Using a JMS control from an EJB project

I'm developing an EJB in Workshop and my EJB is expected to send messages to a JMS queue. How can I use a JMS control (JCX) from my EJB?

If you're talking about making an executable jar file that will work with the bouncycastle jar:
(1) Make a jar as usual with your classes in it
(2) Include a manifest file that specifies the class containing your app's main() method
(3) In that same manifest, make sure that the bouncycastle jar is included in the Class-Path
Details are in Sun's Tutorial: [Packaging Programs in JAR Files|http://java.sun.com/docs/books/tutorial/deployment/jar/index.html] and specifically [http://java.sun.com/docs/books/tutorial/deployment/jar/downman.html|http://java.sun.com/docs/books/tutorial/deployment/jar/downman.html] for the business of having your app recognise the other jar file's classes at runtime.
Doubtless this can all be done from the comfort of your IDE, but I don't know how. There will be documentation on NetBeans site I suppose.
Edited by: pbrockway2 on Jul 23, 2008 8:59 PM

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How can Transformation control be used from an EJB Project?

I want to perform some data transformation directly from within the EJBs. Can Transformation
control be used from an EJB Project? How?

William, thanks for the reply.
I bought this drive module from a private party and was surprised to find out what it was. At first I thought it was just Apple's way of protecting the drive during shipping.
I own it and will probably have an hard time returning it. It was advertised as a 750GB Seagate SATA ES hard drive. The price was very reasonable, especially if I was buying it as a Drive Module. So if I can sell it great, if not I want to use the drive.
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How to use Tuxedo's services from an EJB: Jolt x JET ?

Hi.
Can anyone tell me if an EJB MUST use JET (instead Jolt) to access Tuxedo services
Suppose the following case:
We have a client using JNDI service to obtain an EJB.
In my client i invoke the appropriate methods to create a jolt session and to
start a jolt transaction. My EJB Bean only call Tuxedo services (using Jolt).
Will this application work ? Will EJB code use the transaction created by the
client code ? Will a transaction context exist ?
Thanks in advance.

Hi Daniel,
If you mean WebLogic Server 5.1 by WL 5.1 (instead of WebLogic Enterprise), then
yes, you need to use Jolt until you upgrade to a later release of WebLogic Server.
WTC wasn't fully supported until WebLogic Server 6.1 and later.
The transaction context of the container Jolt is being used in is not extended
to the Tuxedo system. Jolt can be used to start a new and separate transaction
in Tuxedo, but that transaction and the containers current transaction will not
be coordinated.
I'm not sure what you mean when you say:
The transaction management when using Jolt is realized for Jolt API.
There is no relantionship between Jolt transactions and Tuxedo transactions.
Is this rightThe transaction management when using Jolt is transaction management of
the Tuxedo system you are talking to. Jolt is a client side API that uses a
delegated model for transactions. So a transaction started with Jolt starts
a transaction in Tuxedo, but does not affect the transaction context of the
environment the client, i.e., the place where the Jolt call was made. So if
you are using Jolt inside an EJB hosted in the EJB container of WebLogic
Server, the Jolt calls will have no impact or effect on the transaction state
of the EJB.
Regards,
Todd
"Daniel" <[email protected]> wrote:
>
Ok.
We have EJBs running in Weblogic and they are using Tuxedo services.
We have used Jolt instead WTC because we are running WL 5.1. Can i
use WTC with WL 5.1 ?
The transaction management when using Jolt is realized for Jolt API.
There is
no
relantionship between Jolt transactions and Tuxedo transactions. Is this
right
Thanks in advance.
"Todd Little" <[email protected]> wrote:
"Daniel" <[email protected]> wrote:
Hi.
Can anyone tell me if an EJB MUST use JET (instead Jolt) to access
Tuxedo
services
? You can use either Jolt or preferably use WTC and JATMI.
Suppose the following case:
We have a client using JNDI service to obtain an EJB.
In my client i invoke the appropriate methods to create a jolt session
and to
start a jolt transaction. My EJB Bean only call Tuxedo services (using
Jolt).Why is the client creating a Jolt session and transaction? They will
not be associated
with the EJB's execution. The client's Jolt context is not propogated
to the
EJB. Can you explain what it is you want to do? What do you want included
in
the transaction?
Will this application work ? Will EJB code use the transaction created
by the
client code ? Will a transaction context exist ?Well I suppose it depends upon what you mean by work. It comes down
to what are
you trying to accomplish. The client is a WLS client? Is the EJB a
client of
some Tuxedo service? If those are both true, then you would be best
served by
controlling the transaction with the EJB's deployment descriptor and
having the
EJB use WTC to access Tuxedo. WTC will take of propagating any required
transaction
state to Tuxedo.
Regards,
Todd

