Problem in using Scheduler API

[Former Member]

Hello Friends

I am trying this concept of Job Scheduler API of Netweaver for the first time . The problem that I am encountering is , after successfull deployment of my application DC , I cant see the job created by me in the job definations on server

I am laying down the approach that I took for the development of job : -

1) I created one EJB Module DC( sample_mdb_session ) and created one Message Driven bean

( JobBean ) and laid down the logic to be run on the execution of job

I have also included the scheduler api in the build path of my DC

2) nextly I created the required job-definition.xml and did the changes in ejb-j2ee.xml

ejb-j2ee.xml

<enterprise-beans>

<enterprise-bean>

<ejb-name>com.sap.scheduler.examples.session.JobBean</ejb-name>

<jndi-name>JobBean</jndi-name>

<resource-ref>

<res-ref-name>JobQueueFactory</res-ref-name>

</resource-ref>

<message-destination-ref>

<message-destination-ref-name>JobQueue</message-destination-ref-name>

<jndi-name>JobQueue</jndi-name>

</message-destination-ref>

</enterprise-bean>

</enterprise-beans>

_job-definitons.xml_

<job-definitions>

<job-definition name="JobBean"

description="Logs a string and calculates its length">

<job-definition-parameter name="UserName"

data-type="String"

direction="IN"/>

<job-definition-parameter name="NameLength"

data-type="Integer"

direction="OUT"/>

</job-definition>

</job-definitions>

3) In the application DC( sample_application_dc ) I did the required changes in application-j2ee-engine.xml

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

<reference reference-type="hard">

<reference-target provider-name="sap.com" target-type= "service">

scheduler~runtime

</reference-target>

</reference>

<modules-additional>

<module>

<entry-name>demo.sap.com~sample_mdb_session.jar</entry-name>

<container-type>scheduler~container</container-type>

</module>

</modules-additional>

</application-j2ee-engine>

The document that i had reffered to construct everything was actually dealing with an EJB project and a respective .ear project, things were working fine till the time I was dealing with local EJB projects but as soon as I started working with DCs , the problems occured

And when i deployed the application on the server it is deployed successfully , but I cant see the job in job definitions in SAP Netweaver Administrator > java scheduler section

What i am doubting is that the changes that i did in the xmls are not apt , so If any one on the forum has done the scheduling job earlier can please send the required xml code as that may help in solving the problem

Edited by: Smriti_techno on Apr 22, 2009 9:28 AM

[Former Member]

Thanks for pointing that out. Not sure how it happened -

I was able to move a bit further with this but now I am getting a new error in my ejb-j2ee-engine.xml -

Description Resource Path Location Type

cvc-complex-type.2.4.a: Invalid content was found starting with element 'message-props'. One of '{ejb-ref, ejb-local-ref, resource-ref, resource-env-ref, message-destination-ref, server-component-ref, ior-security-config, bean-props}' is expected. ejb-j2ee-engine.xml LocalDevelopment_{LocalDevelopment}pdf(2fejb~demo.sap.com/bin/META-INF line 8 XML Problem

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

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

xsi:noNamespaceSchemaLocation="ejb-j2ee-engine_3_0.xsd">

<enterprise-beans>

<enterprise-bean>

<ejb-name>HelloWorldBean</ejb-name>

<jndi-name>HelloWorldBean</jndi-name>

<message-props> //this is where NWDS is showing error

<destination-name>JobQueue</destination-name>

<connection-factory-name>JobQueueFactory</connection-factory-name>

</message-props>

</enterprise-bean>

</enterprise-beans>

</ejb-j2ee-engine>

job-definition.xml is

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

<job-definitions>

<job-definition name="HelloWorldBean"

description="Logs a string and calculates its length">

<job-definition-parameter name="UserName"

data-type="String" direction="IN" />

<job-definition-parameter name="NameLength"

data-type="Integer" direction="OUT" />

</job-definition>

</job-definitions>

[vladislav_iliev]

Hi Shiv

First of all, the reason for the previous problem is unmatched job definition names between job-definition.xml and MDB anotation for message selector - they must be equal as described [here|http://help.sap.com/saphelp_nwce72/helpdata/en/4a/685eb452175135e10000000a42189b/frameset.htm].

In your job-definition.xml the name is HelloWorldBean and in your anotation this name is HelloWorldJob.

You should decide which name you would like to use.

Second - for the xml validation issue that the IDE is complaining about - there is no attribute "message-props" for the EJB project version 3.0. You can use "bean-props" instead.

In more details, there are 2 options to define ejb-j2ee-engine.xml:

1. For EJB 2.1 projects:

-

---

<?xml version="1.0" encoding="UTF-8"?> <ejb-j2ee-engine xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> &nbsp;<enterprise-beans> &nbsp;&nbsp;<enterprise-bean> &nbsp;&nbsp;&nbsp;<ejb-name>HelloWorldBean</ejb-name> &nbsp;&nbsp;&nbsp;<jndi-name>HelloWorldBean</jndi-name> &nbsp;&nbsp;&nbsp;&nbsp;<message-props> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<destination-name>JobQueue</destination-name> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<connection-factory-name>JobQueueFactory</connection-factory-name> &nbsp;&nbsp;&nbsp;&nbsp;</message-props> &nbsp;&nbsp;&nbsp;</enterprise-bean> &nbsp;&nbsp;</enterprise-beans> </ejb-j2ee-engine>

