Problems with Virtual Interfaces (providing web services)

[Former Member]

Hi all,

I faced a problem with providing a web service that accepts data as discribed in a schema file (xsd).

I first analysed the schema and created the data classes according to it, as closest, as I could.

How can I realize such a ComplexType as class (MyCars.java):

<xs:schema xmlns:cars="Cars" targetNamespace="Cars">
  <xs:element name="MyCars">
    <xs:complexType>
      <xs:sequence>
        <xs:choice maxOccurs="unbounded">
          <xs:element ref="cars:Ford"/>
	  <xs:element ref="cars:Mercedes"/>
        </xs:choice>
        <xs:element ref="cars:CarPort" minOccurs="0"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
<xs:schema xmlns:cars="Cars" targetNamespace="Cars">

Data that will be provided to the WebService might look like:

<MyCars xmlns="Cars">
  <Ford ... />
  <Mercedes ... />
  <Ford ... />
  <Ford ... />
  <Mercedes ... />

  <CarPort>5th Avenue</CarPort>
</MyCars>

Please help me and thanks in advance,

Paul

[Former Member]

Paul,

There is a tool in SAP XML Toolkit to generate java classes out of a xml schema.

Take a look at this link:

<a href="http://help.sap.com/saphelp_webas630/helpdata/en/41/e568dc6b6742baa879763e8ea4a490/content.htm">http://help.sap.com/saphelp_webas630/helpdata/en/41/e568dc6b6742baa879763e8ea4a490/content.htm</a>

Regards

Sebastian

[Former Member]

Hi Sebastian,

Thank you for your advice, I'm already closer!

OK, I followed the instructions provided by the link, and I was able to generate the classes.

(After I noticed, that there are NOT all Packages listed that are needed to generate the classes, "SAP_WEBSERVICES_EXT_LIBS_HOME/lib/util.jar" was missing)

Now, I tried to create a Virtual Interface, because I need to provide a web service with this classes, but NetWeaver won't do it. When I choose "New Virtual Interface" from the bean context menu, silently nothing happens.

After closing and opening again, the last step created an empty VI definition.

When I try to deploy, I get errors like in

Are there any information about com.sap.engine.services.webservices.server.deploy.ws.WSDeployGenerator around? Even Google doesn't find anything.

The error is:

Caused by: com.sap.engine.interfaces.webservices.server.deploy.WSDeploymentException: Webservices common deployment exception! The reason is: Unable to generate schemas for complex types from provided virtual interfaces. Additional info: not available
                     	at com.sap.engine.services.webservices.server.deploy.ws.WSDeployGenerator.getSchemas(WSDeployGenerator.java:217)
                     	at com.sap.engine.services.webservices.server.deploy.ws.WSDeployGenerator.generateSingleWSDeployFilesStandard(WSDeployGenerator.java:488)

Thank you in advance for any advise,

Paul

[Former Member]

Hi Paul,

could you please tell me your Netweaver version (is it NW04, NW04s, Sneak Preview or not). In some versions I have noticed some limitations regarding webservices development.

Regards

Sebastian

[Former Member]

Hi Sebastian,

thank you for your quick reply!

Sorry I had some dates out of office.

I run SAP NW 04 SneakPreview.

Kernel / RTE is W32/INTEL Kernel 7.5.0 Build 007-123-057-359

What's the trick to recognize what's actually happing when the recieved XML structure gets parsed? Is there a way to debug the class instanciations and value assignments?

I tried to follow the instructions from <a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/b6d1585f-0c01-0010-7da6-d3ac0b1026a8">SAP NetWeaver J2EE Preview: Remote Debugging of JSP Files</a> but I can't enable debugging on "server0". As this is an off-topic problem I'll post it as a new one on "NetWeaver Platform".

Any hint is appriciated!

Regards,

Paul

Message was edited by: Paul Scheremet