Dear all,
I am using XML::LibXML::Reader to parse large XML files and I am trying to use some methods based on XPATH.
There is something (probably simple) that I don't understand.
For instance, I create a pattern 
 
my $reader = new XML::LibXML::Reader(location => $xmlfile) or die "can
+not read $xmlfile\n";
while ($reader->read) {
   my $pattern = XML::LibXML::Pattern->new('//entry');
   $reader ->nextPatternMatch($pattern);
}

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there is no match although many entry tags are in the xml file (same behaviour for any tag).
the first node of the XML file contains information about schema 
<uniprot xmlns="http://uniprot.org/uniprot" xmlns:xsi="http://www.w3.o
+rg/2001/XMLSchema-instance" xsi:schemaLocation="http://uniprot.org/un
+iprot http://www.uniprot.org/support/docs/uniprot.xsd">

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if I replace it by only <uniprot> all my xpath queries work. I guess I have to do something to declare the schema, but the tags do not have any prefix like examples in the documentation
I don't know what to do. Any advice would be welcome.
thanks

In reply to XML::LibXML::Reader and XPATH by mat21

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