Is there an implementation of JMS beans?

Hi
Do you know of any implementation of java beans that wraps the JMS API?
Thenx in advance
Eishay Smith

The JOnAS opensource EJB server, which integrates an opensource JMS
implementation (Joram), provides Message-driven beans.
See details on http://www.objectweb.org/jonas.

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hi
every body...i am trying to implement a java bean, i have created the java class and it runs successfuly in jdeveloper envoirnment and after its deployment as jar file i implement it as bean in a bean area in my oracle form and it gives frm-92100
error!!!!! any help???????
zulfiqar

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          Hi,
          I am using JMS and Weblogic (Not Message Driven bean).
          My problem is that after some time my listeners disappears.
          I am sending them a message and instead of 6 listeners
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          So, My question is: Is there any problem working with JMS
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Too little information and a very vague question. Need more info.
          "Tal" <[email protected]> wrote in message
          news:[email protected]..
          >
          > Hi,
          > I am using JMS and Weblogic (Not Message Driven bean).
          > My problem is that after some time my listeners disappears.
          > I am sending them a message and instead of 6 listeners
          > I get only 4 messages.
          > So, My question is: Is there any problem working with JMS
          > and Weblogic???
          > Thanks,
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Is there any difference between java Beans and general class library?

Hello,
I know a Java Bean is just a java object. But also a general class instance is also a java object. So can you tell me difference between a java bean and a general class instance? Or are the two just the same?
I assume a certain class is ("abc.class")
Second question is is it correct that we must only use the tag <jsp:useBean id="obj" class="abc.class" scope="page" /> when we are writng jsp program which engage in using a class?Any other way to use a class( create object)? such as use the java keyword "new" inside jsp program?
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Is there any tutorial for jms development with jdeveloper out there ?

Hi
Thank you for reading my post
is there any tutorial which show us how to use jdeveloper +oc4j for JMS stuff ?
I mean an end 2 end tutorial to build mdb+jms resources in oc4j + client
it will be far better if the tutorial shows how we can use jdeveloper features for this task (if it provide any wizard...)

This is an example of a client:
public String listeningJMS (Context context) throws Exception
String topicName = "jms/demoTopic";
String topicConnectionFactoryName = "jms/TopicConnectionFactory";
TopicConnectionFactory topicConnectionFactory = null;
TopicConnection topicConnection = null;
TopicSession topicSession = null;
Topic topic = null;
TopicSubscriber topicSubscriber = null;
TextMessage message = null;
String fileName = null;
* Look up connection factory and topic. If either does
* not exist, exit.
try
topicConnectionFactory = (TopicConnectionFactory)
context.lookup(topicConnectionFactoryName);
topic = (Topic) context.lookup(topicName);
* Create connection.
* Create session from connection; false means session is
* not transacted.
* Create subscriber.
* Register message listener (TextListener).
* Receive text messages from topic.
* When all messages have been received, enter Q to quit.
* Close connection.
topicConnection =
topicConnectionFactory.createTopicConnection();
topicSession =
topicConnection.createTopicSession(false,
Session.AUTO_ACKNOWLEDGE);
topicSubscriber =
topicSession.createSubscriber(topic);
topicConnection.start();
System.out.println("Receiving: ");
TextMessage msg = (TextMessage) topicSubscriber.receive();
String xmlString =msg.getText();
topicConnection.close();
System.err.println("Received: "+xmlString);
fileName = this.getFileName(msg.getText());
} catch (Exception e) {
throw e;
} finally {
if (topicConnection != null) {
try {
topicConnection.close();
} catch (JMSException e) {throw e;}
return fileName;
public static Context getInitialContext() throws NamingException {
Hashtable env = new Hashtable();
// Standalone OC4J connection details
env.put( Context.INITIAL_CONTEXT_FACTORY, "oracle.j2ee.rmi.RMIInitialContextFactory" );
env.put( Context.SECURITY_PRINCIPAL, "oc4jadmin" );
env.put( Context.SECURITY_CREDENTIALS, "welcome1" );
env.put(Context.PROVIDER_URL, "ormi://localhost:12401");
//env.put(Context.PROVIDER_URL, "ormi://localhost:23791");
return new InitialContext( env );
}

