private static void RegisterDescription(Type entityType, EntityTypeDescription description)
{
if (!Descriptions.ContainsKey(entityType))
{
Descriptions.TryAdd(entityType, description);
}
}
private static void DescribeKeys(EntityTypeDescription typeDescription)
{
foreach (var column in typeDescription.Columns.Where(column => column.ColumnAttribute.IsPrimaryKey))
{
if (column.ColumnAttribute.IsDbGenerated)
{
typeDescription.IdentityKeys.Add(column);
}
else
{
typeDescription.CustomKeys.Add(column);
}
typeDescription.AllKeys.Add(column);
}
}
private static EntityTypeDescription CreateTypeDescription(Type entityType)
{
var result = new EntityTypeDescription
{
DbSetAttribute =
(DbSetAttribute)entityType.GetCustomAttributes(typeof(DbSetAttribute), false).SingleOrDefault()
};
var properties = entityType
.GetProperties(BindingFlags.Public | BindingFlags.Instance)
.Where(p => p.IsDefined(typeof(ColumnAttribute), false));
foreach (var property in properties)
{
var attribute = ((ColumnAttribute)(property.GetCustomAttributes(typeof(ColumnAttribute), false).Single()));
if (IsSimpleType(property.PropertyType))
{
result.Columns.Add(new EntityTypeDescription
{
IsSimpleColumn = true,
ColumnAttribute = attribute,
ColumnInfo = property
});
}
else if (IsSimpleNullableType(property.PropertyType))
{
result.Columns.Add(new EntityTypeDescription
{
IsNullableColumn = true,
IsSimpleColumn = true,
ColumnAttribute = attribute,
ColumnInfo = property
});
}
else if (IsArrayType(property.PropertyType))
{
result.Columns.Add(new EntityTypeDescription
{
IsArrayColumn = true,
ColumnAttribute = attribute,
ColumnInfo = property
});
}
else if (IsSupportedEnumerable(property.PropertyType))
{
result.Columns.Add(new EntityTypeDescription
{
IsEnumerableColumn = true,
ColumnAttribute = attribute,
ColumnInfo = property
});
}
else
{
var isNullableType = IsNullableType(property.PropertyType);
var complexColumn = isNullableType
? CreateTypeDescription(Nullable.GetUnderlyingType(property.PropertyType))
: CreateTypeDescription(property.PropertyType);
complexColumn.IsComplexColumn = true;
complexColumn.IsNullableColumn = isNullableType;
complexColumn.ColumnAttribute = attribute;
complexColumn.ColumnInfo = property;
result.Columns.Add(complexColumn);
}
}
DescribeKeys(result);
RegisterDescription(entityType, result);
return(result);
}