Accessing local Java objects

Hi All,
Can i access local java objects(Client System) with out using any webserver ?
is there any way to access Java RMI in AIR
Best Regards

Not directly... take a look at the Merapi project and see if that helps you meet your requirements.
http://www.merapiproject.net/

Similar Messages

Error could not access a java object field called allowAppDataInServContext after Applying Security

After applying the security patch 12-26 I am getting the error "Could not access a java object field called allowAppDataInServContext". When I removed the update the error goes away. When I read the update it returns.
The error states it occurred in the following line: cfapplication name="somename" clientmanagement="No" sessionmanagement="Yes" setclientcookies="Yes"

Is it a linux server? Look at the following, second comment.
http://blogs.coldfusion.com/post.cfm/coldfusion-security-update
^_^
EDIT: Also, http://www.shilpikhariwal.com/2012/12/security-hotfix-for-coldfusion-9-and.html

Can't access remote java object

I'm using Flex Builder 3 plug-in and trying to build a simple
demo app that uses JDBC to return results to a datagrid.
However, I getting the following error message:
"[MessagingError message='Destination 'enrollmentService'
either does not exist or the destination has no channels defined
(and the application does not define any default channels.)']"
faultCode="InvokeFailed" faultDetail="Couldn't establish a
connection to 'enrollmentService'"]
I have the enrollService.class deployed under WEB-INF/classes
of the blazeds webapp under Tomcat. (Just not sure exactly where to
put it.) Also in my project in Flex builder I created a
WEB-INF/classes under WebContent and put the class there as well.
I've attached both my remoting-config.xml and my apps .mxml
files
I'm pulling my hair out trying to figure out what needs to go
where in order my remote object to be available. Any help would be
much much appreciated.

Just use event.target which will return the doc object.
see sample code below
var doc = event.target;
doc.print();
doc.saveAs();
doc.closeDoc();
Nith

Accessing Java Object with out any application servers

Hi,
I would be much thankful if any one guide/suggest me how to
access an java object with out using any application servers.I am
having an java object which holds dummy data and an mxml file which
contains some text fields. My plan was to access the java object
and put the dummy data in the text fields. I am using RemoteObject
for this. I am not able to proceed further. Please help me.
Thanks in advance
Regards
Karun Kumar

You can check The Merapi Project it's still in the
development phase but it'll allow to an AIR app invoke a java class
and run it as it were inside your app. But that's something you
can't take into production yet, why don't u wanna use a server
backend?

How to use the Java objects or methods in pl/sql function as a parameter

dear all,
I java object passed as a parameter in pl/sql. how can i access the java objects as parameter in pl/sql function. please give a soultion to me
mohan reddy

I'm not sure whether this would help you.
Have a look at this program to list files from a directory.
CREATE GLOBAL TEMPORARY TABLE DIR_LIST
( FILENAME VARCHAR2(255) )
ON COMMIT DELETE ROWS
Table created.
create or replace
and compile java source named "DirList"
as
import java.io.*;
import java.sql.*;
public class DirList
public static void getList(String directory)
throws SQLException
File path = new File( directory );
String[] list = path.list();
String element;
for(int i = 0; i < list.length; i++)
element = list;
#sql { INSERT INTO DIR_LIST (FILENAME)
VALUES (:element) };
Java created.
SQL>
create or replace
procedure get_dir_list( p_directory in varchar2 )
as language java
name 'DirList.getList( java.lang.String )';
SQL> exec get_dir_list( 'C:\Bhagat' );
PL/SQL procedure successfully completed.
Thanks,
Bhagat

How to retrieve the java object in a proxy service in osb -- Plz help

Hi all,
I have a singleton java class which runs whenever the weblogic server gets started and store the output in its object. I need to access this java object from a proxy service in osb.
We tried using java call out and retrieved that object but we couldn't know how to parse that object into XML.
We are not sure of using the java call out in osb to solve this purpose because whenever we use a java callout, that particular java code will run which is not the case of singleton class.
So kindly help us how to retrieve the java object which holds the output without running the java code every time because its already run and holding the output in its object.
Regards
Prabhu

here the doc http://download.oracle.com/docs/cd/E13159_01/osb/docs10gr3/userguide/context.html#wp1106656
but I guess you are already at the stage of getting a POJO in a first Java Callout and passing the POJO to a second Java Callout, which should then return it to OSB as a XMLObject.
My recommendation is to write a Java function which returns a XMLObject and uses a XMLCursor to populate it with the values of the POJO.
An XMLObject returned to the OSB is automatically transformed in a "XML" variable (which in reality is represented as a XMLObject in the Pipeline context)
Here some code sample:
http://www.javamonamour.org/2010/09/how-to-create-xmlobject-using-xmlcursor.html