Using external util JAR from Session EJB

I have a Stateless Session EJB that uses some classes packaged in a utility jar. How do I package the EJB jar with this util jar, and get the app server to recognize this utility jar? including a /lib dir with the utils jar in it, like you would with a WAR, doesn't work.
I've temporarily got this to work by modifying the startup scripts for my app server to ensure my jar is included in the -classpath arg, but this cannot be the intended way. (cannot find details on this in the tutorial).
Thanks in advance!

Well, the answer depends a lot on which appserver you're using, because it obviously depends on how the vendor implemented the containers' ClassLoaders. What usually works is dependent upon a portion of the JVM spec regarding the MANIFEST.MF file. If you package your ejb.jar and library.jar in an .ear file, you can put the following in the ejb.jar MANIFEST.MF:
ClassPath: library.jarNote that there must be at least one blank line at the end of the MANIFEST.MF file.
This works on WebLogic, but, as an example, JBoss uses a single ClassLoader, so I'm not entirely sure how you'd go about the same thing there.
And you're quite right - putting it in the JVM ClassPath is not a good idea...

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We have property files also which we want included as part of the build process
for EJB projects but if we use the IDE build it does not include them. We have
to therefore export the IDE build and customize it to include *.properties like
this
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/> </zip>
which causes a problem for us because the exported build file is specific to a
user's local PC and cannot be used in a team environment.
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include properties files also.

Hey Jamie,
Currently there is no support to include other .properties files into
the internal build. There's a build.properties that you get as part of
an EJB project which you could place your values into and use that as
your template for your team based development and check that into your
source control.
If you'd really like to get gross and hack Workshop a little bit you
could modify the default EJB project template to use your .properties
file for every EJB project you create. This would then splat a copy of
your .properties file into the root of the EJB project.
To do that you'd go to {your BEAHOME}\workshop\templates and crack open
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existing build.properties file. This has the same
effect as replacing the .properties file after you've created your
project only it keeps you from having to perform that step each time.
The downside of this is that each person on your team would then have to
update that template zip file in their workshop installation. (I'd make
sure to backup the original template file before performing this
activity so you can always go back to the original template).
Hope this helps,
-Michael
Jamie wrote:
We have property files also which we want included as part of the build process
for EJB projects but if we use the IDE build it does not include them. We have
to therefore export the IDE build and customize it to include *.properties like
this
<zip basedir="${dest.path}" zipfile="${ejb.outputJar}" encoding="UTF8">  <zipfileset dir="${project.local.directory}" includes="*.properties"
/> </zip>
which causes a problem for us because the exported build file is specific to a
user's local PC and cannot be used in a team environment.
How can we have the IDE build include all the files within an EJB project i.e.
include properties files also.

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I try to execute the callback function when I receive my reply from JMS it his
a loop and never executes the callback to the client. In the same service i replaced
the JMS interaction with a timer and it works fine. The problem only occurrs when
the JMS control receives the reply and then invokes the callback. If I just receive
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JMS Queue a different instance of the session EJB is calledback to when the JMS
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"David" <[email protected]> wrote:
>
I created a platform domain and created a workflow in WLI. I would like
to expose
the workflow from a web service. I successfully used the JMS control
to send
the XML request into WLI and receive the reply from WLI. My problem is
whenever
I try to execute the callback function when I receive my reply from JMS
it his
a loop and never executes the callback to the client. In the same service
i replaced
the JMS interaction with a timer and it works fine. The problem only
occurrs when
the JMS control receives the reply and then invokes the callback. If
I just receive
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If the client code is located in the same "deployment unit" (e.g. EAR
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is required to support redeployment.
Hyung-Jin Kim wrote:
I recently downloaded WL6.0 and I noticed that when a
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Hi,
sounds like you want to try the Pivot table
http://download.oracle.com/docs/cd/E21764_01/apirefs.1111/e12418/tagdoc/dvt_pivotTable.html
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Should we really go for bean data controls for a new project?

