[Rdfapi-php-interest] Can not execute rdqlQuery twice in the same script

[Olivier C. <ocu...@sw...>]

Hi,
 
I can not query a model twice in the same script.
For example:
 
$myDBStore = new  DbStore ('MySQL', '127.0.0.1', 'essai', 'root', '');
$myModel = $myDBStore->getModel('astronomy');
$query1 = 'SELECT * WHERE (?x,<rdfs:subclassof>,?y)';
$result1 = $myModel->rdqlQuery($query1);
// Do something with $result1...
$query2 = 'SELECT * WHERE (?x,<rdf:type>,?y)';
$result2 = $myModel->rdqlQuery($query2);
// Do something with $result2...
 
I've got a correct answer with $result1.
$result2 returns the correct number of rows but each row is empty:
    [0] => Array
        (
            [?x] => literal Object
                (
                    [label] =>
                    [lang] =>
                    [dtype] =>
                )
            [?y] => literal Object
                (
                    [label] =>
                    [lang] =>
                    [dtype] =>
                )
        )
    [1] => Array
        (
            [?x] => literal Object
                (
                    [label] =>
                    [lang] =>
                    [dtype] =>
                )
            [?y] => literal Object
                (
                    [label] =>
                    [lang] =>
                    [dtype] =>
                )
        )
 ...
 
The problem will occurs even if I try to execute query2 fist then query1: I
will have an empty set of rows for $result1.
Do you have any idea?
 
Thank you for your help,
Olivier