Creates an new
xPDOQuery for a specified
xPDOQuery newQuery (string $class, [mixed $criteria = null], [boolean|integer $cacheFlag = true])
Valid Class The string you pass as the class name should be a valid object class name. It'll be the same name you use moments later with your call to getObject, getObjectGraph, getCollection, or getCollectionGraph.
Create a new Query for the Box object:
Create a new Query for the Box object, but already add a WHERE clause limiting to Boxes with width greater than 10:
$xpdo->newQuery('Box',array( 'width:>' => 10, ));