public static int CalculateRowByteSize(List <PropertyInfo> infos, List <PropertyInfo> customInfos, List <PropertyInfo> primitiveInfos)
{
int total = 0;
foreach (PropertyInfo info in infos)
{
if (customInfos.Contains(info))
{
total += sizeof(int); //foreign key
}
else if (info.PropertyType == typeof(Boolean))
{
total += 1; //marshal 4 döndürüyor, yanlışsın marshal.
//dosyaya yazarken booleanlar 1 yer kaplıyor.
}
else if (info.PropertyType == typeof(String))
{
total += CustomAttr.GetLength(info) + delimiter.Length;
}
else if (info.PropertyType.IsGenericType)
{
continue;
}
else
{
total += System.Runtime.InteropServices.Marshal.SizeOf(info.PropertyType);
}
}
return(total);
}
/// <summary>
/// Writes a single property to the file. Used in Add method, iterating through all properties.
/// </summary>
/// <param name="bw">BinaryWriter that has been created before</param>
/// <param name="info">İnfo to be written</param>
/// <param name="o">The object the info belongs to.</param>
public static void WriteSingleProperty(BinaryWriter bw, PropertyInfo info, object o)
{
object value = o;
Type t = info.PropertyType;
if (t == typeof(String))
{
bw.Write(FillString((String)value, delimiter, CustomAttr.GetLength(info)).ToCharArray());
}
else if (t == typeof(bool))
{
bw.Write((bool)value);
}
else if (t == typeof(int))
{
bw.Write((int)value);
}
else if (t == typeof(DateTime))
{
char[] charArray = ((DateTime)value).ToString().ToCharArray();
bw.Write(charArray);
}
else if (t == typeof(long))
{
bw.Write((long)value);
}
else if (t == typeof(byte[]))
{
bw.Write((byte[])value);
}
//else if custom info
}
public static void MakeReferenceNull(Stream mainFile, PropertyInfo info, Type T, Dictionary <int, List <int> > toChange)
{
//ToChange:
//key = silinecek id
//list int = key'e eskiden referans eden kayıtlar
BaseClass trash = (BaseClass)Activator.CreateInstance(T);
int total = 0;
foreach (PropertyInfo orderedInfo in trash.OrderedInfos()) //sütun kaçıncı pozisyonda bul
{
if (orderedInfo.Name.Equals(info.Name)) //yazacağımız sütunu bulduk.
{
break;
}
else
{
if (trash.OTORelInfos().Contains(orderedInfo))
{
total += sizeof(int); //foreign key
}
else if (orderedInfo.PropertyType == typeof(Boolean))
{
total += 1; //marshal 4 döndürüyor, yanlışsın marshal.
//dosyaya yazarken booleanlar 1 yer kaplıyor.
}
else if (orderedInfo.PropertyType == typeof(String))
{
total += CustomAttr.GetLength(orderedInfo) + delimiter.Length;
}
else
{
total += System.Runtime.InteropServices.Marshal.SizeOf(orderedInfo.PropertyType);
}
}
}
BinaryWriter bw = new BinaryWriter(mainFile);
foreach (KeyValuePair <int, List <int> > kp in toChange)
{
foreach (int id in kp.Value)
{
bw.BaseStream.Position = (id - 1) * trash.RowSize() + total;
bw.Write(-1);
}
}
}
