public static void ResolveFkAttributes(Type foreignType, ColumnMeta fkColumn)
{
var foreignMeta = _metaCache.GetOrAdd(foreignType, AddMeta);
fkColumn.PrimaryTable = foreignMeta;
fkColumn.Template = "Lookup";
}
public void Add(ColumnMeta column)
{
Columns.Add(column);
}
private static TableMeta AddMeta(Type _type)
{
var tm = new TableMeta();
tm.Caption = _type.GetCustomAttribute <DisplayNameAttribute>();
tm.DisplayColumn = _type.GetCustomAttribute <DisplayColumnAttribute>();
tm.ActualTableName = _type.GetCustomAttribute <TableAttribute>()?.Name ?? _type.Name;
List <PropertyInfo> ShowColumns = new List <PropertyInfo>();
PropertyInfo[] columns = _type.GetProperties();
ColumnMeta actualMaster = null;
foreach (var col in columns)
{
var colMeta = new ColumnMeta(col);
tm.Add(colMeta);
}
var removeList = new List <ColumnMeta>();
foreach (var colMeta in tm.Columns)
{
var col = colMeta.Property;
var skipColumn = false;
foreach (var attr in col.GetCustomAttributes())
{
if (attr is KeyAttribute)
{
tm.PrimaryColumn = col;
}
else if (attr is DisplayAttribute)
{
colMeta.Display = attr as DisplayAttribute;
}
else if (attr is RequiredAttribute)
{
colMeta.Required = true;
}
else if (attr is NotMappedAttribute)
{
colMeta.NotMapped = true;
}
else if (attr is ReadOnlyAttribute)
{
colMeta.IsReadonly = true;
}
else if (attr is ForeignKeyAttribute)
{
var fkAttr = attr as ForeignKeyAttribute;
if (fkAttr != null)
{
// Ilgili kolonu bul
var fkCol = tm.Columns.First(c => c.Property.Name == (fkAttr as ForeignKeyAttribute).Name);
ResolveFkAttributes(col.PropertyType, fkCol);
// bu kolonu atla
skipColumn = true;
}
}
else if (attr is DataTypeAttribute)
{
colMeta.DataType = attr as DataTypeAttribute;
}
else if (attr is ScaffoldColumnAttribute)
{
colMeta.IsVisible = (attr as ScaffoldColumnAttribute).Scaffold;
}
else if (attr is UIHintAttribute)
{
colMeta.UIHint = (attr as UIHintAttribute);
}
else if (attr is UIAttribute)
{
var cpcn = (attr as UIAttribute).CascadeParentColumnName;
colMeta.ParentColumn = tm.Columns.First(c => c.Property.Name == cpcn);
if ((attr as UIAttribute).IsMaster)
{
actualMaster = colMeta;
}
}
}
if (skipColumn)
{
removeList.Add(colMeta);
continue;
}
colMeta.InnerType = Nullable.GetUnderlyingType(col.PropertyType);
if (colMeta.InnerType != null)
{
colMeta.Required = false;
}
else
{
colMeta.InnerType = col.PropertyType;
}
// Eğer enum varsa
if (colMeta.InnerType.IsEnum)
{
var names = Enum.GetNames(colMeta.InnerType).AsQueryable();
var values = Enum.GetValues(colMeta.InnerType).Cast <int>().AsQueryable();
colMeta.SetManualLookup(
names.Zip(values, (n, v) => new ListItem {
Id = Convert.ToInt32(v), Text = n
}).ToList()
);
}
// Datatype verilmemişse, anlamaya çalış.
if (colMeta.DataType == null)
{
DataType dt;
if (_type2dt.TryGetValue(colMeta.InnerType, out dt))
{
colMeta.DataType = new DataTypeAttribute(dt);
}
}
}
removeList.ForEach(c => tm.Columns.Remove(c));
// Order'a göre sırala.
tm.Columns.Sort(defaultComparer);
// Nesnenin bariz master ı varsa bul ve set et.
var fks = tm.Columns.Where(c => c.PrimaryTable != null).ToArray();
switch (fks.Length)
{
case 0:
break;
case 1:
tm.MasterFk = fks[0];
break;
default:
tm.MasterFk = actualMaster;
break;
}
if (!_metaCacheByName.ContainsKey(tm.ActualTableName))
{
_metaCacheByName.Add(tm.ActualTableName, tm);
}
return(tm);
}