Nwdi-managed access of pcd-objects from java web dynpro

Hi,
im am trying to access portal pcd-objects from a java web dynpro component (namely getting and setting personalized iview properties). for locally managed web dynpro components this works fine with the code below.
when i try the same with a nwdi managed web dynpro component i run into problems regarding references to used dcs. for instance, i need to reference used dc SAP_JTECHS/tc/epbc/pcm/adminapi/java because the build needs tcepbcpcmadminapijava.jar which is inside the mentioned dc. but access permissions of this dc don't allow the dependency. when i try to "add used dc ..." in nwds i get the error message: illegal dependency: access list does not allow use of ...
has someone any solution for this problem? are there other ways of accessing pcd-objects from java web dynpro (nwdi managed!)?
thanks
heiko
private static void savePersonalizationData(String value) {
     try {
          IAttributeSet attributeSet = (IAttributeSet) getIview(IVIEW);
          attributeSet.putAttribute(ATTRIBUTE, value);
          attributeSet.save();
     } catch (Exception e) {
private static Object getIview(String pcdPath) throws Exception {
     Hashtable env = new Hashtable();
     env.put(
          com.sap.portal.directory.Constants.REQUESTED_ASPECT,
          com.sap.portal.pcm.admin.PcmConstants.ASPECT_SEMANTICS);
     env.put(
          Context.SECURITY_PRINCIPAL,
          WDClientUser.getCurrentUser().getSAPUser());
     env.put(
          IPcdContext.PCD_PERSONALIZATION_PRINCIPAL,
          WDClientUser.getCurrentUser().getSAPUser());
     InitialContext iCtx = new InitialContext(env);
     return iCtx.lookup(pcdPath);

Hi Kust,
To access the PCD objects the code you used looks ok for me but your main issues is related to the dc access permissions. This thread discussed about the similar issue. Please review this below thread.
/message/979328#979328 [original link is broken]
Regards
Krishna Reddy

Access local disk via Java Web Start??

HI all ,
I had saw the JWS document.
It indicate we can't access local disk via JWS in that Security.
If I need to access local disk by command, does anyone have better suggestion.
And can I run *.bat via Java Web Start?
Thanks very much for your help.
Morris

I do the both thing but still don't access to Local disk.
I just write a simple test class within extend another that create a file (and of course sign it)but still can't create a file Local disk. this MAKE ME MAD and LOOSE MY JOB .
here is my JNLP file:
<?xml version="1.0" encoding="utf-8"?>

<jnlp
spec="1.0+"
codebase="file:///d:/"
href="test.jnlp">
<information>
<title>Me</title>
<vendor>myself</vendor>
<homepage href="http://www.me.com"/>
<description> test test test</description>
<description kind="short">Test creatin of log file on client </description>
</information>
<offline-allowed/>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.4"/>
<jar href="test2.jar"/>
</resources>
<application-desc main-class="secMan.Test"/>
</jnlp>

Accessing an UIComponent object from a .java

Hello,
I have i new problem here, i have fetch in the java-doc but in vain ...
Does somebody have an example on the syntax of the code that i have to put in my java file to access an UIComponent object ?
Thanks :-)
In fact here is what i'd like to do:
I would like to have in my jsp, a select list with values defined in my backing bean according to a parameter. For example, a product can have 2 status: sold out or available. If available i want the select list to have values as 1,2 and if sold out 2,3 ...

No in fact what i want is:
I want a select list with 4 options:
- Choice 1
- Choice 2
- Choice 3
- Choice 4
if the status is 1, then i want my select list to contain :
- Choice 1
- Choice 2
In this case, i want to remove from my backing bean, the choice 3 and choice 4
if the status is 2:
- Choice 1
- Choice 2
- Choice 3
So in this case, i want to remove choice 4...
I need to do that from a bean.