Java.lang.NoSuchMethodError implementing stateless session bean

Hello all,
I am running Weblogic 5.1 on Windows 2000 using the JDK 1.2.2 and the
J2SDKEE 1.2.1.
I have created and successful deployed a state session bean as provided
by the example given at this url:
http://www.weblogic.com/docs51/examples/ejb/basic/statelessSession/index.html
Upon running the client I get the following error:
Beginning TraderClient...
user: system
Creating a trader
There was an exception while creating and using the Trader.
This indicates that there was a problem communicating with the server:
java.rmi.RemoteException: ; nested exception is:
weblogic.rmi.ServerError: A RemoteException occurred in the server method
- with nested exception:
[java.lang.NoSuchMethodError: weblogic.ejb.internal.EJBHomeImpl: method
findMethodInfo(Ljava/lang/String;)Lweblogic/ejb/internal/MethodInfo; not
found]
End statelessSession.Client...
Here is my classpath for starting the Trader Client:
java -ms64m -mx128m -classpath
%WEBLOGIC_HOME%\classes;%WEBLOGIC_HOME%\lib\weblogic510sp11.jar;%WEBLOGIC_HOME%\lib\weblogic510sp11boot.jar;%WEBLOGIC_HOME%\lib\weblogicaux.jar;%WEBLOGIC_HOME%\lib\weblogicbeans.jar;%WEBLOGIC_HOME%\lib\weblogic-tags-510.jar;%WEBLOGIC_HOME%\lib\rmiForMs;%J2SDK_HOME%/lib/j2ee.jar;D:\jdk1.2.2/lib/dt.jar;%PM_ROOT%/lib/hoejbserver.jar;%PM_ROOT%/lib/jcert.jar;%PM_ROOT%/lib/jndi.jar;%PM_ROOT%/lib/jnet.jar;%PM_ROOT%/lib/jsse.jar;%PM_ROOT%/lib/junit.jar;%PM_ROOT%/lib/ldap.jar;%PM_ROOT%/lib/pminput.jar;%PM_ROOT%/lib/pmipdr.jar;%PM_ROOT%/lib/pmopenview.jar;%PM_ROOT%/lib/pmtmn.jar;%PM_ROOT%/lib/pmtools.jar;%PM_ROOT%/lib/pmutil.jar;%PM_ROOT%/lib/pricemaker.jar;%PM_ROOT%/lib/providerutil.jar;%PM_ROOT%/lib/test.jar;%PM_ROOT%/lib/classes12.zip;%PM_ROOT%/lib/hoejbserver.jar;%PM_ROOT%/lib/hoejbclient.jar
com.rii.pricemaker.ho.ejb.client.trader.TraderClient
"t3://localhost:7001" "system" "weblogic"
Here is my startup script for the web logic server:
java -classpath c:\weblogic\classes\boot
-Dweblogic.class.path=c:\weblogic\classes;c:\weblogic\license;c:\weblogic\lib\weblogicaux.jar;c:\weblogic\myserver\serverclasses
-Djava.security.manager
-Djava.security.policy==c:\weblogic\weblogic.policy
-Dweblogic.system.home=c:\weblogic weblogic.Server
Could anyone please give me a clue as to what I might be doing wrong?
Thanks
Bediako George

