[Rdfapi-php-interest] Remove Quad bug

If I try and remove a quad with a literal object from a db dataset I get

Call to a member function qstr() on a non-object in /Users/rogerhyam/ 
Sites/trap/lib/rdfapi-php/api/model/DbModel.php on line 1042

As far as I can see this is because DatasetDb.php line 358 makes the  
following call

	// dynamic part of the sql statement
		$sql .= DbModel::_createDynSqlPart_SPO($quad->getSubject(), $quad- 
 >getPredicate(), $quad->getObject());

This is a static call to the private method on the DbModel.

where on line 1042

				$quotedLiteral = $this->dbConn->qstr($object->getLabel());

throws the wobbly because there is no dbConn. The dbConn is only  
initialized when a DbModel is created.

The call to the static method is not safe (probably why it is private).

This only breaks with literals and I suspect it has never been tested  
properly. There are several places where the same call is  made.

What is the status of this code? Am I doing something dumb? Is anyone  
working on it just now?

Thanks for your time on this,

Roger