Database access from flex thro java objects

Please tell me how to access the data from the MS SQL server
through a java object and connect it to flex and display the data
in flex.
please provide me the code for this assignment.
Thanks in Advance.
Selvakumar.

What would you consider when choosing between FDS and PHP
(via HTTP) for mySQL communication?
My app doesn't need to be real time but I am concerned about
the load on the webserver running PHP. Is that a typical point of
failure?

Java - object file access

how can I access randon to java object file
thanks

Can you clarify this question?
I'm going to give an initial answer, based on a guess as to what you meant:
BCEL lets you access the internals of a compiled Java class file (aka, the bytecode, aka the object code).

Accessing java objects from within javascript

Hello,
Anyone with an idea of a useful toolkit for accessing java objects from within javascript will be much appreciated.
Thanks in advance,
Antana.

What do you mean by accessing Java objects? Do you mean interacting with an applet via JavaScript? Something else?

Access Java object from Javascript

Hi
I'm trying to invoke a Java object from Javascript (scriptengine and all that).
I want to add scripting features to a GeneXus Java generated app... and I have very basic skills on java too. Sorry for that ;o).
This is the java code to pass "params" to the scriptengine:
engine.put("remoteHandle",remoteHandle);
engine.put("context", context); The remoteHandle (int) and context (com.genexus.ModelContext) pass trough all the gx-java generated programs.
This javascript works fine:
importClass(Packages.uftestjs);
new uftestjs(remoteHandle).execute( ) ;The remoteHandle conversion is ok (javascript-number to int). The context is optional.
But if I want to pass context:
importClass(Packages.uftestjs);
new uftestjs(remoteHandle, context).execute( ) ;Fails with this:
"javax.script.ScriptException: sun.org.mozilla.javascript.internal.EvaluatorException: Java constructor for 'uftestjs' with arguments 'number,javax.script.SimpleScriptContext' not found."
Obviously, no conversion is possible with context (javax.script.SimpleScriptContext to com.genexus.ModelContext).
There is some way to reference de original context, by the object Id??? or something like that???
Thanks in advance for any replies!!!
Greetings from Chile. (I hope you can understand my english!)

Hi
Well, since this topic is about java programming I think the place is right here.
(I use some tricks to embed java statements in genexus objects...)
I will try to get some help at Artech (GX) on how to build something... to get the conversion needed.
But they are not focussed on support this kind of questions.
Anyway, I want to know: do I can to reference an object by the objId?
I want to code something like this:
com.genexus.ModelContext context =
(com.genexus.ModelContex)getTheObjectFromTheJVM(theObjectId);(powered by google translator, ha!)

Java Object Cache have wired behaviour

HI,
I am trying to get my Oracle Java Object Cache working but I am observing some really stange behaviour which has stop it working. So any help will be really useful (10.1.3 and 10.1.2.0.2). I will explain:
Progammaticly I have setup a parent region call 'DatabaseDataCache' and a sub-region call 'country'. In this region I have defined my object call countriesDto' with a Attribuite that has a CaheLoader attached. In my cache loader I connects to a Entity EJB that loads a bunch of DTOs into the cache.
What is strange is that when i run the unit test on the code (cactus). The cache seems to call the cache loader 3 times consequtively before the EJB will load the data (i know this due to debuging messages)
Then in the actual implmentation I have the cache setup code of the in the init() of the servlet but again the cache loader doesn't seem to able to call the ejb it requires. Ones the cache is access it trys to call the cache loader and of course the ejb dosn't get called and is returning me a NullPointerError as I am trying to acces the local interface (in the cache loader). This is strange as in the cactus test it actually calls the ejb ok bit only on the third attemp.
I am abit puzzled with this so any help will be much appreciated.
Charlie