Thanks alot Matthew, reordering my classpath as follows when starting
the server did the trick:
java -classpath
c:\weblogic\lib\weblogic510sp11boot.jar;c:\weblogic\classes\boot;
-Dweblogic.class.path=C:\weblogic\lib\weblogic510sp11.jar;c:\weblogic\classes;c:\weblogic\license;c:\weblogic\lib\weblogicaux.jar;c:\weblogic\myserver\serverclasses
-Djava.security.manager
-Djava.security.policy==c:\weblogic\weblogic.policy
-Dweblogic.system.home=c:\weblogic weblogic.Server
I am placing this here as a benefit to others.
Thanks again,
Bediako
Matthew Shinn wrote:
Hi,
You might try running ejbc on the jar file again. Also, if your server has a service pack installed, make sure it is at the head of the classpath when invoking ejbc.
- Matt
Bediako George wrote:
Hello all,
I am running Weblogic 5.1 on Windows 2000 using the JDK 1.2.2 and the
J2SDKEE 1.2.1.
I have created and successful deployed a state session bean as provided
by the example given at this url:
http://www.weblogic.com/docs51/examples/ejb/basic/statelessSession/index.html
Upon running the client I get the following error:
Beginning TraderClient...
user: system
Creating a trader
There was an exception while creating and using the Trader.
This indicates that there was a problem communicating with the server:
java.rmi.RemoteException: ; nested exception is:
weblogic.rmi.ServerError: A RemoteException occurred in the server method
- with nested exception:
[java.lang.NoSuchMethodError: weblogic.ejb.internal.EJBHomeImpl: method
findMethodInfo(Ljava/lang/String;)Lweblogic/ejb/internal/MethodInfo; not
found]
End statelessSession.Client...
Here is my classpath for starting the Trader Client:
java -ms64m -mx128m -classpath
%WEBLOGIC_HOME%\classes;%WEBLOGIC_HOME%\lib\weblogic510sp11.jar;%WEBLOGIC_HOME%\lib\weblogic510sp11boot.jar;%WEBLOGIC_HOME%\lib\weblogicaux.jar;%WEBLOGIC_HOME%\lib\weblogicbeans.jar;%WEBLOGIC_HOME%\lib\weblogic-tags-510.jar;%WEBLOGIC_HOME%\lib\rmiForMs;%J2SDK_HOME%/lib/j2ee.jar;D:\jdk1.2.2/lib/dt.jar;%PM_ROOT%/lib/hoejbserver.jar;%PM_ROOT%/lib/jcert.jar;%PM_ROOT%/lib/jndi.jar;%PM_ROOT%/lib/jnet.jar;%PM_ROOT%/lib/jsse.jar;%PM_ROOT%/lib/junit.jar;%PM_ROOT%/lib/ldap.jar;%PM_ROOT%/lib/pminput.jar;%PM_ROOT%/lib/pmipdr.jar;%PM_ROOT%/lib/pmopenview.jar;%PM_ROOT%/lib/pmtmn.jar;%PM_ROOT%/lib/pmtools.jar;%PM_ROOT%/lib/pmutil.jar;%PM_ROOT%/lib/pricemaker.jar;%PM_ROOT%/lib/providerutil.jar;%PM_ROOT%/lib/test.jar;%PM_ROOT%/lib/classes12.zip;%PM_ROOT%/lib/hoejbserver.jar;%PM_ROOT%/lib/hoejbclient.jar
com.rii.pricemaker.ho.ejb.client.trader.TraderClient
"t3://localhost:7001" "system" "weblogic"
Here is my startup script for the web logic server:
java -classpath c:\weblogic\classes\boot
-Dweblogic.class.path=c:\weblogic\classes;c:\weblogic\license;c:\weblogic\lib\weblogicaux.jar;c:\weblogic\myserver\serverclasses
-Djava.security.manager
-Djava.security.policy==c:\weblogic\weblogic.policy
-Dweblogic.system.home=c:\weblogic weblogic.Server
Could anyone please give me a clue as to what I might be doing wrong?
Thanks
Bediako George

Is there a built in OA bean for pop windows?

Hi All,
I have requirement to create a pop window on a column in table region.
This pop window will take parameters from the VO associated with the table and populate with additional information.
Is there a built in pop window bean that can be used. Or the only option is to create a custom page and have javascript :window.open function to have pop window functionality?
Thanks

Yup, no popup bean provided by the framework. Only option is to use javascript handled windows.
--Shiv

Implementation of Entity Beans

Hi..
Can anyone help me in my doubts?
Whenever i have an entity bean object , and say at given instant of time more tan one user wants to update the data that the entity bean represent.
Take a particular case:
One user calls an entity bean modifies itzz state say one field but doesn't commit , now at the same time some other user modifies the state say another field and commits it.
What will happen to the modification made by the first user?are they lost or they are also commited with it.Now the first user undo itzz changes and commit it . What will be the state of the entity bean?
Thankzz in advance !!
Somilj

You first need to understand why two users would update the same row at the same time, and then define what you wish the expected results to be (the behaviour of locking all other users whilst one user updates data may be what you require).
Once you understand your desired behaviour, you can then consider how isolation levels and transactions help achieve that behaviour.
Loosely speaking, you can consider a transaction as an atomic operation on data in a database (enterprise resource), and Isolation levels as how that data may be manipulated when held in a transaction.
You can set isolation levels per entity bean method (e.g. SERIALIZABLE or REPEATABLE_READ) and indicate, per session bean method how it partakes in any transaction (e.g.TX_REQUIRED or TX_NOT_SUPPORTED).
For example, suppose you need to set some data in a row, perform a lot of other calculations controlled by a session bean, using other session and entity beans, then allow that data to be changed by someone else. To do so, it is likely that you would include all entity/session beans in a container managed transaction with the isolation level for the data set to serializable. Here the data would be 'locked' until the complete operation had finished.
Suppose you only need to lock the data for a small part of the overall computation, then you could choose to use several container managed transactions, or place the update of data outside a transaction, or use explicit Bean Managed Transactions (where the code you right manages the transaction).
Adam
Hi..
Can anyone help me in my doubts?
Whenever i have an entity bean object , and say at
given instant of time more tan one user wants to
update the data that the entity bean represent.
Take a particular case:
One user calls an entity bean modifies itzz state say
one field but doesn't commit , now at the same time
some other user modifies the state say another field
and commits it.
What will happen to the modification made by the first
user?are they lost or they are also commited with
it.Now the first user undo itzz changes and commit it
. What will be the state of the entity bean?
Thankzz in advance !!
Somilj

