FW: Bean to remote bean communication... (2nd try)
I originally posted this at elephantwalker but have had little response, hopefully someone here has some ideas... I'm trying to lookup a bean on a remote machine. I set up initial context in usual way using properties taken from the jndi.properties on the remote oc4j server. In fact I want to lookup the bean from within a web-app (or ejb) installed on a local oc4j server. When I attempt it all I get is NullPointerException: domain was null. Does anyone know what this means? Some more info: I do the lookup programmatically. If I run it as a standalone client (not what I want to do) I get an error telling me the Factory can't find application-client.xml - this is not surprising as it's not on my classpath. Running from local container gives the error above. I have added an entry to orion-application.xml: ejb-module remote=true path=myremoteapp-ejb / and entries for the beans deployed there into my local oc4j servers' application-client.xml Here's the code I'm using to do the lookup: Hashtable env = new Hashtable(); env.put(java.naming.provider.url, ormi://remotemachineIP:rmiport/myremoteapp); env.put (java.naming.factory.initial, com.evermind.server.ApplicationClientInitialContextFactory); env.put(java.naming.security.principal, myremoteapp); env.put(java.naming.security.credentials, password); targetEJB_URI = java:comp/env/ + targetEJB_URI; EJBHome ejbRef = null; Context ic = new InitialContext(env); //ejbRef = (EJBHome)PortableRemoteObject.narrow(ic.lookupLink (targetEJB_URI), EJBHome.class); ejbRef = (EJBHome) ic.lookupLink (targetEJB_URI); One other thing is if I use the RMIInitialContextFactory instead then the context lookup works if I'm running as a standalone client. I then only get a naming exception since it can't see application-client.xml Any help appreciated. Thanks, Chris.
When to use java.util.Collection or java.util.Set
Hi everybody I noticed in the EJB 2.0 specification that most of the examples use java.util.Collection when defining a relationship between two entities, even though java.util.Set is also allowed. Why is that so? I would expect java.util.Set to be the most frequently used type, since in general you would not want duplicates in a relationship. Think of a Person-owns-Car relationship for instance you are not interested in any duplicates here, since a Person cannot own the same car twice so to speak (if one relationship says that person P is the owner of car C, it does not provide you with any usefull information to create yet another relationship between P and C). Which cmr-field-types do you use and why? Randahl
how do I setup a datasource for mssql ?
Subject: how do I setup a datasource for mssql 1 2 3 4 5 6 7 8 9 From: alt.cybercafes [EMAIL PROTECTED] === I have tried setting up my the datasource like the following data-source class=com.evermind.sql.DriverManagerDataSource name=Billing schema=database-schemas/ms-sql.xml location=jdbc/Billing xa-location=jdbc/Billing ejb-location=jdbc/Billing url=com.microsoft.jdbc.sqlserver.SQLServerDriver connection-driver=jdbc:microsoft:sqlserver://myserver:1433;DatabaseName=Bil ling username=applesauce password=1234 inactivity-timeout=30 / and I get the following errors Error initializing data-source 'jdbc/Billing': DriverManagerDataSource driver 'jdbc:microsoft:sqlser ver://Appserver1:1433;DatabaseName=Billing' not found What am I doing wrong? thanks
Unknown Source
Hi Guys, I am having a problem with v1.5.4 of Orion. In stack traces it displays the line number everywhere except for the EJB's! I know it used to work, any ideas on what to look for?
RE: When to use java.util.Collection or java.util.Set
What if Person P steals car C? If I were the police I would want to know he stole it three times. :-) Although in most cases I would tend toward a Set before collections, Logging is one of the areas where P C being the key could exist multiple times and I would want the information. I would hope that you datasource would not have duplicate records in it anyway. :-) -Original Message-From: Randahl Fink Isaksen [mailto:[EMAIL PROTECTED]]Sent: Tuesday, April 16, 2002 9:12 AMTo: Orion-InterestSubject: When to use java.util.Collection or java.util.Set Hi everybody I noticed in the EJB 2.0 specification that most of the examples use java.util.Collection when defining a relationship between two entities, even though java.util.Set is also allowed. Why is that so? I would expect java.util.Set to be the most frequently used type, since in general you would not want duplicates in a relationship. Think of a Person-owns-Car relationship for instance - you are not interested in any duplicates here, since a Person cannot own the same car twice so to speak (if one relationship says that person P is the owner of car C, it does not provide you with any usefull information to create yet another relationship between P and C). Which cmr-field-types do you use and why? Randahl
could somebody help me pls
Hi, I have a database on firebird interbase and respectively a jsp file with a bean file . The bean must be the connection to the database, but I receive an error like in attached file: Know somebody why ?? __ Do you want a free e-mail for life ? Get it at http://www.clujnapoca.ro/ eroare.zip Description: Zip compressed data
JNDI Reference to home of EJB failing?
Attempting to get a reference to the home of a bean. Context is setup as follows: Hashtable env = new Hashtable(); env.put(Context.INITIAL_CONTEXT_FACTORY, com.evermind.server.rmi.RMIInitialContextFactory); env.put(Context.SECURITY_PRINCIPAL, admin); env.put(Context.SECURITY_CREDENTIALS, admin); env.put(Context.PROVIDER_URL, ormi://kecooper-lap:23792/Stateless1); Context ctx = new InitialContext(env); Doing a lookup as per the following: Stateless1Home stateless1Home = (Stateless1Home)ctx.lookup(Stateless1); All works well - no issues. Problem is converting above lookup to a lookup of the following type: Object homeObject = ctx.lookup(java:comp/env/Stateless1); The subsequent step would be to narrow the homeObject reference. However I cannot get the reference. Using Oracles JDeveloper9i I get the following error message: javax.naming.NameNotFoundException: java:comp/env/Stateless1 not found Need some help in determining hyow to fix this problem. I have modified several xml files, in particular ejb-jar.xml and orion-ejb-jar.xml to no avail. PLEASE let me know a possible solution as soon as possible. THANKS - Ken Cooper -- Kenneth Cooper, Jr.[EMAIL PROTECTED] -- _ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx
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