Hi,
I am still new data controls and trying to figure out the advantages of using bean data controls for our new project. Our UI is going to have customized UI components and our back end is going to be a tcp/ip server.
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Thanks,
Manoj

Hi,
the POJO data control will always give you a benefit and develope productivity, unless what you have to build fits on a single page - in which case you may not mind the burdon of manual UI component binding
Frank

JMS control

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My actual workaround is to declare in the JWS a member variable of the type of the JMS control I'm trying to deploy and it works (but doesn't look great).
Regards.
Antonio.

Using swing to develop EJB project

Hi, Folks
I am using jbuilder7 to develop swing connect to ejb project, one requirement is that i should doing control with the editable table. That requirement make me to tied with JBuilder component JDBTable. However the development time would become remarkable long. does anybody have experience of using fancy swing and EJB in the same project?
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forget to tell you I am using JDBTable already. the problem is that how
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Regards.

Woes wiring up an ejb to use a database control

first my question & then background:
how do i wire up an ejb to use a database control jcx object so that the dbcontrol is instantiated at runtime?
here's the scene:
i created a java page flow from a database control & this works correctly, but i also need to be able to expose some of the functionality to another deployed application. this application, incidentally is not a workshop application; but rather is a hand-coded war.
the first application (a workshop app) renders forms that use a database control to persist the data. it only uses one table & therefore, there is only one pojo. as i mentioned, this resides in web project & works correctly. i abstracted my dbcontrol & my pojo to a separate java controls project & built this as a library. the jpf still has no problems seeing the dbcontrol.
there is a second application (a non workshop app) that needs to be able to use a method provided by the dbcontrol. i created an ejb in a third project in the first application that makes the call to dbcontrol in the exact same way that the jpf did. but i am finding, however, that the dbcontrol is null whenever the ejb makes the call to it's method.
here's the more detailed design:
i started with a database control. i mapped to my datasource, wrote out the sql for the methods i wanted & generated the pageflow from this. i rewrote the pageflow/jsps to suit my needs & everything just works. i did notice at the time that i generated the page flow that the dbcontrol was never instantiated. here is a snippet of the jpf:
<pre>
public class SiteAlertMessageManagementController extends PageFlowController {
* This is the control used to generate this pageflow
* @common:control
private SiteAlertMessageDBControl dbControl;
public Forward getCurrentMessage() {
SiteAlertMessage currentMessage = dbControl.getCurrentMessage();
</pre>
because SiteAlertMessageDBControl is an interface, i assumed that the '@common:control' annotation told weblogic what it needed to know in order to instantiate a runtime class of time SiteAlertMessageDBControl. because it just worked, i never questioned this.
with the form read/write functionality complete, i assumed i could quickly wrap an ejb around the dbcontrol method & be done with it. i soon realized that i could not create an ejb inside a web project & that an ejb project would not have classpath visibility to my dbcontrol & pojo, so i put the dbcontrol & the pojo into a java control project & made a library out of this. i double checked that the web project could see the classes in the library & they could.
so i created a separate ejb project that also could now see the classes in the library. i thought i was in the home stretch. i now have these projects in my first application:
administrationControls, administrationWeb, & administrationEjb. i moved the administrationControls.jar & the administrationEjb.jar over to the WEB-INF/lib directory of my (remember: non-workshop) war & wired up the code to pull the bean off jndi tree to make the rmi call. but it didn't work. so i backtracked & created a new jsp back in my workshop project that would make the same rmi call so that i could use the debugger. with this as the background, here is my specific problem.
what i noticed is that the ejb code itself works correctly. i guess i should show it as well.
<pre>
public class SiteAlertMessagesAPI extends GenericSessionBean implements SessionBean {
* This is the control used to generate this pageflow
* @common:control
private SiteAlertMessageDBControl dbControl;
public void ejbCreate() {
// Your code here
* @ejbgen:remote-method
public SiteAlertMessage getCurrentMessage() throws Exception {
SiteAlertMessage message = null;
try {
// dbControl is null here
message = dbControl.getCurrentMessage();
catch (Exception e) {
e.printStackTrace();
return message;
</pre>
the problem is that my dbControl object is null. what i did was cut & paste the code from the jpf over to my bean. like i stated earlier, i assumed that the annotation would tell weblogic to instantiate an instance. this was obviously not the case. incidentally, i rewrote my ejbCreate() method like this:
<pre>
public void ejbCreate() {
// Your code here
dbControl = new SiteAlertMessageDBControl();
</pre>
but workshop gives me a "error: this type is abstract and thus cannot be instantiated" warning.
my question is: how do i wire up an ejb to use a database control jcx object so that the dbcontrol is instantiated at runtime?
any light you could shed on this would be most appreciated. thanks,
doug

