[ openjms-Bugs-673993 ] class IntravmSessionStub does not accept null messages.

Bugs item #673993, was opened at 2003-01-24 13:12
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=474136&aid=673993&group_id=54559

Category: client
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Raicho Minev (raicho)
Assigned to: Jim Alateras (jalateras)
Summary: class IntravmSessionStub does not accept null messages.

Initial Comment:

I am using embedded JMS server and intravm jndi for 
connecting.

The problem occurs when the JmsServerSession class 
tries to send a "ping" like isClientEndpointActive() 
request, because it sends a null message. A null pointer 
exception is then thrown by the onMessage method, 
when it tries to clone the message object for the intravm 
client:

public void onMessage(Message message) 
{
...
  try {
     copy = (Message) ((MessageImpl) message).clone();
  } catch (CloneNotSupportedException exception) {
   getLogger().logException(exception);
  }
...
}

I suggest surrounding the clone operation with a "not 
null" check:

public void onMessage(Message message) 
{
...
 if(message != null) {
    try {
     copy = (Message) ((MessageImpl) message).clone ();
    } catch (CloneNotSupportedException exception) {
     getLogger().logException(exception);
    }
 }
...
}

The following methods also clone messages and do not 
check for nulls and will probably have similar porblems:
sendMessage()
receiveMessages()
onMessages()

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