I think I have got what you need. The following is the cactus test class that test the getCountries method in my session ejb:
public class WebinUtilTest extends ServletTestCase {
private CacheAccess globParCache;
public void setUp() throws Exception {
CacheAccess.defineRegion("DatabaseDataCache");
globParCache = CacheAccess.getAccess("DatabaseDataCache");
globParCache.defineSubRegion("country");
Attributes cAtt = new Attributes();
cAtt.setLoader(new CountryCacheLoader());
CacheAccess globCountCache = globParCache.getSubRegion("country");
globCountCache.defineObject("countriesDto", cAtt);
globCountCache.preLoad("countriesDto");
globCountCache.close();
globParCache.close();
public void testGetCountries() throws Exception{
WebinUtilLocal wuLoc = HomeFactory.getWebinUtilLocalHome().create();
String[] countries = wuLoc.getCountries();
assertTrue(countries.length >0);
public void tearDown() throws Exception {
if (globParCache != null){
CacheAccess gCache = CacheAccess.getAccess("DatabaseDataCache");
gCache.destroy();
When I run this test here is the stack trace I am getting (in order):
06/01/05 15:54:14 load entred for country cache loader: Thu Jan 05 15:54:14 GMT 2006
06/01/05 15:54:14 java.lang.Exception: Stack trace
06/01/05 15:54:14 at java.lang.Thread.dumpStack(Thread.java:1064)
06/01/05 15:54:14 at uk.ac.ebi.submission.util.CountryCacheLoader.load(Unknown Source)
06/01/05 15:54:14 at oracle.ias.cache.CacheLoader.callLoad(Unknown Source)
06/01/05 15:54:14 at oracle.ias.cache.CacheHandle.findObject(Unknown Source)
06/01/05 15:54:14 at oracle.ias.cache.CacheHandle.asyncLoad(Unknown Source)
06/01/05 15:54:14 at oracle.ias.cache.Task.execute(Unknown Source)
06/01/05 15:54:14 at oracle.ias.cache.WorkerThread.run(Unknown Source)
06/01/05 15:54:14 WebinUtil Session Started: Thu Jan 05 15:54:14 GMT 2006
06/01/05 15:54:14 load entred for country cache loader Thu Jan 05 15:54:14 GMT 2006
06/01/05 15:54:14 java.lang.Exception: Stack trace
06/01/05 15:54:14 at java.lang.Thread.dumpStack(Thread.java:1064)
06/01/05 15:54:14 at uk.ac.ebi.submission.util.CountryCacheLoader.load(Unknown Source)
06/01/05 15:54:14 at oracle.ias.cache.CacheLoader.callLoad(Unknown Source)
06/01/05 15:54:14 at oracle.ias.cache.CacheHandle.findObject(Unknown Source)
06/01/05 15:54:14 at oracle.ias.cache.CacheHandle.locateObject(Unknown Source)
06/01/05 15:54:14 at oracle.ias.cache.CacheAccess.get(Unknown Source)
06/01/05 15:54:14 at uk.ac.ebi.submission.ejb.session.WebinUtilBean.getCountries(Unknown Source)
06/01/05 15:54:14 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
06/01/05 15:54:14 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
06/01/05 15:54:14 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
06/01/05 15:54:14 at java.lang.reflect.Method.invoke(Method.java:324)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.EJBJoinPointImpl.invoke(EJBJoinPointImpl.java:39)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:45)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:62)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:43)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.system.JAASInterceptor$1.run(JAASInterceptor.java:32)
06/01/05 15:54:14 at java.security.AccessController.doPrivileged(Native Method)
06/01/05 15:54:14 at javax.security.auth.Subject.doAs(Subject.java:379)
06/01/05 15:54:14 at com.evermind.server.ThreadState.runAs(ThreadState.java:637)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.system.JAASInterceptor.invoke(JAASInterceptor.java:36)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:43)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.system.TxRequiredInterceptor.invoke(TxRequiredInterceptor.java:56)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:43)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.system.SecurityRoleInterceptor.invoke(SecurityRoleInterceptor.java:46)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:43)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:62)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:43)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.system.RunningStateInterceptor.invoke(RunningStateInterceptor.java:28)
06/01/05 15:54:14 at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:43)
06/01/05 15:54:14 at com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:106)
06/01/05 15:54:14 at WebinUtilLocal_StatelessSessionBeanWrapper50.getCountries(WebinUtilLocal_StatelessSessionBeanWrapper50.java: 310)
06/01/05 15:54:14 at uk.ac.ebi.submission.cactus.session.WebinUtilTest.testGetCountries(Unknown Source)
06/01/05 15:54:14 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
06/01/05 15:54:14 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
06/01/05 15:54:14 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
06/01/05 15:54:14 at java.lang.reflect.Method.invoke(Method.java:324)
06/01/05 15:54:14 at junit.framework.TestCase.runTest(TestCase.java:154)
06/01/05 15:54:14 at junit.framework.TestCase.runBare(TestCase.java:127)
06/01/05 15:54:14 at org.apache.cactus.internal.AbstractCactusTestCase.runBareServer(AbstractCactusTestCase.java:153)
06/01/05 15:54:14 at org.apache.cactus.internal.server.AbstractWebTestCaller.doTest(AbstractWebTestCaller.java:119)
06/01/05 15:54:14 at org.apache.cactus.internal.server.AbstractWebTestController.handleRequest_aroundBody0(AbstractWebTestControl ler.java:93)
06/01/05 15:54:14 at org.apache.cactus.internal.server.AbstractWebTestController.handleRequest_aroundBody1$advice(AbstractWebTest Controller.java:224)
06/01/05 15:54:14 at org.apache.cactus.internal.server.AbstractWebTestController.handleRequest(AbstractWebTestController.java)
06/01/05 15:54:14 at org.apache.cactus.server.ServletTestRedirector.doPost_aroundBody2(ServletTestRedirector.java:101)
06/01/05 15:54:14 at org.apache.cactus.server.ServletTestRedirector.doPost_aroundBody3$advice(ServletTestRedirector.java:224)
06/01/05 15:54:14 at org.apache.cactus.server.ServletTestRedirector.doPost(ServletTestRedirector.java)
06/01/05 15:54:14 at org.apache.cactus.server.ServletTestRedirector.doGet_aroundBody0(ServletTestRedirector.java:72)
06/01/05 15:54:14 at org.apache.cactus.server.ServletTestRedirector.doGet_aroundBody1$advice(ServletTestRedirector.java:224)
06/01/05 15:54:14 at org.apache.cactus.server.ServletTestRedirector.doGet(ServletTestRedirector.java)
06/01/05 15:54:14 at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
06/01/05 15:54:14 at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
06/01/05 15:54:14 at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
06/01/05 15:54:14 at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:382)
06/01/05 15:54:14 at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:701)
06/01/05 15:54:14 at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:397)
06/01/05 15:54:14 at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:833)
06/01/05 15:54:14 at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:430)
06/01/05 15:54:14 at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:216)
06/01/05 15:54:14 at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:119)
06/01/05 15:54:14 at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
06/01/05 15:54:14 at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:215)
06/01/05 15:54:14 at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:232)
06/01/05 15:54:14 at oracle.oc4j.network.ServerSocketAcceptHandler.access$1000(ServerSocketAcceptHandler.java:35)
06/01/05 15:54:14 at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:819)
06/01/05 15:54:14 at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
06/01/05 15:54:14 at java.lang.Thread.run(Thread.java:534)
Hope this is enough information.
Thanks
Charlie

