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I'm writing a Java CORBA client, which uses the Visibroker ORB. I'm using the following code to check if a remote object reference is still valid:
I added the try-catch, because _non_existent() was throwing a NullPointerException. The evidence was provided by the following stack trace I found in my logs:
Caused by: java.lang.NullPointerException at com.inprise.vbroker.orb.ORB.getThreadLocalObject(Unknown Source) at com.inprise.vbroker.qos.PolicyHelper.get_client_policy(Unknown Source) at com.inprise.vbroker.orb.DelegateImpl.get_policy(Unknown Source) at org.omg.CORBA.portable.ObjectImpl._get_policy(ObjectImpl.java:310) at com.inprise.vbroker.GIOP.ProtocolConnector.doServiceContext(Unknown Source) at com.inprise.vbroker.GIOP.ProtocolConnector.doServiceContext(Unknown Source) at com.inprise.vbroker.IIOP.ProtocolConnector.doServiceContext(Unknown Source) at com.inprise.vbroker.GIOP.ProtocolConnector.request(Unknown Source) at com.inprise.vbroker.GIOP.ProtocolConnector.pseudoRequest(Unknown Source) at com.inprise.vbroker.GIOP.ProtocolConnector.non_existent(Unknown Source) at com.inprise.vbroker.orb.DelegateImpl.non_existent(Unknown Source) at org.omg.CORBA.portable.ObjectImpl._non_existent(ObjectImpl.java:137) at com.acecomm.parentpatrol.surePay.SurePaySession.refreshSessionIfNecessary(SurePaySession.java:335)
Anyway, my question is this.....is there a better way to check whether a remote object reference is still valid? Preferably, one which doesn't throw any runtime exceptions
Thanks in Advance, DM [ January 18, 2007: Message edited by: Dan Murphy ]