Create an XmlContainer, define an equality string index
for booktitle elements, add a document, query the container
for the document, iterate over the result set displaying
the values returned.
EXPECTED RESULT:
book1 = Knowledge Discovery in Databases.
ACTUAL RESULT:
Knowledge Discovery in Databases.";
$container_name = 'test.dbxml';
unlink($container_name);
$mgr = new XmlManager(null);
$con = $mgr->createContainer("test.dbxml");
$con->addIndex("", "title", "node-element-equality-string");
$con->putDocument($book_name, $book_content);
$results = $mgr->query("collection('test.dbxml')//*[title='Knowledge Discovery in Databases.']");
$results->reset();
while($results->hasNext())
{
$val = $results->next();
$doc = $val->asDocument();
print $doc->getName()." = ".$val->asString()."\n";
}