public static FilterDefinition <T> HandleQueryUnitModel <T>(QueryUnit queryUnit)
{
if (queryUnit == null)
{
throw new ArgumentNullException("queryUnit");
}
if (queryUnit.Factors == null || !queryUnit.Factors.Any())
{
throw new ArgumentException("queryUnit.Factors至少包含一项");
}
List <FilterDefinition <T> > factorFilters = new List <FilterDefinition <T> >();
foreach (var factorItem in queryUnit.Factors)
{
if (factorItem.ValueOperators == null || !factorItem.ValueOperators.Any())
{
continue;
}
List <FilterDefinition <T> > minFilters = new List <FilterDefinition <T> >();
foreach (var minItem in factorItem.ValueOperators)
{
minFilters.Add(ToMogodbFilter <T>(minItem.QueryOperator, factorItem.Key, minItem.Value));
}
if (minFilters.Count == 1)
{
factorFilters.Add(minFilters[0]);
}
else
{
factorFilters.Add(Builders <T> .Filter.And(minFilters));
}
}
if (!factorFilters.Any())
{
return(Builders <T> .Filter.Empty);
}
if (!string.IsNullOrEmpty(queryUnit.ElemMatchName))
{
return(Builders <T> .Filter.ElemMatch(queryUnit.ElemMatchName, Builders <T> .Filter.And(factorFilters)));
}
return(HandleFilterDefinitions(factorFilters, queryUnit.LogicalOperator));
}
IUrlProvider IUrlProvider.SetUnit(QueryUnit Unit)
{
const string queryIdentifier = "units=";
string queryParameter = string.Empty;
switch (Unit)
{
case QueryUnit.Imperial:
queryParameter = "imperial";
break;
case QueryUnit.Metric:
queryParameter = "metric";
break;
case QueryUnit.Kelvin:
return(this);
}
AppendQuery(string.Concat(queryIdentifier, queryParameter));
return(this);
}
