Heavy Resources with jersey in NetWeaver 7.3

[Former Member]

Hello,

I have a question concerning heavy resources in NetWeaver 7.3.

We want to use classes form the jersey lib in a portalapp on NetWeaver 7.3. When we reference it in the normal way, we get an exception with following cause:

Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: com.sun.ws.rs.ext.RuntimeDelegateImpl.

This class resides in jersey-bundle-1.0.3.1.jar. We already figured out that this problem is due to the class loading mechanism of the NetWeaver Java Engine as explained in this document: http://scn.sap.com/docs/DOC-1349

We also created a new application (SAP EAR Java EE 5 Project) corresponding to this document and added our lib. Then we referenced to it from the

application-j2ee-engine.xml and SAP_MANIFEST.MF of the original application:

--------- START application-j2ee-engine.xml ---------

<?xml version="1.0" encoding="UTF-8"?>

<application-j2ee-engine xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="application-j2ee-engine.xsd">

    <reference reference-type="hard" prepend="true">

        <reference-target

            target-type="application" provider-name="sap.com">de.hlp.pct.test</reference-target>

    </reference>   

    <provider-name>sap.com</provider-name>

    <fail-over-enable

        mode="disable"

        xsi:type="fail-over-enableType_disable"/>

        <start-up mode="always"/>

</application-j2ee-engine>

--------- END application-j2ee-engine.xml ---------

--------- START SAP_MANIFEST.MF ---------

...

dependencies: <dependency  Implementation-Title="de.hlp.pct.test" Implementation-Vendor-Id="sap.com" />

dependencylist: <dependency  keyname="de.hlp.pct.test" keyvendor="sap.com" />

...

--------- END SAP_MANIFEST.MF ---------

The application which contains the jersey jar has the following structure:

EarContent

  lib

    jersey-bundle-1.0.3.1.jar

  META-INF

    application-j2ee-engine.xml

    application-service.xml

    application.xml

These descriptor files have the following content:

--------- START application-j2ee-engine.xml ---------

<?xml version="1.0" encoding="UTF-8"?>

<application-j2ee-engine xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

xsi:noNamespaceSchemaLocation="application-j2ee-engine.xsd">

</application-j2ee-engine>

--------- END application-j2ee-engine.xml ---------

--------- START application-service.xml ---------

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE application-service SYSTEM "application-service.dtd" >

<application-service>

</application-service>

--------- END application-service.xml ---------

--------- START application.xml ---------

<?xml version="1.0" encoding="ASCII"?>

<application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:application="http://java.sun.com/xml/ns/javaee/application_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/application_5.xsd" version="5">

  <display-name>de.hlp.pct.test</display-name>

  <library-directory>lib</library-directory>

</application>

--------- END application.xml ---------

When I now create an EAR in Developer Studio 7.3 via context menu "export > SAP EAR File" and deploy it to the Server, I can find it with the nwa "Java Class Loader Viewer".

Here there are this two entries:

Compoonent Name                   Loader Name

sap.com/de.hlp.pct.test           sap.com/de.hlp.pct.test

sap.com/de.hlp.pct.test           sap.com/de.hlp.pct.test-library-loader

But still we get the above mentioned exception.

Is there maybe a descriptor file missing in the META-INF folder? Are the descriptor files ok like we have them, or does somebody maybe see a mistake?

I would appreciate any hint or other aproaches for solving this issue.

Thanks and regards

Tim

[satishra]

i see one issue with provider-name in application-j2ee-engine.xml , in the document (attached below) it is mentioned as

com.sap instead of sap.com

http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/60642a88-95fe-2b10-d387-a245d48fc...

[Former Member]

Hi Satish,

thanks for your reply.

I think in our case sap.com is right, as I used Developer Studio to create the "Library App". I used the context menu "export > SAP EAR File" to create the ear. By creating the ear this way obviously "sap.com" is generated as vendor.

When I change it to com.sap I get an:

com.sap.engine.services.dc.api.deploy.DeployException

Unresolved dependency:
name: 'de.hlp.pct.test', vendor: 'com.sap' ( not found in the admitted batch items and the repository)

But anyway, thank again for your help.

Regards

Tim