private static Func <object, object> GetConverter(PocoColumn pc, Type srcType, Type dstType)
{
if (srcType == dstType)
{
return(null);
}
// Standard DateTime->Utc mapper
if (pc != null && pc.ForceToUtc && srcType == ColumnType.DateTimeType && (dstType == ColumnType.DateTimeType || dstType == ColumnType.NullDateTimeType))
{
return(delegate(object src) { return new DateTime(((DateTime)src).Ticks, DateTimeKind.Utc); });
}
// unwrap nullable types
Type underlyingDstType = Nullable.GetUnderlyingType(dstType);
if (underlyingDstType != null)
{
dstType = underlyingDstType;
}
// Forced type conversion including integral types -> enum
if (dstType.IsEnum && IsIntegralType(srcType))
{
var backingDstType = Enum.GetUnderlyingType(dstType);
if (underlyingDstType != null)
{
// if dstType is Nullable<Enum>, convert to enum value
return(delegate(object src) { return Enum.ToObject(dstType, src); });
}
else if (srcType != backingDstType)
{
return(delegate(object src) { return Convert.ChangeType(src, backingDstType, null); });
}
}
else if (!dstType.IsAssignableFrom(srcType))
{
if (dstType.IsEnum && srcType == ColumnType.StringType)
{
return(delegate(object src) { return EnumMapper.EnumFromString(dstType, (string)src); });
}
else if (dstType == ColumnType.GuidType && srcType == ColumnType.StringType)
{
return(delegate(object src) { return Guid.Parse((string)src); });
}
else
{
return(delegate(object src) { return Convert.ChangeType(src, dstType, null); });
}
}
return(null);
}
private PocoColumn FromProperty(PropertyInfo pi)
{
if (pi.CanRead == false || pi.CanWrite == false)
{
return(null);
}
if (ColumnType.IsAllowType(pi.PropertyType) == false)
{
return(null);
}
var a = pi.GetCustomAttributes(typeof(IgnoreAttribute), true);
if (a.Length > 0)
{
return(null);
}
var ci = new PocoColumn();
ci.PropertyName = pi.Name;
var colAttrs = pi.GetCustomAttributes(typeof(ColumnAttribute), true);
if (colAttrs.Length > 0)
{
var colattr = (ColumnAttribute)colAttrs[0];
ci.ColumnName = colattr.Name == null ? pi.Name : colattr.Name;
ci.ForceToUtc = colattr.ForceToUtc;
if ((colattr as ResultColumnAttribute) != null)
{
ci.ResultColumn = true;
ci.ResultSql = (colattr as ResultColumnAttribute).Definition;
}
}
else
{
ci.ColumnName = pi.Name;
ci.ForceToUtc = false;
ci.ResultColumn = false;
}
ci.PropertyInfo = pi;
return(ci);
}