Problem with Dynamically accessing EJB Class objects in WL 7.0 SP1

I am trying to build a component which has the ability to instantiate and execute
an known EJB method on the fly.
I have managed to build the component but when I try and execute it I get a ClassNotFoundException.
I know that the EJB I am trying to invoke is deployed and available on the server,
as I can see it in the console, I also seen to have been able to get the remote
interface of the object, my problem occurs when I try and access the class object
so I can perform a create on the object and then execute my method
The code I have written is below:
private Object getRemoteObject(Context pCtx, String pJNDIName, String pHomeBean)
throws Exception {
     String homeCreate = "create";
     Class []homeCreateParam = { };
     Object []homeCreateParamValues = {};
try {
//This call seems to work and doesn't throw an exception
Object home = pCtx.lookup(pJNDIName);
//However this call throws a java.lang.ClassNotFoundException
Class homeBean = Class.forName(pHomeBean);
Method homeCreateMethod = homeBean.getMethod(homeCreate,homeCreateParam);
return homeCreateMethod.invoke(home, homeCreateParamValues);
} catch (NamingException ne) {
logStandardErrorMessage("The client was unable to lookup the EJBHome.
Please make sure ");
logStandardErrorMessage("that you have deployed the ejb with the JNDI
name "+pJNDIName+" on the WebLogic server ");
throw ne;
} catch (Exception e) {
logStandardErrorMessage(e.toString());
throw e;
Any advice would be really appreciated, I'm fast running out of ideas, I suspect
it has something to do with the class loader but I'm not sure how to resolve it
Regards
Jo Corless

