InitialContext - don't understand how to set this from an app not hosted by appserver

[marc dauncey]

Hello everyone,

I know this is a common question because I've searched the forum and read through peoples problems and solutions, but I'm still not understanding, and I wondered if I could get some advice.

I have an application client in the form of standalone java classes which calls a remote EJB on a WAS server. I understand i can make a JNDI call to a server and port and I know I have to set the InitialContext, but I don't know what i should set it to.

Lots of people seem to suggest "org.jnp.interfaces.NamingContextFactory" but I'm not sure if this is something appserver specific like JBoss.

What would people advise?

Many thanks


Marc

[marc dauncey]

Ok, answering my own question here - worked out that the app needs to run as an application client (rather than invoking main(string[] args) like a normal java app.

Just noticed the mindboggling jvm options i am going to need - this is going to cause me a big problem since my code will be running inside of another java application (IBM extended search) - don't have control of the jvm and really not sure how i am going to get round this.

The fact that you need all this stuff just to make a jndi call and get back an ejb strikes me as tight coupling. Or have I misunderstood?

[Jesus Angeles]

can you show the look up code? i have same problem

[marc dauncey]

I've now successfully got an ejb lookup working in a POJO without running it as an application client.

Basically for WAS, you need the following JARs on your project classpath:

wssec.jar
naming.jar
namingclient.jar
lmproxy.jar
sas.jar
ecutils.jar

you also need a reference to a folder containing this file:
implfactory.properties

i then did the following JNDI lookup:

 
public JNDILookupTest(){
Hashtable properties = new Hashtable();
properties.put(Context.INITIAL_CONTEXT_FACTORY, "com.ibm.websphere.naming.WsnInitialContextFactory");
properties.put(Context.PROVIDER_URL, "iiop://dhsrvskh819.doh.gov.uk:2809/");

InitialContext ctx;
try {
ctx = new InitialContext(properties);
Object ref = ctx.lookup( "ejb/uk/gov/dh/portal/components/business/search/chip/ejb/CHIPSearchEJBv2Home" );

CHIPSearchEJBv2Home chipHome = ( CHIPSearchEJBv2Home ) 
javax.rmi.PortableRemoteObject.narrow( ref, CHIPSearchEJBv2Home.class );
chipSearch = chipHome.create();

CHIPResultDTOCollection results = chipSearch.search("progress");

Iterator i = results.getResults();
while(i.hasNext()){
CHIPResultDTO curr = (CHIPResultDTO)i.next();
System.out.println(curr.getDocHeading());
}



System.out.println("Complete");

} catch (NamingException e) {
e.printStackTrace();
} catch (RemoteException e) {
e.printStackTrace();
} catch (CreateException e) {
e.printStackTrace();
}
 

It works fine, just got to get this working in Extended Search now, which is a bigger challenge!

Marc