Hi,
unfortunatly, it's not possible to use a control outside a control or a
web service...
Emmanuel
douglas thomas a ?crit :
first my question & then background:
how do i wire up an ejb to use a database control jcx object so that the dbcontrol is instantiated at runtime?
here's the scene:
i created a java page flow from a database control & this works correctly, but i also need to be able to expose some of the functionality to another deployed application. this application, incidentally is not a workshop application; but rather is a hand-coded war.
the first application (a workshop app) renders forms that use a database control to persist the data. it only uses one table & therefore, there is only one pojo. as i mentioned, this resides in web project & works correctly. i abstracted my dbcontrol & my pojo to a separate java controls project & built this as a library. the jpf still has no problems seeing the dbcontrol.
there is a second application (a non workshop app) that needs to be able to use a method provided by the dbcontrol. i created an ejb in a third project in the first application that makes the call to dbcontrol in the exact same way that the jpf did. but i am finding, however, that the dbcontrol is null whenever the ejb makes the call to it's method.
here's the more detailed design:
i started with a database control. i mapped to my datasource, wrote out the sql for the methods i wanted & generated the pageflow from this. i rewrote the pageflow/jsps to suit my needs & everything just works. i did notice at the time that i generated the page flow that the dbcontrol was never instantiated. here is a snippet of the jpf:
<pre>
public class SiteAlertMessageManagementController extends PageFlowController {
* This is the control used to generate this pageflow
* @common:control
private SiteAlertMessageDBControl dbControl;
public Forward getCurrentMessage() {
SiteAlertMessage currentMessage = dbControl.getCurrentMessage();
</pre>
because SiteAlertMessageDBControl is an interface, i assumed that the '@common:control' annotation told weblogic what it needed to know in order to instantiate a runtime class of time SiteAlertMessageDBControl. because it just worked, i never questioned this.
with the form read/write functionality complete, i assumed i could quickly wrap an ejb around the dbcontrol method & be done with it. i soon realized that i could not create an ejb inside a web project & that an ejb project would not have classpath visibility to my dbcontrol & pojo, so i put the dbcontrol & the pojo into a java control project & made a library out of this. i double checked that the web project could see the classes in the library & they could.
so i created a separate ejb project that also could now see the classes in the library. i thought i was in the home stretch. i now have these projects in my first application:
administrationControls, administrationWeb, & administrationEjb. i moved the administrationControls.jar & the administrationEjb.jar over to the WEB-INF/lib directory of my (remember: non-workshop) war & wired up the code to pull the bean off jndi tree to make the rmi call. but it didn't work. so i backtracked & created a new jsp back in my workshop project that would make the same rmi call so that i could use the debugger. with this as the background, here is my specific problem.
what i noticed is that the ejb code itself works correctly. i guess i should show it as well.
<pre>
public class SiteAlertMessagesAPI extends GenericSessionBean implements SessionBean {
* This is the control used to generate this pageflow
* @common:control
private SiteAlertMessageDBControl dbControl;
public void ejbCreate() {
// Your code here
* @ejbgen:remote-method
public SiteAlertMessage getCurrentMessage() throws Exception {
SiteAlertMessage message = null;
try {
// dbControl is null here
message = dbControl.getCurrentMessage();
catch (Exception e) {
e.printStackTrace();
return message;
</pre>
the problem is that my dbControl object is null. what i did was cut & paste the code from the jpf over to my bean. like i stated earlier, i assumed that the annotation would tell weblogic to instantiate an instance. this was obviously not the case. incidentally, i rewrote my ejbCreate() method like this:
<pre>
public void ejbCreate() {
// Your code here
dbControl = new SiteAlertMessageDBControl();
</pre>
but workshop gives me a "error: this type is abstract and thus cannot be instantiated" warning.
my question is: how do i wire up an ejb to use a database control jcx object so that the dbcontrol is instantiated at runtime?
any light you could shed on this would be most appreciated. thanks,
doug

Is it possible to create data control from wsdl when complextype is used

Getting DCA-40015 error when trying to create a data control from WSDL file.
The error clearly says complextype is not supported . just trying to see if there are any workarounds . because creating data control will save time in developing user interface by dragging and dropping the the data control in jsf page. jdeveloper webservice tester is able to create user interface for me based on wsdl when i run it , trying to develop the user interface using jsf pages
oracle.adf.model.adapter.AdapterException: DCA-40015: Failed to create the structure for schema element "result". The complex type definition of the element is not supported.

