// validate base property //
if(!statement.getObject().isLiteral()) {
if(!ModelException.throwException(ModelException.NUMERICTRANSFORMER,
"base property of NumericTransformer resource:"+
resource.getURI()+" is not a literal")) {
throw new DiscardException("");
}
} else {
return statement.getObject().asLiteral().getDouble();
//return Double.parseDouble(statement.getObject().toString());
}