private static Expression <Func <TModel, bool> > ToDateTimeOffsetValueExpression <TModel>(FilterItemModel filterItem, bool isNullable)
where TModel : class
{
var nullableFilterValue = DateTimeOffsetHelper.ToDateTimeOffsetOrNull(filterItem.Value);
if (!nullableFilterValue.HasValue || DateTimeOffsetHelper.DateTimeOffsetIsNullOrEmpty(nullableFilterValue))
{
throw new ArgumentException($"{filterItem.Value} is not of type {typeof(DateTimeOffset)}.");
}
var filterValue = nullableFilterValue.Value;
if (isNullable)
{
var entityParamSelector = ReflectionHelper.MemberSelector <TModel, DateTimeOffset?>(filterItem.Column);
if (filterItem.Filter == FilterType.In)
{
var result = filterItem.CollectionExpression(entityParamSelector, DateTimeOffsetHelper.ToDateTimeOffsetOrNull);
if (result != null)
{
return(result);
}
}
var expression = FilterExpressionHelper.GetNullableExpression(filterItem.Filter, filterValue);
return(entityParamSelector.CombineSelectorParamExpression(expression));
}
else
{
var entityParamSelector = ReflectionHelper.MemberSelector <TModel, DateTimeOffset>(filterItem.Column);
if (filterItem.Filter == FilterType.In)
{
var result = filterItem.CollectionExpression(entityParamSelector, DateTimeOffsetHelper.ToDateTimeOffset);
if (result != null)
{
return(result);
}
}
var expression = FilterExpressionHelper.GetExpression(filterItem.Filter, filterValue);
return(entityParamSelector.CombineSelectorParamExpression(expression));
}
}
public void DateTimeOffsetIsNullOrEmptyTest(object value, bool expected)
{
var actual = DateTimeOffsetHelper.DateTimeOffsetIsNullOrEmpty(value);
Assert.Equal(expected, actual);
}