public static Criterion From <T>(Expression <Func <T, bool> > criterion) where T : IEntity
{
if (criterion == null)
{
throw new ArgumentNullException(nameof(criterion));
}
var methodCallExpression = criterion.Body as MethodCallExpression;
if (methodCallExpression != null)
{
return(From(methodCallExpression));
}
var binaryExpression = criterion.Body as BinaryExpression;
if (binaryExpression != null)
{
return(From(binaryExpression));
}
return(CriteriaExtractor <T> .CreateCriterion(criterion.Body));
}
static Criterion CreateByExpression <T>(Expression expression) where T : IEntity => CriteriaExtractor <T> .CreateCriterion(expression);