* @see org.datanucleus.query.evaluator.memory.InvocationEvaluator#evaluate(org.datanucleus.query.expression.InvokeExpression, org.datanucleus.query.evaluator.memory.InMemoryExpressionEvaluator)
*/
public Object evaluate(InvokeExpression expr, Object invokedValue, InMemoryExpressionEvaluator eval)
{
// TODO Check whether first param is primary expression?
PrimaryExpression paramExpr = (PrimaryExpression)expr.getArguments().get(0);
Object value = eval.getValueForPrimaryExpression(paramExpr);
return JDOHelper.getVersion(value);
}