Hello Joanne,
Congratulations! I'm very happy that you've managed to fix your problem. It's
always essential to understand how to package applications when deploying on BEA
WebLogic. Usually, by throwing everything into an EAR file solves just about all
the class loader problems. :-) Let us know if you have any further problems that
we can assist you with.
Best regards,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
"Joanne Corless" <[email protected]> wrote:
>
>
I've fixed it!!!!!!!!
Thanks to everyone who gave me help!!!!
The class loader was the culprit which is what I suspected all along.
As soon
as I put the 2 jar files I was using into an EAR file the problem went
away!!!!!
Thanks again
Jo Corless
"Ryan LeCompte" <[email protected]> wrote:
Hello Joanne,
As Mr. Woollen mentioned, I also believe it's a problem with the class
loader.
You need to be careful how you arrange your EJBs, because WebLogic has
a specific
method in which it loads classes in an EAR, JAR, and WAR file(s). Please
refer
to http://dev2dev.bea.com/articles/musser.jsp for more information about
BEA WebLogic
class loading mechanisms and caveats. Also, try printing out the various
methods
that are available on the object that was returned to you via reflection.
For
example, use the getMethods() method, which returns an array of Method
objects
that you can subsequently cycle through and print out the various method
names.
This way you can discover if the class found/returned to you is indeed
the one
you intend to locate.
Hope this helps,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
Rob Woollen <[email protected]> wrote:
I believe the issue is the home interface class for this EJB is not
available in the class loader which is doing the reflection.
If you do:
getClass().getClassLoader().loadClass(homeInterfaceClassName)
I suspect it will fail. Reflection still requires that the class be
loadable.
-- Rob
Joanne Corless wrote:
Hi Slava,
If I make my code look like you describe below I get a compliationerror telling
me that
home.getMethod() is not recognised (no such method)
If I change it slightly and use
Method homeCreateMethod =
home.getClass().getMethod(homeCreate,homeCreateParam);
The code will compile OK but when executed it still throws a NoSuchMethodException
Any ideas ?
Thanks for your help so far
Regards
Jo Corless
Your code should look like
Object home = pCtx.lookup(pJNDIName);
Method homeCreateMethod =
home.getMethod(homeCreate,homeCreateParam);
return homeCreateMethod.invoke(home, homeCreateParamValues);
Regards,
Slava Imeshev
"Joanne Corless" <[email protected]> wrote in message
news:[email protected]...
Hi Ryan,
I also wanted to mention that if you do a "header search" in this
particular
newsgroup
with the search query as "reflection", you will see many previousmessages
regarding
reflection and EJBs. I believe you could learn a lot from thedifficulties
that
others have faced and solved.I tried that and although there was a number of similar cases noneof them
actually
seem to fix my issue. Thanks for the suggestion though
Are the EJBs that you are trying to access accessible via your
system
classpath?
Try to avoid having them accessible via the main system classpath,and
only bundle
them in your appropriate EJB jar files (contained in an EAR file,for
example).Maybe I should have laid the problem out a little clearer.
I have a number of EJB's bundled up in a JAR file which is hot deployedto
the
server. Within this first JAR file is an EJB (SSB) component that
needs
to
be
able to invoke a known method on another EJB. This second EJB may
or
may
not be
within the first JAR file but it also will be hot deployed.
The component trying to invoke the method on the 2nd EJB has to
be
able to
create
an instance of the 2nd EJB without actually knowing anything bar
a
JNDI
Name which
is passed in at runtime.
I can get as far as doing the
Object home = pCtx.lookup(pJNDIName);
This returned a class with the name
"com.csc.edc.projects.allders.httppostoffice.postman.PostmanBean_mp8qy2_Home
Impl_WLStub"
My problem seems to occur when I try and invoke the create method
Method homeCreate = home.getClass().getMethod("create", new Class[0]);
My code throws a java.lang.NoSuchMethodException at this point so
I
am
unable
to progress to the next step of :
Object bean = homeCreate.invoke(home, null);
So I can return the instantiated bean back to the calling client.
Why am I getting the NoSuchMethodException, is is because I am gettinga
stub
back rather than the home interface and if so how do I get the truehome
interface
from the bean
Thanks in advance
Jo Corless

Accessing local Java objects

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