private static void Main(string[] args)
{
var entries = new List <Entry>
{
new Entry("Title 1", 1, new SubEntry("SubTitle 1", 1)),
new Entry("Title 2", 2, new SubEntry("SubTitle 2", 2))
};
//Expression<Func<Entry, object>> expr = DynamicExpressions.GetPropertyGetter<Entry>("SubEntry.Title");
//var result = entries.AsQueryable().OrderByDescending(expr).ToList();
//var expr = DynamicExpressions.GetPredicate<Entry>("SubEntry.Title", FilterOperator.Equals, "SubTitle 2");
//var entry = entries.AsQueryable().Where(expr).ToList();
//var predicate = DynamicFilterBuilder<Entry>
// .StartWith("Title", FilterOperator.Equals, "Title 1")
// .And("Number", FilterOperator.Equals, 2)
// .Build();
//var entry = entries.AsQueryable().FirstOrDefault(predicate);
Func <Entry, bool> x = e => (e.Title.EndsWith("1") && e.Number == 1) || (e.Title.EndsWith("2") && e.Number == 2);
var predicate = new DynamicFilterBuilder <Entry>()
.And("Title", FilterOperator.Contains, "Title")
.Or(b => b.And("Title", FilterOperator.EndsWith, "1").And("Number", FilterOperator.Equals, 1))
.Or(b => b.And("Title", FilterOperator.EndsWith, "2").And("Number", FilterOperator.Equals, 2))
.Build();
var e = entries.AsQueryable().Where(predicate).ToList();
BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args);
}
public List <Entry> GeneratedLambda()
{
var predicate = new DynamicFilterBuilder <Entry>()
.And("Title", FilterOperator.Contains, "Title")
.Or(b => b.And("Title", FilterOperator.EndsWith, "1").And("Number", FilterOperator.Equals, 1))
.Or(b => b.And("Title", FilterOperator.EndsWith, "2").And("Number", FilterOperator.Equals, 2))
.Build();
return(_entries.AsQueryable().Where(predicate).ToList());
}