2. For EJB 3.0 projects

-

---

<?xml version="1.0" encoding="UTF-8"?> <ejb-j2ee-engine xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="ejb-j2ee-engine_3_0.xsd"> &nbsp;<enterprise-beans> &nbsp;&nbsp;<enterprise-bean> &nbsp;&nbsp;&nbsp;<ejb-name>HelloWorldBean</ejb-name> &nbsp;&nbsp;&nbsp;<jndi-name>HelloWorldBean</jndi-name> &nbsp;&nbsp;&nbsp;&nbsp;<bean-props> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<property> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<property-name>destination-name</property-name> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<property-value>JobQueue</property-value> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</property> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<property> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<property-name>connection-factory-name</property-name> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<property-value>JobQueueFactory</property-value> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</property> &nbsp;&nbsp;&nbsp;&nbsp;</bean-props> &nbsp;&nbsp;</enterprise-bean> &nbsp; </enterprise-beans> </ejb-j2ee-engine>

Cheers!

Vladislav

[Former Member]

Hi Vladislav,

Thanks for the response.

The changes in ejb-j2ee-engine.xml does work now.

As far as job-definition.xml is concerned , I think the names I had kept were same. In my first post, the name was "HelloWorldJob" and in the second post I had created another project and changed the name. Thats the reason there were two different name. I guess the problem was that I was keeping my Java class under src folder whereas it should be under ejbmodule folder.

I really appreciate your help.

Thanks a ton.

Cheers,

Shiv

[Former Member]

I was not naming the xml properly

[Former Member]

Hi Smriti,

I am having the same problem what you faced when I moved from EJB Project to EJB DC for the scheduler API.

The exception I am getting is -

Description:

1. ASJ.dpl_ds.006193 Error while deploying ear file E:\usr\sap\CE2\J91\j2ee\cluster\server0\temp\tc_bldeploy_controller\archives\764\demo.sap.com~helloworldear.ear; nested exception is:

com.sap.engine.services.deploy.container.DeploymentException: Deployment of jobs in application [demo.sap.com/helloworldear] failed, reason is : [There is no bean for job definition "HelloWorldJob".]

Bean class

package org.csagroup;

import java.util.logging.Logger;

import javax.ejb.ActivationConfigProperty;

import javax.ejb.MessageDriven;

import com.sap.scheduler.runtime.JobContext;

import com.sap.scheduler.runtime.mdb.MDBJobImplementation;

//Specify message selector

//and destination type

@MessageDriven(activationConfig={

@ActivationConfigProperty(propertyName="messageSelector", propertyValue="JobDefinition='HelloWorldJob'"),

@ActivationConfigProperty(propertyName="destinationType",propertyValue="javax.jms.Queue")})

public class HelloWorldBean extends MDBJobImplementation {

public void onJob(JobContext ctx) {

//Implement business logic

Logger log = ctx.getLogger();

log.info("Hello World!");

}

}

ejb-j2ee-engine.xml

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

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

<enterprise-beans>

<enterprise-bean>

<ejb-name>org.csagroup.HelloWorldBean</ejb-name>

<jndi-name>HelloWorldBean</jndi-name>

<resource-ref>

<res-ref-name>JobQueueFactory</res-ref-name>

</resource-ref>

<message-destination-ref>

<message-destination-ref-name>JobQueue</message-destination-ref-name>

<jndi-name>JobQueue</jndi-name>

</message-destination-ref>

</enterprise-bean>

</enterprise-beans>

</ejb-j2ee-engine>

job-definition.xml

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

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

<enterprise-beans>

<enterprise-bean>

<ejb-name>org.csagroup.HelloWorldBean</ejb-name>

<jndi-name>HelloWorldBean</jndi-name>

<resource-ref>

<res-ref-name>JobQueueFactory</res-ref-name>

</resource-ref>

<message-destination-ref>

<message-destination-ref-name>JobQueue</message-destination-ref-name>

<jndi-name>JobQueue</jndi-name>

</message-destination-ref>

</enterprise-bean>

</enterprise-beans>

</ejb-j2ee-engine>

application-j2ee-engine.xml

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

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

<enterprise-beans>

<enterprise-bean>

<ejb-name>org.csagroup.HelloWorldBean</ejb-name>

<jndi-name>HelloWorldBean</jndi-name>

<resource-ref>

<res-ref-name>JobQueueFactory</res-ref-name>

</resource-ref>

<message-destination-ref>

<message-destination-ref-name>JobQueue</message-destination-ref-name>

<jndi-name>JobQueue</jndi-name>

</message-destination-ref>

</enterprise-bean>

</enterprise-beans>

</ejb-j2ee-engine>

I would really appreciate if you could help me with this.

Thanks in advance.

[vladislav_iliev]

Hi Shiv,

It seems that you have messed up the mapping between EJB and job definition. Could you post the content of your job-definition.xml (what you've posted is one ejb-j2ee-engine.xml three times:) ).

Vladi

[sumeetsj]

Hi Smriti,

I am trying to implement job scheduler in Webdyn pro java NWDS 7.3. I've follwed the pdf : http://scn.sap.com/docs/DOC-2665

and i've done some changes required for 7.3.

The same changes are are done in ejb-j2ee-engine.xml, job-definition.xml and application-j2ee-engine.xml as you have mentioned.

But when i deployed the application on the server it is deployed successfully , but I cant see the job in job definitions in SAP Netweaver Administrator > java scheduler section.

Can u please help me what changes have you done in naming the xml.

Thanks in advance.

[Former Member]

problem solved