
validation?
In the message below the Oracle consumer fails validation (correctly)
because the request message indeed is invalid.
In MarkupParams the <locales> and <mimeTypes> elements are namespaced
by
"http://www.w3.org/2001/XMLSchema".
However they must be namespaced by "http://www.w3.org/2001/XMLSchema"
.
For the following request to Oracle producer:
<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:wn3="http://www.w3.org/1999/XMLSchema" xmlns:wn2="
http://www.
w3.org/2000/10/XMLSchema" xmlns:wn1="
http://www.w3.org/2001/XMLSchema"
xmlns:wn0="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance"
xmlns:wn4="urn:oasis:
names:tc:wsrp:v1:wsdl"
xmlns:tns="urn:oasis:names:tc:wsrp:v1:wsdl">
<SOAP-ENV:Body>
<prt0:getMarkup xmlns:prt0=C>
<prt0:registrationContext>
<prt0:registrationHandle>C:148.87.122.
191:4c7e10:f942d6eb23:-1f4</prt0:registrationHandle>
</prt0:registrationContext>
<prt0:portletContext>
<prt0:portletHandle>E:1:default</prt0:portletHandle
</prt0:portletContext>
<prt0:runtimeContext>
<prt0:userAuthentication>wsrp:none</prt0:
userAuthentication>
<prt0:portletInstanceKey/>
</prt0:runtimeContext>
<prt0:userContext>
<prt0:userContextKey>USER.
PRIVATE_DATASOURCE.un:testadmin</prt0:userContextKey>
</prt0:userContext>
<prt0:markupParams>
<prt0:secureClientCommunication>false</
prt0:secureClientCommunication>
<wn1:locales>en-US</wn1:locales>
<wn1:mimeTypes>text/html</wn1:mimeTypes>
<prt0:mode>wsrp:view</prt0:mode>
<prt0:windowState>wsrp:normal</prt0:windowState>
<prt0:navigationalState/>
</prt0:markupParams>
</prt0:getMarkup>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
I get:
<env:Envelope xmlns:env="
http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd
="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.
org/2001/XMLSchema-instance" xmlns:enc="http://schemas.xmlsoap.
org/soap/encoding/"
xmlns:ns0="urn:oasis:names:tc:wsrp:v1:types"
env:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<env:Body>
<env:Fault>
<faultcode>env:Server</faultcode>
<faultstring>Internal Server Error
(deserialization error: deserialization error: expected element
is
missing: {http://www.w3.org/2001/XMLSchema
}locales)</faultstring>
</env:Fault>
</env:Body>
</env:Envelope>
I’ll appreciate any lead on what does your producer expect to
receive as a valid request (a sample of a received valid
request
envelope etc.).
Hope this helps.
Richard
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