Hi,
I could reproduce what I did:
- created WebService from custom Pojo Model
- Made sure all entities implemented serializable
- In the WebServices Wizard, I created XML representations for my entities
- tested with OC4J WebServices tester
- Built ADF data control from WSDL file of deployed WebService
- Created dependency t project containing the POJO entities
- Selected result.xml of each method exposed in the WebService project
- In the structure window, selected "item" (result-->item)
- changed Bean class to my entity class name (absolute name)
This showed my entity in the DC palette
Frank

EventService lookup from ejb project

hi
We want to use the EventService from with in a class which resides in an ejb project of our portal application.
We used the EventService from within the portal webapp project without problems. With
Object o = p_context.lookup( "java:comp/env/ejb/EventService" );
we could lookup the object and narrow it to the EventServiceHome interface. However this does not work within the ejb project.
We get the error message:
"javax.naming.NameNotFoundException: While trying to look up comp/env/ejb/EventService in /app/ejb/scp_helpers.jar#EJBTTHelper.; remaining name 'comp/env/ejb/EventService'"
We tried another name which we found in different depoyment descriptors: p13n_ejb.jar#EventService . No success.
What name do we have to use or shortly: what are we doing wrong? How could we get the EventService SessionBean from within an ejb project?

look up the resource-ref in web.xml (and weblogic.xml). Add the same in ejb-jar.xml (and weblogic-ejb-jar.xml). The entries are not exactly the same, but the concept is the same.
Best regards...
hi
We want to use the EventService from with in a class
which resides in an ejb project of our portal
application.
We used the EventService from within the portal
webapp project without problems. With
Object o = p_context.lookup(
"java:comp/env/ejb/EventService" );
we could lookup the object and narrow it to the
EventServiceHome interface. However this does not
work within the ejb project.
We get the error message:
"javax.naming.NameNotFoundException: While trying to
look up comp/env/ejb/EventService in
/app/ejb/scp_helpers.jar#EJBTTHelper.; remaining name
'comp/env/ejb/EventService'"
We tried another name which we found in different
depoyment descriptors: p13n_ejb.jar#EventService . No
success.
What name do we have to use or shortly: what are we
doing wrong? How could we get the EventService
SessionBean from within an ejb project?

Accessing EJBs from a Web project

Hi,
I am getting the error: "com.sap.engine.services.jndi.persistent.exceptions.NameNotFoundException: Path to object does not exist at java:comp, the whole lookup name is java:comp/env/ejb/UserInfoServer." when I try to access the session bean from my web project. I have followed the instructions explicitly in http://help.sap.com/saphelp_nw04s/helpdata/en/55/29ed5eff965448941c0b42f01b9804/frameset.htm and also tried every other combination I can think of for configuring the references in both the EJB project & the web project (both in the same ear). I do have a jndi name in the visual administrator for localebjs/sap.com/myEar/UserInfoServer. Does anyone have any ideas?
Thanks & merry Christmas/Happy New year to all the SDN folks!

I've managed to get around the problem for the time being by using "/localejbs/provider/application/beanName" - bypassing (I think) the whole JNDI issue - this is OK for now, but it's obviously not a long term fix.
Previously, I had used the default & so did not enter anything in the ejb-j2ee-engine.xml, and so my ejb's showed up nicely in the Visual Administrator JNDI Registry under the localejbs tab as you would expect. The problem appears to be in the Web project - The key is that the error is "Path to object not found" rather than "Name not found". It seems to me that it knows what it is looking for & that it is valid, but doesn't know how to get there! Note that the EJB project is in the same EAR. The only reference to "Path" that I can find is in the help doc above where it says "If the name of the target enterprise bean is not unique in the enterprise application scope, you can enter the path to the JAR file that contains the bean...". I've gone through the Car Rental Application pdf (I can't find the download that contains the entire application) & followed the instructions there explicitly for referencing ejbs from the web..

Using a JMS control from an EJB project

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