PredicateBuilder failing to build correct expression

[RehanSaeed]

I'm trying to use the PredicateBuilder to do an 'Or' in my where clause like so:

var predicate = PredicateBuilder.New<MyItem>();
foreach (var item in items)
{
    predicate = predicate.Or(x => x.Prop1 == item.Prop1 && x.Prop2 == item.Prop2);
}

var result = await this.ApplicationDbContext
    .Items
    .Where(predicate.DefaultExpression)
    .ToListAsync(cancellationToken);

This executes the SQL:

SELECT [f].[Prop1], [f].[Prop2]
FROM [foo].[MyItem] AS [f]
WHERE 0 = 1

Here is what MyItem looks like, it has nullable properties:

public class MyItem
{
    int? Prop1 { get; set; }
    int? Prop2 { get; set; }
}

The expression does not seem to be built properly and no 'Or' clauses get added. Are nullable types supported?