How to implement request/response domain in JMS

hi friends,
I need help regarding implementing request/response domain
in jms.please help me.

See the TopicRequestor and QueueRequestor helper classes in the JMS API.
FWIW there's a POJO based request/response implementation using JMS here...
http://lingo.codehaus.org
you might find the source code useful as it does efficient request/response in a highly concurrent way using JMS under the covers.
James
http://logicblaze.com/

Implementing java beans in forms 10g [Problem]

Hi All,
I am trying to implement the java bean in the forms 10g
I performed the following steps, but no luck.. Could anybody please help me in this?
I have created a simple java class
package mypackage1;
public class MyClass
public String GetString(String a)
return a;
Make a jar myjar.jar out of it.
Copy this jar files in $ORACLE_HOME/forms/java directory
and set the archive.jini parameter in formsweb.cfg to
archive_jini=frmall_jinit.jar,Myjar.jar
Created a simple form having one button, one textbox
Set the implementation class property of text item to mypackage1.MyClass
on button pressed trigger, I wrote
set_custom_property('block2.text_item4',1,'GetString','Hello World');
Ideally, on button pressed, it should show the text "Hello World" in the etxt box. But on button pressed nothing is happening and in java console on error is appearing.
My java console output is
Loading http://asst104253:8889/forms/java/frmall_jinit.jar from JAR cache
Loading http://asst104253:8889/forms/java/Myjar.jar from JAR cache
proxyHost=null
proxyPort=0
connectMode=HTTP, native.
Forms Applet version is : 10.1.2.0
Could anyone please tell me what I am doing wrong?? And how do I achieve this functionality??
Please, any help appreciated !!

Hi there
The is plenty wrong with this code:
1. MyClass is not extending VBean
2. There is no public boolean setProperty(ID ID, Object args) method and no property IDs have been defined so set_custom_property('block2.text_item4',1,'GetString','Hello World'); will not execute anything
3. If you're hoping to return values back from the bean, you need to define a custom event and associated ID.
If you're just looking for some java code to return values in a similar manner as normal Oracle functions then you may want to consider using forms java stored procedures which are based on static java methods. Beans are really more for interaction type stuff with other applications.
But any way if you want to do it this way (i.e. using beans) then at very least you class should look something like (Note, I have not compiled is so there may be a few errors):
package mypackage1;
import oracle.forms.handler.IHandler;
import oracle.forms.ui.CustomEvent;
import oracle.forms.properties.ID;
import oracle.forms.ui.VBean;
import oracle.forms.engine.Main;
import oracle.forms.engine.*;
import oracle.forms.handler.*;
public class MyClass extends VBean
// initiating event id
protected static final ID pgetString = ID.registerProperty("GetString");
// return value id
private static final ID preturnValue = ID.registerProperty("returnValue");
// return event id
protected static final ID preturn = ID.registerProperty("returnEvent");
static IHandler mHandler;
public String GetString(String a)
// may do some string manipulation here.
return a;
public boolean setProperty(ID ID, Object args)
if (_ID== pgetString)
if (_args instanceof String)
String myArg = (String)_args;
mHandler.setProperty(preturnValue,getString(myArg));
CustomEvent ce = new CustomEvent(mHandler, preturn);
dispatchCustomEvent(ce);
Keep your button as is and then to return the value back into forms place a WHEN-CUSTOM-ITEM-EVENT trigger on the bean area with something like this:
DECLARE
     BeanValListHd1 PARAMLIST;
     ParamType NUMBER;
     EvenName     Varchar2(20);
     CurrentValue Varchar2(2000);
BEGIN
     BeanValListHd1 := get_parameter_list(:SYSTEM.CUSTOM_ITEM_EVENT_PARAMETERS);
     IF :SYSTEM.Custom_Item_Event = 'returnEvent' THEN
          IF iD_NULL(BeanValListHd1) THEN
          MESSAGE('NO PARAMETER FOUND FOUND');
          ELSE
          GET_PARAMETER_ATTR(BeanValListHd1,'returnValue',ParamType,CurrentValue);
          MESSAGE('IN CUSTOM EVENT THE STRING RETURNED IS '|| CurrentValue);
          END IF;
     ELSE
          MESSAGE('no value');
     END IF;
END;
hope this helps
Q

