Replacement of PayloadUUID.getPayLoad() method

[prateekjainaa]

Hi All,
I am trying to migrate an application that uses jgroups 3.x to latest version. I found that class org.jgroups.util.PayloadUUID has been removed and org.jgroups.util.ExtendedUUID should be used instead. Our application uses getPayLoad() method from PayloadUUID class and I cannot find its replacement in ExtendedUUID.java.
Although, I looked at old code from PayloadUUID and tried to come up with something like this

String PAYLOAD = "payload";
        if (uuidAddress.keyExists(PAYLOAD)) {
  // ... do something here.
}

I want to know, if this is the correct replacement for

    if (payloaduuidAddress.getPayload() != null) {
    // ... do something here.
}

Regards,
///

[belaban]

Yes, this would work, but it is very inefficient. I suggest change the key to a byte array:

final byte[] key=Util.stringToBytes(PAYLOAD);
if(payloaduuidAddress.keyExists(key)) {
   // .. do something here
}

Note that the get() method iterates through all keys. If you have many keys, this linear cost will decrease performance. You could create your own subclass of FlagsUUID, e.g. by copying ExtendedUUID and replacing keys and values with a ConcurrentHashmap.

[prateekjainaa]

Thanks for confirming @belaban