/// <summary>
/// This method converts a document expression to a value for matching
/// </summary>
/// <param name="document"></param>
/// <param name="valueExpression"></param>
/// <returns></returns>
public static string GetBsonElementNameFromDocument(TDocumentObject document,
Expression <Func <TDocumentObject, TDocumentKeyType> > valueExpression)
{
// Localize the member expression
MemberExpression memberExpression = (MemberExpression)valueExpression.Body;
// Make sure we have a member expression
if (memberExpression != null)
{
// Localize the property information
PropertyInfo property = (memberExpression.Member as PropertyInfo);
// Make sure we have property information and set the value
if (property != null)
{
// Localize our BSON element
BsonElementAttribute bsonElement =
(BsonElementAttribute)property.GetCustomAttributes(typeof(BsonElementAttribute), true)
.FirstOrDefault();
// Check to see if we have a BSON element
if (bsonElement != null)
{
return(bsonElement.ElementName);
}
}
}
// We're done, return the default value
return(null);
}
/// <summary>
/// Gets the property depending on the BSON property name
/// </summary>
/// <returns>
/// The PropertyInfo object if the property under the given name exists,
/// NULL otherwise
/// </returns>
public static PropertyInfo GetPropertyFromBSONName(this Type type, string bsonPropertyName)
{
PropertyInfo[] properties = type.GetTypeInfo().GetProperties(BindingFlags.Public
| BindingFlags.Instance);
return(properties.Where(p =>
{
BsonElementAttribute bsonElementAttribute = p.GetCustomAttribute <BsonElementAttribute>();
if (bsonElementAttribute != null)
{
return bsonElementAttribute.ElementName == bsonPropertyName;
}
return false;
}).FirstOrDefault());
}
public List <Book> ListByFeatures(Book b, string orderBy)
{
//örnek orderBy değeri => title:1 ise title'a göre asc uygular title:-1 ise title'a göre desc uygular.
Dictionary <string, object> features = new Dictionary <string, object>();
foreach (PropertyInfo propertyInfo in b.GetType().GetProperties())
{
if (propertyInfo.GetValue(b) != null && propertyInfo.GetValue(b).ToString() != "-1" &&
propertyInfo.GetValue(b).ToString() != "1.01.0001 00:00:00")
{
object[] attrs = propertyInfo.GetCustomAttributes(true);
BsonElementAttribute be = (BsonElementAttribute)attrs[0];
features.Add(be.ElementName, propertyInfo.GetValue(b));
}
}
if (orderBy != null && orderBy.Split(":").Length == 2)
{
return(BookCollection.Find(new BsonDocument(features)).Sort("{" + orderBy + "}").ToList());
}
return(BookCollection.Find(new BsonDocument(features)).ToList());
}
