Using Java with Uniobjects for Java to call a UniBasic routine. The
UniBasic routine has two parameters; part number and result (html code).
As long as it is passed a valid part number, it works OK. However, when
the part number is not valid it returns an empty string RESULT = '' (two
single quotes).
The Java class method checks for an empty string and returns null if it
finds one
*******************************
OpenU2Session();
UniSubroutine uSub = uSession.subroutine("GetInventoryStatus", 2);
uSub.setArg(0, partnum);
uSub.call();
result = uSub.getArg(1);
CloseU2Session();
if(result == "") {
return null;
} else {
return result;
}
********************************
The php action that calls the class method checks for null and behaves
accordingly.
********************************
$result = $U2->GetInventoryStatus($partnumber);
if($result) {
echo $result;
} else {
echo "No information found for " + $partnumber;
}
********************************
The problem is that when the Java routine checks the result from the
UniBasic sub, it doesn't seem to see the empty string as an empty string.
Does anyone know what is happening here? Is there a better way to
indicate an empty string
Charles Shaffer
Senior Analyst
NTN-Bower Corporation
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