FilterDefinition <T> GenerateFilterConditionByType(Type type, PropertySearchExpression propertyExpression)
{
if (type == typeof(bool) || type == typeof(bool?))
{
return(ToDocumentFilter(propertyExpression.Operator, propertyExpression.Property, Convert.ToBoolean(propertyExpression.Value)));
}
if (type == typeof(int) || type == typeof(int?))
{
return(ToDocumentFilter <int>(propertyExpression.Operator, propertyExpression.Property, Convert.ToInt32(propertyExpression.Value)));
}
if (type == typeof(DateTime) || type == typeof(DateTime?))
{
return(ToDocumentFilter(propertyExpression.Operator, propertyExpression.Property, DateTime.Parse(propertyExpression.Value)));
}
else
{
return(ToDocumentFilter(propertyExpression.Operator, propertyExpression.Property, propertyExpression.Value));
}
}
FilterDefinition <T> GetSearchQuery(SearchExpression searchExpression)
{
try
{
if (searchExpression == null)
{
return(FilterDefinition <T> .Empty);
}
if (searchExpression is PropertySearchExpression)
{
var builder = Builders <T> .Filter;
// This is necessary to match properties of the format ProcessITTOs.ITTOId.
//ProcessITTOs is the main property but MongoDB filter allows projection into properties of objects or arrays.
string property = (searchExpression as PropertySearchExpression).Property.Split('.')[0].Trim();
PropertyInfo info = typeof(T).GetProperties().FirstOrDefault(p => p.Name.Trim() == property);
if (info != null)
{
PropertySearchExpression propertySearchExpression = searchExpression as PropertySearchExpression;
propertySearchExpression.Property = propertySearchExpression.Property?.Trim().ToLower() == "id" ? "_id" : propertySearchExpression.Property;
return(GenerateFilterConditionByType(info.PropertyType, propertySearchExpression));
}
return(FilterDefinition <T> .Empty);
}
else
{
var expression = searchExpression as BinarySearchExpression <T>;
return(ToDocumentBinary(GetSearchQuery(expression.LeftSearch),
expression.BinaryOperator,
GetSearchQuery(expression.RightSearch)));
}
}
catch (Exception ex)
{
return(FilterDefinition <T> .Empty);
}
}
