Web Service implementation and consumer in different version

Currently we have a Web Service which is written in J2EE 5 and this web service are consumed by Web Application written in 1.4
We are using SOAP for connection and JAXB API for parsing. We could like to know if there is any issue which could arise because of the difference in the version of the JDK used by the consumer?
Assuming that there is a reverse communication happening between J2EE 1.4 and J2EE 5 what are the issue which could arise?
Edited by: Sanu Sasidharan on Apr 11, 2011 5:31 AM

If understand the question correctly, the versions of Java used by the server & client are irrelevant.
A Web service can be consumed even by apps written in another language (C++, for example). The only requirement is that the client send requests to the correct address, and that requests be valid according to whatever XML schema the service uses.

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2- If it is possible, do these web services need to be deployed at the Weblogic server to enable the OWSM and OSB to work effectively ?
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Hi Lupan,
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+1- Will I be able to productively leverage all features of OSB and OWSM like creating a proxy service to add WS-* standards policies and features (WS-Security, for instance) even with these web services implemented in different stacks other than Weblogic's ?+
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Hope this helps,
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Dear all
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Web Service calls enter the application through a
singleton, which in other respects is a POJO. I'm confused about this sentence. Is the application somehow separate from the web service? Is the application acting as a service to this web service? How is the application being hosted? Does it run in a container as well?
This
class manages a number of instance variable
references to other classes responsible for
implementing each Web Service method, including data
access using Hibernate. If all the references are stateless, preferably interfaced-based, you aren't likely to have thread issues.
Since the top level
singleton class is, well, a singleton, I understand
this to mean that all of the other classes maintained
as instance variables will themselves only ever have
one object instantiated (assuming of course that no
other thread of execution instantiates them except
our singleton WS entry point). To my way of thinking
this turns the whole of the Web Service
implementation into a kind of singleton application.You keep using web service and application. Are we just talking about a web service implementation here?
This strikes me as a procedural programming idiom
that happens to be implemented using Java, since
Objects with state are not being used. You are correct, sir. If services are stateless, and they should be, then they aren't exactly rich objects with state and behavior. It's very procedural, indeed.
I have not
yet asked the question "why?" of my new colleagues
but I would like to ask you what the consequences of
this design are likely to be. Particularly
considering that this application will be expected
to handle concurrent servicing of Web Service
requests - and so be thread-safe. Can it be thread
safe? If the web service is indeed stateless, then it should be thread-safe.
Are there likely performance implications?Maybe. Best to measure if those arise to see if the web service is the cause.
Forgive my ignorance is what I describe known as a
Singleton Web Service?I don't know if it's been given a pattern name. If it's a Singleton, then that's true. If it's a service, that applies. If it's deployed on the web, I'd say the label fits.
%

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Update on 08/23/2011.
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Hello All,
I have been struggling a bit while putting a reasonable security framework on a jax-rpc style web service. I'm using JWSDP1.2 to set up the webservice. I've tried to outline my problem below. Please correct me where I'm wrong.
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Hi List,
I have several questions reqarding web services, schemas, and the use of the xsi:type
attribute in messages.
Schemas:
Q1: How complex can a web service schema be?
Q2: Is it reasonable for a schema to contain derived types by extension [1]?
Q3: Could you use the International Purchase Order Schema [2] with a web service?
xsi:type
Q1: Is it reasonable for a web service to use the xsi:type attribute in the message(s)?
If I am interpreting Section 4.1.15 of the BasicProfile-1.0a [3] correctly, this
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Q2: When is it appropriate to use the xsi:type attribute? If a schema contains
derived types by extension [1]? If a schema contains xsd:anyType?
Q3: How does using the xsi:type attribute affect interoperability?
And finally,
Q4: Are there any examples available demonstrating the use of the xsi:type attribute
in messages?
Whew !!!
TIA,
Kent
[1] http://www.w3.org/TR/xmlschema-0/#DerivExt
[2] http://www.w3.org/TR/xmlschema-0/#ipo.xsd
[3] http://www.ws-i.org/Profiles/Basic/2003-08/BasicProfile-1.0a.html

Hi Kent,
A few answers inline...
HTH,
Bruce
Kent Kvarfordt wrote:
>
Hi List,
I have several questions reqarding web services, schemas, and the use of the xsi:type
attribute in messages.
Schemas:
Q1: How complex can a web service schema be?There are limits in converting the schema between language
representations, see this section [a] in the docs on roundtripping
generated data types.
[a]
http://edocs.bea.com/wls/docs81/webserv/assemble.html#1074725
Q2: Is it reasonable for a schema to contain derived types by extension [1]?
Q3: Could you use the International Purchase Order Schema [2] with a web service?
xsi:type
Q1: Is it reasonable for a web service to use the xsi:type attribute in the message(s)?
If I am interpreting Section 4.1.15 of the BasicProfile-1.0a [3] correctly, this
appears to be appropriate in certain circumstances.I've not seen this used.
http://www.ws-i.org/Profiles/Basic/2003-08/BasicProfile-1.0a.html#refinement34259632
>
Q2: When is it appropriate to use the xsi:type attribute? If a schema contains
derived types by extension [1]? If a schema contains xsd:anyType?
Q3: How does using the xsi:type attribute affect interoperability?My thought is that since this is not commonly used, then your risk of
interop failure is high.
>
And finally,
Q4: Are there any examples available demonstrating the use of the xsi:type attribute
in messages?Sorry, I looked and could not find any examples.
>
Whew !!!
TIA,
Kent
[1] http://www.w3.org/TR/xmlschema-0/#DerivExt
[2] http://www.w3.org/TR/xmlschema-0/#ipo.xsd
[3] http://www.ws-i.org/Profiles/Basic/2003-08/BasicProfile-1.0a.html

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Here is another article on J2SE vs JEE:
http://www.velocityrevies.com/forums/t151124-what-is-j2se-vs-j2ee.html
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Disclaimer:
http://myweb.accessus.net/~090/univdisc.html

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Web Service implementation and consumer in different version

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