Re: Deploy OJB in WebLogic Server

Christophe Lombart Fri, 21 Mar 2003 12:16:11 -0800

For me, that's ok.

Regards,
Christophe

Armin Waibel wrote:

Hi Christophe and Lucy,
I add your guide with minor modifications to OJB deployment doc.
Could you please review the doc?
Find it on CVS
http://cvs.apache.org/viewcvs.cgi/db-ojb/xdocs/deployment.xml
regards,
Armin
----- Original Message -----
From: "Christophe Lombart" <[EMAIL PROTECTED]>
To: "OJB Users List" <[EMAIL PROTECTED]>
Sent: Tuesday, March 18, 2003 10:36 PM
Subject: Re: Deploy OJB in WebLogic Server
Just to complete the information provided by Lucy, you can find here

how

to deploy OJB (PB) on weblogic. It is quite similar to Jboss. I think Thomas should be interested to receive this small install

guide
for weblogic (Tested only on Weblogic 7):
1. Add the OJB jar files and depedencies into the Weblogic classpath.
2. Compile the following classes (see at the end of this mail) and add
them to the weblogic classpath.
3. Register via the weblogic console the startup class (OjbPbStartup).
The JNDI name and the OJB.properties file path can be specified as
parameters in this startup class (see the code).
4. As usual create the connection pool and the datasource.
5. Check the following entries in the OJB.properties :
ConnectionFactoryClass=org.apache.ojb.broker.accesslayer.ConnectionFacto ryManagedImpl

OJBTxManagerClass=org.apache.ojb.odmg.JTATxManager

JTATransactionManagerClass=org.apache.ojb.otm.transaction.factory.Weblog icTransactionManagerFactory

6. Modify the connection information in the repository.xml (specify

the
datasource name):
   <jdbc-connection-descriptor
       jcd-alias="default"
       default-connection="true"
          platform="Hsqldb"
          jdbc-level="2.0"
          jndi-datasource-name="datasource_demodb"
       eager-release="false"
       batch-mode="false"
       useAutoCommit="0"
       ignoreAutoCommitExceptions="false"
  >
       <sequence-manager
className="org.apache.ojb.broker.util.sequence.SequenceManagerNextValImp l">

<attribute attribute-name="grabSize"

attribute-value="20"/>

</sequence-manager>

</jdbc-connection-descriptor>

7. Write a session bean similar to thoses provided for the JBOSS

samples.

I'm interesting to know if someone make a small comparaison between

EJB
CMP 2.0 and OJB in term of performance, development cost, lifecycle,
cache management... It should interesting for my current project.
Thanks,
Christophe
----------------------------------------------------------------------
------------

OjbPbFactory ----------------------------------------------------------------------

------------
package org.apache.ojb.weblogic;

import org.apache.ojb.broker.ta.PersistenceBrokerFactoryIF;
public interface OjbPbFactory
{
   public static String DEFAULT_JNDI_NAME = "PBFactory";
   public PersistenceBrokerFactoryIF getInstance();
}

----------------------------------------------------------------------
------------

OjbPbFactoryImpl ----------------------------------------------------------------------

------------
package org.apache.ojb.weblogic;
import org.apache.ojb.broker.ta.PersistenceBrokerFactoryFactory;
import org.apache.ojb.broker.ta.PersistenceBrokerFactoryIF;
/**
* PB Factory wrapper class for weblogic
*
*/
public class OjbPbFactoryImpl implements OjbPbFactory
   public PersistenceBrokerFactoryIF getInstance()
   {
       return PersistenceBrokerFactoryFactory.instance();
   }
}

----------------------------------------------------------------------
------------

OjbStartup ----------------------------------------------------------------------

------------
package org.apache.ojb.weblogic;

import javax.naming.*;
import org.apache.ojb.broker.ta.PersistenceBrokerFactoryFactory;
import org.apache.ojb.broker.ta.PersistenceBrokerFactoryIF;
import weblogic.common.T3ServicesDef;
import weblogic.common.T3StartupDef;
import java.util.Hashtable;
/**
* This startup class created and binds an instance of a
* PersistenceBrokerFactoryIF into JNDI.
*/
public class OjbPbStartup
   implements T3StartupDef, OjbPbFactory
   private String defaultPropsFile =
"org/apache/ojb/weblogic/OJB.properties";
private T3ServicesDef services;
   public void setServices (T3ServicesDef services)
   {
       this.services = services;
   }
   public PersistenceBrokerFactoryIF getInstance()
   {
       return PersistenceBrokerFactoryFactory.instance();
   }
   public String startup (String name, Hashtable args)
       throws Exception
   {
try
           String jndiName = (String)args.get ("jndiname");
           if (jndiName == null || jndiName.length () == 0)
               jndiName = OjbPbFactory.DEFAULT_JNDI_NAME;
           String propsFile = (String)args.get ("propsfile");
           if (propsFile == null || propsFile.length () == 0)
System.setProperty("OJB.properties",

efaultPropsFile );
           }
           else
           {
               System.setProperty("OJB.properties", propsFile  );
           }
           InitialContext ctx = new InitialContext ();
           OjbPbFactory factory = new OjbPbFactoryImpl();
           bind (ctx, jndiName, factory);
// return a message for logging return "Bound OJB PersistenceBrokerFactoryIF to " +
jndiName;
       }
       catch (Exception e)
           e.printStackTrace();
           // return a message for logging
           return "Startup Class error : impossible to bind OJB PB
factory";
       }
}
   private void bind(Context ctx, String name, Object val)
           throws NamingException
   {
       Name n;
       for (n = ctx.getNameParser("").parse(name); n.size() > 1; n =
n.getSuffix(1))
       {
           String ctxName = n.get(0);
           try
           {
               ctx = (Context) ctx.lookup(ctxName);
           }
           catch (NameNotFoundException namenotfoundexception)
           {
               ctx = ctx.createSubcontext(ctxName);
           }
       }
       ctx.bind(n.get(0), val);
   }
}

Lucy Zhao wrote:

Christophe:

I'm able to deploy OJB in WebLogic Server. My approach is quite the
same as

yours: created a weblogic startup class and bind the PBFactoryIF to

JNDI

tree. Here are the issues I've experienced: 1) WebLogic server seems not like the "java:/" prefix added to the

JNDI

name. It throws "javax.naming.OperationNotSupportedException: bind

not

allowed in a ReadOnlyContext; remaining name '/ojb/PBAPI'" . The

problem

went away if remove "java:/" from jndi name. In the session EJB, the

code
will be like this:
pbf = ((PBFactoryIF) context.lookup("ojb.PBAPI")).getInstance();
2) In repository-database.xml, change the user id and password to : username="system" password="weblogic" I guess a new user ( resembles database user id and password)
could be

created in weblogic security domain and assign it to a certain group

may
also work. But haven't tried.

Please let me know if this helps.
Cheers!
Lucy Zhao
-----Original Message-----
From: Christophe Lombart [mailto:[EMAIL PROTECTED]
Sent: Wednesday, March 12, 2003 7:44 PM
To: OJB Users List
Subject: Re: Deploy OJB in WebLogic Server
I'm trying to do this via a weblogic startup class. Via this startup
class,  I'm putting the PB factory into a JNDI tree. This part is
working but I got an exception whith the datasource and I don't
understand why : SecurityPrivilegeActionException.
In a session bean, I lookup to the PB facotry and try to execute a
query. At this time, I got this exception.
Christophe

Lucy Zhao wrote:

Have anybody deployed OJB in a WebLogic Server? And wrote an MBean
for
WebLogic Server?

Thanks!

Lucy Zhao
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