perfSONAR User Q&A and Other Discussion

["Weiping Mandrawa" <>]

Hello,  I am trying to understand lookup service based on the address

http://psps.perfsonar.net/client-doc.html 


In the paragraph

The instance in the above example is the URL of an LS service to contact. 
Examples
1. Find all SNMP Measurement Archives


There are examples how to crate XQuery to be sent to home lookup services

In the example code (XQuery to be sent up to home lookup based on Find all 
SNMP Measurement Archieves)


(Line1) if($hLSResult->{response} && $hLSResult->{response} =~ /^new();
(Line2)            my $hLSDoc = 
$resParser->parse_string($hLSResult->{response});



For some reason, perl can't understand (Line1) to (Line2)

for example

in Line2 , it is using $resParser but $resParser is not declared anywhere in 
the code
and when I run the code, it complains about it



if I change $resParser to $parser, it complains that

Thread 65 terminated abnormally: Can't call method "parse_string" on 
unblessed reference


Thank you