[bpel-dev] Xpath or BPEL validation error?

[Bryan Morenc <bmorenc@xxxxxxxxx>]

Hi All,

I've been following the Eclipse BPEL Editor for quite some time.  Since my project is finally moving from BPEL 1.1 to 2.0 with the ODE engine I can now begin to make use of, and hopefully contribute to, this tool and community.

I followed the tutorial hosted here (Thanks babelfish): http://babelfish.yahoo.com/translate_url?doit=done&tt=url&intl=1&fr=bf-home&trurl=http%3A%2F%2Fwww.se.uni-hannover.de%2Flehre%2Ftutorials%2FBPEL-ODE-Eclipse-Getting-Started.php&lp=de_en&btnTrUrl=Translate>

Using Eclipse 3.4.2 J2EE distribution and the latest source from CVS.

The editor reports 3 errors and 1 info in the BPEL source generated by the addition of the Assign step.


        <bpel:assign validate="yes" name="Assign">
            <bpel:copy> -- Copy rule not checked - from-spec type-of "unspecified", to-spec type-of "<complexType>".
                <bpel:from>
                   
  <tns:result></tns:result>
</tns:HelloWorldResponse>
</bpel:literal>
                </bpel:from>
                <bpel:to part="payload" variable="output"></bpel:to>
            </bpel:copy>
            <bpel:copy> -- The from-spec of "<complexType>" is not compatible with to-spec of "<complexType>"
                <bpel:from part="payload" variable="input">
                    <bpel:query queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0">
                        <![CDATA[tns:input]]> -- XPath _expression_ "tns:input" in <tns:input> is not a LocationPath _expression_.
                    </bpel:query>
                </bpel:from>
                <bpel:to part="payload" variable="output">
                    <bpel:query queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0">
                        <![CDATA[tns:result]]> -- XPath _expression_ "tns:result" in <tns:result> is not a LocationPath _expression_.
                    </bpel:query>
                </bpel:to>
            </bpel:copy>
        </bpel:assign>

I am able to successfully deploy the HelloWorld process to ODE and it runs successfully without error.  So this leads me to believe there is a bug in the validation, not the code generation.  I cannot tell if the "from - to spec not compatible" error is a byproduct of the LocationPath _expression_ errors or not.  I would love to help provide a fix here to get my feet wet but I'd like a little help determining what's going on and where I might look in the code.

Thanks!
Bryan Morenc