Implementing synchronous request response behaviour with JMS

i have a requirement wherein i send a list of tasks to be executed (this has to be executed in parallel so taking the JMS route) and should wait for the results of al these tasks. How could i do this with JMS? I need JMS since the originally these tasks was being done using threading and since in j2ee it is not advisable to spawn threads we are planning to use JMS so that we can have concurrency that is done by the container. can someone please tell how can i simulate this synchronous request-response paradigm using JMS?

It may not be great idea however possibility of State full session bean can be explored.
State full session bean will send all 100 tasks to JMS queue without waiting for the result. There will be another JMS program (Say ResponseCollector) which will listen on queue for all responses. Once ResponseCollector collects all the responses, it will trigger the state full session bean again.
You can use some properties in JMS header to discriminate between the request and response on same queue and apply the message selector.

JMS implementation of P2P protocol: need for statefulness!

Hello!
I have to implement the Chord peer-to-peer protocol using JMS. I'm thinking of using a message-driven bean per node in order to manage asynchronous communication (and I've been able to make this work).
The problem is that the protocol requires that every node keep some information about its neighbours, about the data it manages, etc.
This means I have to keep a state of the node, which doesn't seem to be possible if I use EJBs.
I think that a possible solution might be to couple the message-driven JMS bean with a session bean, and instruct the message-driven been to forward to the session bean the messages it receives. This should allow the session bean to manage the state of the node, while leaving the communication stuff to the message-driven bean.
My doubts are:
- How can the message-driven bean find and contact the associated session bean?
- Is this design practical?
Thank you!

You are accessing the runtime mbean of a JMS destination. The JNID name of a destination is not available on the runtime destination MBean.
If you are using jms-system-resource to deploy your JMS module, you should be able to access the deployment mbean of the destination. The starting MBean for JMS is JMSSystemResourceMBean in this case.

How to disable cache implementation in 8.1 SP6 for entity beans

How to disable cache implementation in 8.1 SP6 for entity beans
In our production environment, we want to disable cache implementation for entity beans. We are using weblogic 8.1 SP6.
Weblogic cache implementation has been causing many cachefull exceptions so we want that it fetches the data from database everytime instead of cache.

Check the "max-beans-in-cache" setting in your weblogic-ejb-jar.xml. The cache full exception, means that a new bean could not be created because of this cache being full.
Nothing to do with fetching from the database directly.
If you really want direct fetches then do not use beans at all. Consider using direct JDCB/SQL calls (without a entity bean) to fetch huge data.
Let's again review your application based on the below explanation before making a decision on which configuration change to perform:
If you truly have many ejbs simultaneously enrolled in transactions, then yes, the cache must be big enough to hold all the instances.
Your cache must have a max size large enough to handle your peak simultaneous transaction load.
Also, try to ask the following query to your application developer. Does every user actually have to have more than one bean in the cache ? Are many of these values read-only reference values that are not updated ?
SOLUTION CHOICE:
1. If you are testing with more number of users simultaneously, then you will need to increase the "max-beans-in-cache" setting in your weblogic-ejb-jar.xml to match the load.
2. If you have few users but still seeing a lot of beans, then consult with your application developer and try to ask the above questions (Does every user have more than......) and based on that try to redesign/tune your application to make it an effective Entity bean model.
3. If you have queries where huge result sets are returned, consider using plain/direct JDB/SQL calls.
Arun

JMS implementation documentation

Hi,
Is there doumentation available on JMS-based MDBs? We need external clients to receive the JMS messages.
I have seen the howto article on the JMS. This is how to use JMS-based MDBs within the app server.
I need to communicate to external clients.
Please do let me know where I can find info on this.
thanks a lot
Padmaja Ragavendra

Please take a look at the Services Guide at http://otn.oracle.com/tech/java/oc4j/pdf/oc4j_j2ee_svcguide_r2.pdf and look for the JMS chapter.
It has documentation how to configure external JMS providers like AQ, SonicMQ, etc.
regards
Debu Panda
Oracle

Is there an implementation of JMS beans?

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